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2D Structure
Also known as: 206361-99-1, Tmc114, Tmc-114, Prezista, Uic-94017, Tmc 114
Molecular Formula
C27H37N3O7S
Molecular Weight
547.7  g/mol
InChI Key
CJBJHOAVZSMMDJ-HEXNFIEUSA-N
FDA UNII
YO603Y8113

An HIV PROTEASE INHIBITOR that is used in the treatment of AIDS and HIV INFECTIONS. Due to the emergence of ANTIVIRAL DRUG RESISTANCE when used alone, it is administered in combination with other ANTI-HIV AGENTS.
Darunavir is a Protease Inhibitor. The mechanism of action of darunavir is as a HIV Protease Inhibitor, and Cytochrome P450 3A Inhibitor, and Cytochrome P450 2D6 Inhibitor.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
[(3aS,4R,6aR)-2,3,3a,4,5,6a-hexahydrofuro[2,3-b]furan-4-yl] N-[(2S,3R)-4-[(4-aminophenyl)sulfonyl-(2-methylpropyl)amino]-3-hydroxy-1-phenylbutan-2-yl]carbamate
2.1.2 InChI
InChI=1S/C27H37N3O7S/c1-18(2)15-30(38(33,34)21-10-8-20(28)9-11-21)16-24(31)23(14-19-6-4-3-5-7-19)29-27(32)37-25-17-36-26-22(25)12-13-35-26/h3-11,18,22-26,31H,12-17,28H2,1-2H3,(H,29,32)/t22-,23-,24+,25-,26+/m0/s1
2.1.3 InChI Key
CJBJHOAVZSMMDJ-HEXNFIEUSA-N
2.1.4 Canonical SMILES
CC(C)CN(CC(C(CC1=CC=CC=C1)NC(=O)OC2COC3C2CCO3)O)S(=O)(=O)C4=CC=C(C=C4)N
2.1.5 Isomeric SMILES
CC(C)CN(C[C@H]([C@H](CC1=CC=CC=C1)NC(=O)O[C@H]2CO[C@@H]3[C@H]2CCO3)O)S(=O)(=O)C4=CC=C(C=C4)N
2.2 Other Identifiers
2.2.1 UNII
YO603Y8113
2.3 Synonyms
2.3.1 MeSH Synonyms

1. 114, Tmc

2. Darunavir Ethanolate

3. Ethanolate, Darunavir

4. Prezista

5. Tmc 114

6. Tmc-114

7. Tmc114

8. Uic 94017

9. Uic-94017

10. Uic94017

2.3.2 Depositor-Supplied Synonyms

1. 206361-99-1

2. Tmc114

3. Tmc-114

4. Prezista

5. Uic-94017

6. Tmc 114

7. Darunavirum

8. Darunavirum [inn-latin]

9. Derunavir

10. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl ((2s,3r)-4-(4-amino-n-isobutylphenylsulfonamido)-3-hydroxy-1-phenylbutan-2-yl)carbamate

11. Uic 94017

12. Chembl1323

13. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl(1s,2r)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-hydroxypropylcarbamate

14. Chebi:367163

15. Tmc-41629

16. Yo603y8113

17. N-((1s,2r)-3-(((4-aminophenyl)sulfonyl)(2-methylpropyl)amino)-2-hydroxy-1-benzylpropyl)((1s,2r,5r)-4,6-dioxabicyclo(3.3.0)oct-2-yloxy)carboxamide

18. Darunavir [usan]

19. Ncgc00168773-01

20. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl [(2s,3r)-4-{[(4-aminophenyl)sulfonyl](2-methylpropyl)amino}-3-hydroxy-1-phenylbutan-2-yl]carbamate

21. (3r,3as,6ar)-tetrahydro-2h-furo[2,3-b]furan-3-yl (2s,3r)-4-(4-amino-n-isobutylphenylsulfonamido)-3-hydroxy-1-phenylbutan-2-ylcarbamate

22. (3r,3as,6ar)-tetrahydro-2h-furo[2,3-b]furan-3-yl (2s,3r)-4-(4-amino-n-neopentylphenylsulfonamido)-3-hydroxy-1-phenylbutan-2-ylcarbamate

23. [(s)-3-[(4-amino-benzenesulfonyl)-isobutyl-amino]-2-hydroxy-1-((r)-phenylmethyl)-propyl]-carbamic Acid (3r,3as,6ar)-(hexahydro-furo[2,3-b]furan-3-yl) Ester

24. {(1s,2r)-3-[(4-amino-benzenesulfonyl)-isobutyl-amino]-1-benzyl-2-hydroxy-propyl}-carbamic Acid (3r,3as,6ar)-(hexahydro-furo[2,3-b]furan-3-yl) Ester

25. Drv

26. Prezista(tm)

27. Darunavir [inn]

28. (3r,3as,6ar)-hexahydrofuro(2,3-b)furan-3-yl N-((1s,2r)-1-benzyl-2-hydroxy-3-(n1-isobutylsulfanilamido)propyl)carbamate

29. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl (2s,3r)-4-(4-amino-n-isobutylphenylsulfonamido)-3-hydroxy-1-phenylbutan-2-ylcarbamate

30. [(3as,4r,6ar)-2,3,3a,4,5,6a-hexahydrofuro[2,3-b]furan-4-yl] N-[(1s,2r)-3-[(4-aminophenyl)sulfonyl-isobutyl-amino]-1-benzyl-2-hydroxy-propyl]carbamate

31. Aids073035

32. [(3as,4r,6ar)-2,3,3a,4,5,6a-hexahydrofuro[2,3-b]furan-4-yl] N-[(2s,3r)-4-[(4-aminophenyl)sulfonyl-(2-methylpropyl)amino]-3-hydroxy-1-phenylbutan-2-yl]carbamate

33. Darunavir (usan/inn)

34. Darunavir [usan:inn:ban]

35. Prezista Naive

36. Unii-yo603y8113

37. Hsdb 7788

38. 2idw

39. 2ien

40. 3bvb

41. 3cyw

42. 3ekt

43. 3ggu

44. 3lzs

45. 3lzu

46. 3lzv

47. 3ogp

48. 3pwm

49. 3qoz

50. 3tkw

51. 3ttp

52. 4hla

53. Darunavir (drv)

54. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl N-((1s,2r)-1-benzyl-2-hydroxy-3-(n1-isobutylsulfanilamido)propyl)carbamate

55. Tmc41629

56. Mfcd09260006

57. Tmc 41629

58. Uic-96017

59. 2f8g

60. 2hs1

61. 2hs2

62. 3d1z

63. 3so9

64. 3t3c

65. 3u7s

66. 4ll3

67. Darunavir [mi]

68. Darunavir [hsdb]

69. Darunavir [vandf]

70. (-)-darunavir

71. Darunavir [mart.]

72. Drv & Aag

73. Drv & Hsa

74. Darunavir [who-dd]

75. Dsstox_cid_26779

76. Dsstox_rid_81898

77. Dsstox_gsid_46779

78. Darunavir [ema Epar]

79. Schembl118546

80. Amy373

81. Bdbm8125

82. Uic-940t

83. Darunavir & Human Serum Albumin

84. Darunavir [orange Book]

85. Darunavir, >=98% (hplc)

86. Dtxsid0046779

87. Gtpl11243

88. 2f80

89. 2f81

90. 3d20

91. 3s53

92. 3s54

93. Hms3715i13

94. (3r,3as,6ar)-hexahydrofuro(2,3-b)furan-3-yl ((2s,3r)-4-((4-amino-n-isobutylphenyl)sulfonamido)-3-hydroxy-1-phenylbutan-2-yl)carbamate

95. Ex-a4009

96. Zinc3955219

97. Tox21_112634

98. Darunavir & Alpha1-acid Glycoprotein

99. Mc-114

100. S5250

101. 206361-99-1 (free)

102. Akos015966592

103. Bcp9000587

104. Ccg-269991

105. Cs-0749

106. Db01264

107. Ks-1469

108. Ncgc00388284-07

109. Ncgc00388284-08

110. Ncgc00388284-12

111. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl N-((1s,2r)-1-benzyl-2-hydroxy-3-(n(1)-isobutylsulfanilamido)propyl)carbamate

112. Ac-26778

113. Carbamic Acid, [(1s,2r)-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]-, (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl Ester

114. Hy-17040

115. Bcp0726000058

116. Cas-206361-99-1

117. D03656

118. Ab01565837_02

119. 361d991

120. J-013483

121. Q3765251

122. 3-(4-amino-phenoxy)-pyrrolidine-1-carboxylicacidtert-butylester

123. ((1s,2r)-3-(((4-aminophenyl)sulfonyl)(2-methylpropyl)amino)-2-hydroxy-1-(phenylmethyl)propyl)-carbamic Acid (3r,3as,6ar)-hexahydrofurano(2,3-b)furan-3-yl Ester

124. ((1s,2r)-3-(((4-aminophenyl)sulfonyl)(2-methylpropyl)amino)-2-hydroxy-1-(phenylmethyl)propyl)-carbamic Acid (3r,3as,6ar)-hexahydrofuro(2,3-b)furan-3-yl Ester

125. (3r,3as,6ar)-hexahydrofuro(2,3-b)furan-3-yl ((1s,2r)-3-(((4-aminophenyl)sulfonyl)(isobutyl)amino)-1-benzyl-2-hydroxypropyl)carbamate

126. (3r,3as,6ar)-hexahydrofuro(2,3-b)furan-3-yl N-((1s,2r)-1-benzyl-2-hydroxy-3-(n(sup 1)-isobutylsulfanilamido)propyl)carbamate

127. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl N-[(1s,2r)-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]carbamate

128. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl N-[(2s,3r)-3-hydroxy-4-[n-(2-methylpropyl)(4-aminobenzene)sulfonamido]-1-phenylbutan-2-yl]carbamate

129. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl N-[(2s,3r)-4-[(4-aminobenzene)(2-methylpropyl)sulfonamido]-3-hydroxy-1-phenylbutan-2-yl]carbamate

130. (3r,3as,6ar)-hexahydrofuro[2,3-b]furan-3-yl((2s,3r)-4-(4-amino-n-isobutylphenylsulfonamido)-3-hydroxy-1-phenylbutan-2-yl)carbamate

131. [(3r,3as,6ar)-2,3,3a,4,5,6a-hexahydrofuro[5,4-b]furan-3-yl] N-[(2s,3r)-4-[(4-aminophenyl)sulfonyl-(2-methylpropyl)amino]-3-hydroxy-1-phenylbutan-2-yl]carbamate

132. Carbamic Acid, ((1s,2r)-3-(((4-aminophenyl)sulfonyl)(2-methylpropyl)amino)-2-hydroxy-1-(phenylmethyl)propyl)-, (3r,3as,6ar)-hexahydrofurano(2,3-b)furan-3-yl Ester

2.4 Create Date
2005-06-24
3 Chemical and Physical Properties
Molecular Weight 547.7 g/mol
Molecular Formula C27H37N3O7S
XLogP32.9
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count9
Rotatable Bond Count12
Exact Mass547.23522170 g/mol
Monoisotopic Mass547.23522170 g/mol
Topological Polar Surface Area149 Ų
Heavy Atom Count38
Formal Charge0
Complexity853
Isotope Atom Count0
Defined Atom Stereocenter Count5
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 4  
Drug NameDarunavir
PubMed HealthDarunavir (By mouth)
Drug ClassesAntiretroviral Agent
Drug LabelPREZISTA (darunavir) is an inhibitor of the human immunodeficiency virus (HIV-1) protease.PREZISTA (darunavir), in the form of darunavir ethanolate, has the following chemical name: [(1S,2R)-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydrox...
Active IngredientDarunavir
Dosage FormTablet
Routeoral
Strength300mg; 75mg; 150mg; 600mg; 400mg
Market StatusTentative Approval
CompanyMylan Pharms

2 of 4  
Drug NamePrezista
PubMed HealthDarunavir (By mouth)
Drug ClassesAntiretroviral Agent
Drug LabelPREZISTA (darunavir) is an inhibitor of the human immunodeficiency virus (HIV-1) protease.PREZISTA (darunavir), in the form of darunavir ethanolate, has the following chemical name: [(1S,2R)-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydrox...
Active IngredientDarunavir ethanolate
Dosage FormTablet; Suspension
RouteOral
Strengtheq 150mg base; eq 75mg base; eq 600mg base; eq 800mg base; eq 100mg base/ml
Market StatusPrescription
CompanyJanssen Prods

3 of 4  
Drug NameDarunavir
PubMed HealthDarunavir (By mouth)
Drug ClassesAntiretroviral Agent
Drug LabelPREZISTA (darunavir) is an inhibitor of the human immunodeficiency virus (HIV-1) protease.PREZISTA (darunavir), in the form of darunavir ethanolate, has the following chemical name: [(1S,2R)-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydrox...
Active IngredientDarunavir
Dosage FormTablet
Routeoral
Strength300mg; 75mg; 150mg; 600mg; 400mg
Market StatusTentative Approval
CompanyMylan Pharms

4 of 4  
Drug NamePrezista
PubMed HealthDarunavir (By mouth)
Drug ClassesAntiretroviral Agent
Drug LabelPREZISTA (darunavir) is an inhibitor of the human immunodeficiency virus (HIV-1) protease.PREZISTA (darunavir), in the form of darunavir ethanolate, has the following chemical name: [(1S,2R)-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydrox...
Active IngredientDarunavir ethanolate
Dosage FormTablet; Suspension
RouteOral
Strengtheq 150mg base; eq 75mg base; eq 600mg base; eq 800mg base; eq 100mg base/ml
Market StatusPrescription
CompanyJanssen Prods

4.2 Therapeutic Uses

Darunavir with low-dose ritonavir (ritonavir-boosted darunavir) is used in conjunction with other antiretroviral agents for the treatment of human immunodeficiency virus (HIV) infection in treatment-experienced (previously treated) adults, including those infected with HIV-1 strains resistant to multiple HIV protease inhibitors (PIs). This indication is based on surrogate marker data (plasma HIV-1 RNA levels, CD4+ T-cell counts) obtained from two 24-week controlled studies in treatment-experienced adults (previously treated with nucleoside reverse transcriptase inhibitors (NRTIs, nonnucleoside reverse transcriptase inhibitors (NNRTIs), and PIs) with evidence of HIV-1 replication despite ongoing antiretroviral therapy. The manufacturer advises that the following factors be considered when initiating ritonavir-boosted darunavir. Use of ritonavir-boosted darunavir should be guided by results of baseline genotypic and phenotypic viral resistance testing and the individual's prior antiretroviral treatment. Administration of ritonavir-boosted darunavir in conjunction with other active antiretroviral agents is associated with a greater likelihood of treatment response. /Use Included in US product label/

American Society of Health System Pharmacists; AHFS Drug Information 2009. Bethesda, MD. (2009), p. 646


Prezista is a human immunodeficiency virus (HIV-1) protease inhibitor indicated for the treatment of HIV infection in adult patients. Prezista is also indicated for the treatment of HIV infection in pediatric patients 6 years of age and older. Prezista must be co-administered with ritonavir and with other antiretroviral agents. /Use Included in US product label/

US Natl Inst Health; DailyMed. Current Medication Information for PREZISTA (darunavir ethanolate) tablet, film-coated (October 2009). Available from, as of February 17, 2010: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=darunavir


Safety and efficacy of darunavir/ritonavir and optimized background regimen in treatment-experienced patients (6-17 years) /was assessed in a/ forty-eight-week, open-label, two-part, phase II study. In part I, 44 patients were randomized (1: 1 ratio) to receive a body weight-adjusted, adult-equivalent dose (group A) or a 20-33% higher darunavir/ritonavir twice daily (b.i.d.) dose (group B). Pharmacokinetics, safety and efficacy were assessed following 2-week dosing (part I), which determined dosing for part II (evaluated 48-week safety and efficacy). In part I, both groups met the protocol-specified criteria for pharmacokinetics and showed favorable tolerability and efficacy. The following body-weight doses were selected: darunavir/ritonavir 375/50 mg b.i.d. (20-<30 kg), 450/60 mg b.i.d. (30-<40 kg) and 600/100 mg b.i.d. (> or =40 kg); these gave an AUC 24 hr, C0 hr and Cmax of 102, 114 and 112%, respectively, versus the corresponding mean adult pharmacokinetic parameter. In part II, 80 patients received darunavir/ritonavir (median age: 14 years, mean baseline HIV-1 RNA: 4.64 log(10)copies/ml). One patient (1%) discontinued (treatment-unrelated grade 3 anxiety). An abnormal mean baseline triglyceride level was normalized at 48 weeks (P < 0.01). At week 48, 65% had at least 1.0 log (10)HIV-1 RNA reduction; 59 and 48% achieved HIV-1 RNA less than 400 and less than 50 copies/mL, respectively (time-to-loss-of-virologic response). Mean age-adjusted weight z-score increased by 0.2 (P = 0.003). In treatment-experienced children and adolescents, darunavir/ritonavir showed comparable exposure to adults with appropriate dose selection, favorable safety and tolerability, improved body weight and significant virologic response. Darunavir/ritonavir is a valuable therapeutic option for this population.

PMID:19724191 Blanche S et al; AIDS 23 (15): 2005-13 (2009).


4.3 Drug Warning

Acute hepatitis has occurred in patients receiving ritonavir-boosted darunavir in clinical studies. Liver injury (in some cases fatal) has been reported during postmarketing surveillance; liver injury generally has occurred in patients with advanced HIV infection who were receiving multiple concomitant drugs, were coinfected with hepatitis B virus (HBV) or hepatitis C virus (HCV), and/or were developing immune reconstitution syndrome. Appropriate laboratory tests should be performed to evaluate hepatic function prior to initiating ritonavir-boosted darunavir and periodically during treatment. Increased AST/ALT monitoring should be considered, especially during the first several months of therapy, in patients with hepatitis, cirrhosis, or elevated transaminase values prior to therapy. Interruption or discontinuance of ritonavir-boosted darunavir should be considered in patients who develop manifestations suggestive of hepatic impairment (e.g., fatigue, anorexia, nausea, jaundice, dark urine, liver tenderness, hepatomegaly, clinically important increases in hepatic enzyme concentrations).

American Society of Health System Pharmacists; AHFS Drug Information 2009. Bethesda, MD. (2009), p. 647


The risks versus benefits of ritonavir-boosted darunavir have not been established in pediatric patients.

American Society of Health System Pharmacists; AHFS Drug Information 2009. Bethesda, MD. (2009), p. 646


Spontaneous bleeding has been reported in patients with hemophilia A or B receiving PIs; use caution in such patients. Increased hemostatic therapy (e.g., antihemophilic factor) may be needed.

American Society of Health System Pharmacists; AHFS Drug Information 2009. Bethesda, MD. (2009), p. 647


Darunavir contains a sulfonamide moiety, which may cause allergic-type reactions in certain susceptible individuals. Use darunavir with caution in patients with known hypersensitivity to sulfonamide-containing drugs.

American Society of Health System Pharmacists; AHFS Drug Information 2009. Bethesda, MD. (2009), p. 647


For more Drug Warnings (Complete) data for Darunavir (19 total), please visit the HSDB record page.


4.4 Drug Indication

Darunavir, co-administered with ritonavir, and with other antiretroviral agents, is indicated for the treatment of human immunodeficiency virus (HIV) in children age 3 or above and adults with HIV-1 infection.


FDA Label


PREZISTA, co administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of human immunodeficiency virus (HIV 1) infection in adult and paediatric patients from the age of 3 years and at least 15 kg body weight.

PREZISTA, co administered with cobicistat is indicated in combination with other antiretroviral medicinal products for the treatment of human immunodeficiency virus (HIV 1) infection in adults and adolescents (aged 12 years and older, weighing at least 40 kg).

In deciding to initiate treatment with PREZISTA co administered with cobicistat or low dose ritonavir, careful consideration should be given to the treatment history of the individual patient and the patterns of mutations associated with different agents. Genotypic or phenotypic testing (when available) and treatment history should guide the use of PREZISTA.

PREZISTA, co administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV 1) infection.

PREZISTA 75 mg, 150 mg, and 600 mg tablets may be used to provide suitable dose regimens:

- For the treatment of HIV 1 infection in antiretroviral treatment (ART) experienced adult patients, including those that have been highly pre treated.

- For the treatment of HIV 1 infection in paediatric patients from the age of 3 years and at least 15 kg body weight.

In deciding to initiate treatment with PREZISTA co administered with low dose ritonavir, careful consideration should be given to the treatment history of the individual patient and the patterns of mutations associated with different agents. Genotypic or phenotypic testing (when available) and treatment history should guide the use of PREZISTA.

PREZISTA, co administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV 1) infection.

PREZISTA, co administered with cobicistat is indicated in combination with other antiretroviral medicinal products for the treatment of human immunodeficiency virus (HIV 1) infection in adults and adolescents (aged 12 years and older, weighing at least 40 kg).

PREZISTA 400 mg and 800 mg tablets may be used to provide suitable dose regimens for the treatment of HIV 1 infection in adult and paediatric patients from the age of 3 years and at least 40 kg body weight who are:

- antiretroviral therapy (ART) nave.

- ART experienced with no darunavir resistance associated mutations (DRV RAMs) and who have plasma HIV 1 RNA < 100,000 copies/ml and CD4+ cell count 100 cells x 106/L. In deciding to initiate treatment with PREZISTA in such ART experienced patients, genotypic testing should guide the use of PREZISTA.


* 400mg and 800 mg Film-coated Tablets:

Darunavir Krka d. d. , co-administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV-1) infection.

Darunavir Krka d. d. , co-administered with cobicistat is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV-1) infection in adult patients (see section 4. 2).

Darunavir Krka d. d. 400 mg and 800 mg tablets may be used to provide suitable dose regimens for the treatment of HIV-1 infection in adult and paediatric patients from the age of 3 years and at least 40 kg body weight who are:

- antiretroviral therapy (ART)-nave (see section 4. 2).

- ART-experienced with no darunavir resistance associated mutations (DRV-RAMs) and who have plasma HIV-1 RNA < 100,000 copies/ml and CD4+ cell count 100 cells x 106/l. In deciding to initiate treatment with darunavir in such ART-experienced patients, genotypic testing should guide the use of darunavir (see sections 4. 2, 4. 3, 4. 4 and 5. 1).

* 600mg Film-coated Tablets:

Darunavir Krka d. d. , co-administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV-1) infection.

Darunavir Krka d. d. 600 mg tablets may be used to provide suitable dose regimens (see section 4. 2):

- For the treatment of HIV-1 infection in antiretroviral treatment (ART)-experienced adult patients, including those that have been highly pre-treated.

- For the treatment of HIV-1 infection in paediatric patients from the age of 3 years and at least 15 kg body weight.

In deciding to initiate treatment with darunavir co-administered with low dose ritonavir, careful consideration should be given to the treatment history of the individual patient and the patterns of mutations associated with different agents. Genotypic or phenotypic testing (when available) and treatment history should guide the use of darunavir.


* 400 and 800 mg:

Darunavir Krka, co-administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV-1) infection.

Darunavir Krka 400 mg and 800 mg tablets may be used to provide suitable dose regimens for the treatment of HIV-1 infection in adult and paediatric patients from the age of 3 years and at least 40 kg body weight who are:

- antiretroviral therapy (ART)-nave (see section 4. 2).

- ART-experienced with no darunavir resistance associated mutations (DRV-RAMs) and who have plasma HIV-1 RNA < 100,000 copies/ml and CD4+ cell count 100 cells x 106/l. In deciding to initiate treatment with darunavir in such ART-experienced patients, genotypic testing should guide the use of darunavir (see sections 4. 2, 4. 3, 4. 4 and 5. 1).

* 600 mg:

Darunavir Krka, co-administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV-1) infection.

Darunavir Krka 600 mg tablets may be used to provide suitable dose regimens (see section 4. 2):

- For the treatment of HIV-1 infection in antiretroviral treatment (ART)-experienced adult patients, including those that have been highly pre-treated.

- For the treatment of HIV-1 infection in paediatric patients from the age of 3 years and at least 15 kg body weight.

In deciding to initiate treatment with darunavir co-administered with low dose ritonavir, careful consideration should be given to the treatment history of the individual patient and the patterns of mutations associated with different agents. Genotypic or phenotypic testing (when available) and treatment history should guide the use of darunavir.


Darunavir, co-administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV-1) infection (see section 4. 2).

Darunavir Mylan 75 mg, 150 mg, 300 mg and 600 mg tablets may be used to provide suitable dose regimens (see section 4. 2):

- For the treatment of HIV-1 infection in antiretroviral treatment (ART)-experienced adult patients, including those that have been highly pre-treated.

- For the treatment of HIV-1 infection in paediatric patients from the age of 3 years and at least 15 kg body weight.

In deciding to initiate treatment with darunavir co-administered with low dose ritonavir, careful consideration should be given to the treatment history of the individual patient and the patterns of mutations associated with different agents. Genotypic or phenotypic testing (when available) and treatment history should guide the use of darunavir (see sections 4. 2, 4. 4 and 5. 1).

Darunavir co-administered with low dose ritonavir is indicated in combination with other antiretroviral medicinal products for the treatment of patients with human immunodeficiency virus (HIV-1) infection.

Darunavir co-administered with cobicistat is indicated in combination with other antiretroviral medicinal products for the treatment of human immunodeficiency virus (HIV-1) infection in adults and adolescents (aged 12 years and older, weighing at least 40 kg) (see section 4. 2).

Darunavir Mylan 400 mg and 800 mg tablets may be used to provide suitable dose regimens for the treatment of HIV-1 infection in adult and paediatric patients from the age of 3 years and at least 40 kg body weight who are:

- antiretroviral therapy (ART)-nave (see section 4. 2).

- ART-experienced with no darunavir resistance associated mutations (DRV-RAMs) and who have plasma HIV-1 RNA < 100,000 copies/ml and CD4+ cell count 100 cells x 10/L. In deciding to initiate treatment with darunavir in such ART-experienced patients, genotypic testing should guide the use of darunavir (see sections 4. 2, 4. 3, 4. 4 and 5. 1).


Treatment of human immunodeficiency virus (HIV-1) infection


5 Pharmacology and Biochemistry
5.1 Pharmacology

Darunavir is an inhibitor of the human immunodeficiency virus (HIV) protease, which prevents HIV viral replication. When administered with ritonavir in combination antiretroviral therapy, darunavir significantly decreases viral load and increases CD4 cell counts, decreasing the morbidity and mortality of HIV infection.


5.2 MeSH Pharmacological Classification

HIV Protease Inhibitors

Inhibitors of HIV PROTEASE, an enzyme required for production of proteins needed for viral assembly. (See all compounds classified as HIV Protease Inhibitors.)


5.3 FDA Pharmacological Classification
5.3.1 Active Moiety
DARUNAVIR
5.3.2 FDA UNII
YO603Y8113
5.3.3 Pharmacological Classes
Cytochrome P450 3A Inhibitors [MoA]; HIV Protease Inhibitors [MoA]; Protease Inhibitor [EPC]; Cytochrome P450 2D6 Inhibitors [MoA]
5.4 ATC Code

J05AE10


J05AE10


J05AE10


J05AE10


J - Antiinfectives for systemic use

J05 - Antivirals for systemic use

J05A - Direct acting antivirals

J05AE - Protease inhibitors

J05AE10 - Darunavir


5.5 Absorption, Distribution and Excretion

Absorption

The absolute oral bioavailability of one single 600 mg dose of darunavir alone and with 100 mg of ritonavir twice a day was 37% and 82%, respectively. Exposure to darunavir in boosted patients has been found to be 11 times higher than in unboosted patients. Tmax is achieved approximately 2.4 to 4 hours after oral administration. When darunavir is taken with food, the Cmax and AUC of darunavir given with ritonavir increase by 30% when compared to the fasted state.


Route of Elimination

A mass balance study in healthy volunteers demonstrated that after single dose administration of 400 mg 14C-darunavir, given with 100 mg ritonavir, approximately 79.5% and 13.9% of the administered dose of radiolabeled darunavir was obtained in the feces and urine, respectively. Excretion of unchanged drug accounted for 8.0% of the darunavir dose in volunteers who were unboosted. In boosted darunavir administration, unchanged darunavir made up 48.8% of the excreted dose in boosted subjects due to inhibition of darunavir metabolism by ritonavir. Unchanged drug in the urine made up 1.2% of the administered dose in volunteers who where unboosted, and 7.7% in boosted volunteers.


Volume of Distribution

The volume of distribution of darunavir in one pharmacokinetic study in conjunction with ritonavir was 206.5 L (with a range of 161.0264.9) in healthy young adult volunteers. Another pharmacokinetic study revealed a volume of distribution of 220 L.


Clearance

Darunavir has a low renal clearance. After intravenous administration, the clearance darunavir administered alone and with 100 mg ritonavir twice daily, was 32.8 L/h and 5.9 L/h, respectively.


Darunavir is approximately 95% bound to plasma proteins. Darunavir binds primarily to plasma alpha 1-acid glycoprotein (AAG).

US Natl Inst Health; DailyMed. Current Medication Information for PREZISTA (darunavir ethanolate) tablet, film-coated (October 2009). Available from, as of February 17, 2010: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=darunavir


Darunavir, co-administered with 100 mg ritonavir twice daily, was absorbed following oral administration with a Tmax of approximately 2.5-4 hours. The absolute oral bioavailability of a single 600 mg dose of darunavir alone and after co-administration with 100 mg ritonavir twice daily was 37% and 82%, respectively.

US Natl Inst Health; DailyMed. Current Medication Information for PREZISTA (darunavir ethanolate) tablet, film-coated (October 2009). Available from, as of February 17, 2010: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=darunavir


Darunavir is distributed into milk in rats; not known whether the drug is distributed into human milk.

American Society of Health System Pharmacists; AHFS Drug Information 2009. Bethesda, MD. (2009), p. 647


A mass balance study in healthy volunteers showed that after single dose administration of 400 mg (14)C-darunavir, co-administered with 100 mg ritonavir, approximately 79.5% and 13.9% of the administered dose of (14)C-darunavir was recovered in the feces and urine, respectively. Unchanged darunavir accounted for approximately 41.2% and 7.7% of the administered dose in feces and urine, respectively. The terminal elimination half-life of darunavir was approximately 15 hours when co-administered with ritonavir. After intravenous administration, the clearance of darunavir, administered alone and co-administered with 100 mg twice daily ritonavir, was 32.8 L/hr and 5.9 L/hr, respectively.

US Natl Inst Health; DailyMed. Current Medication Information for PREZISTA (darunavir ethanolate) tablet, film-coated (October 2009). Available from, as of February 17, 2010: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=darunavir


For more Absorption, Distribution and Excretion (Complete) data for Darunavir (8 total), please visit the HSDB record page.


5.6 Metabolism/Metabolites

Darunavir is heavily oxidized and metabolized by hepatic cytochrome enzymes, mainly CYP3A. Darunavir is extensively metabolized in subjects who do not receive a booster, primarily via carbamate hydrolysis, isobutyl aliphatic hydroxylation, and aniline aromatic hydroxylation, as well as both benzylic aromatic hydroxylation and glucuronidation.


In vitro experiments with human liver microsomes (HLMs) indicate that darunavir primarily undergoes oxidative metabolism. Darunavir is extensively metabolized by CYP enzymes, primarily by CYP3A. A mass balance study in healthy volunteers showed that after a single dose administration of 400 mg (14)C-darunavir, co-administered with 100 mg ritonavir, the majority of the radioactivity in the plasma was due to darunavir. At least 3 oxidative metabolites of darunavir have been identified in humans; all showed activity that was at least 90% less than the activity of darunavir against wild-type HIV.

US Natl Inst Health; DailyMed. Current Medication Information for PREZISTA (darunavir ethanolate) tablet, film-coated (October 2009). Available from, as of February 17, 2010: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=darunavir


Absorption, metabolism, and excretion of darunavir, an inhibitor of human immunodeficiency virus protease, was studied in eight healthy male subjects after a single oral dose of 400 mg of ((14)C)darunavir given alone (unboosted subjects) or with ritonavir (100 mg b.i.d. 2 days before and 7 days after darunavir administration (boosted subjects)). ... Darunavir was extensively metabolized in unboosted subjects, mainly by carbamate hydrolysis, isobutyl aliphatic hydroxylation, and aniline aromatic hydroxylation and to a lesser extent by benzylic aromatic hydroxylation and glucuronidation. Total excretion of unchanged darunavir accounted for 8.0% of the dose in unboosted subjects. Boosting with ritonavir resulted in significant inhibition of carbamate hydrolysis, isobutyl aliphatic hydroxylation, and aniline aromatic hydroxylation but had no effect on aromatic hydroxylation at the benzylic moiety, whereas excretion of glucuronide metabolites was markedly increased but still represented a minor pathway. Total excretion of unchanged darunavir accounted for 48.8% of the administered dose in boosted subjects as a result of the inhibition of darunavir metabolism by ritonavir. Unchanged darunavir in urine accounted for 1.2% of the administered dose in unboosted subjects and 7.7% in boosted subjects, indicating a low renal clearance.

PMID:19131522 Vermeir M et al; Drug Metab Dispos 37 (4): 809-20 (2009).


Darunavir is metabolized by Phase I and Phase II biotransformation mechanisms. A large number of metabolites were detected in vitro using animal and human hepatocytes and microsomal preparations. The metabolic pathway was qualitatively similar in rats, dogs and humans. The most prevalent pathway was the Phase I biotransformation including carbamate hydrolysis, aliphatic hydroxylation at the isobutyl moiety and aromatic hydroxylation at the aniline moiety. Dogs were most representatives of human with carbamate hydrolysis predominating in both species. Darunavir was mainly metabolized by CYP3A. In mice and rats darunavir treatment induced hepatic microsomal CYP3A4. UDP-GT activity was additionally induced in rats. In dogs, no induction effects were observed. Darunavir is presented as a single enantiomer but no chiral inversion occurs in vivo.

European Medicines Agency (EMEA), Committee for Medicinal Products for Human Use; European Public Assessment Report (EPAR) (Scientific Discussion); PREZISTA (darunavir) (May 2009). Available from, as of February 18, 2010: https://www.ema.europa.eu/humandocs/PDFs/EPAR/prezista/0770707en6.pdf


5.7 Biological Half-Life

The terminal elimination half-life of darunavir is approximately 15 hours when it is combined with ritonavir.


A mass balance study in healthy volunteers showed that after a single dose administration of 400 mg (14)C-darunavir, co-administered with 100 mg ritonavir ... The terminal elimination half-life of darunavir was approximately 15 hours when co-administered with ritonavir.

US Natl Inst Health; DailyMed. Current Medication Information for PREZISTA (darunavir ethanolate) tablet, film-coated (October 2009). Available from, as of February 17, 2010: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=darunavir


The pharmacokinetics of darunavir has been evaluated in vitro and in several species (mice, rats, dogs and rabbits), that were also used in the non-clinical pharmacology and toxicology studies. ... Following oral administration, ... elimination half-life was ... rapid with half-lives generally less than 5 hr.

European Medicines Agency (EMEA), Committee for Medicinal Products for Human Use; European Public Assessment Report (EPAR) (Scientific Discussion); PREZISTA (darunavir) (May 2009). Available from, as of February 18, 2010: https://www.ema.europa.eu/humandocs/PDFs/EPAR/prezista/0770707en6.pdf


5.8 Mechanism of Action

The HIV-1 protease enzyme is necessary for viral precursor protein processing and viral maturation in preparation for infection, and is therefore a target for antiretroviral therapy for HIV. Protease inhibitors are used as a part of highly active antiretroviral therapy (HAART) in patients diagnosed with HIV infection. It has been shown to effectively suppress the virus, leading to significantly decreased morbidity and mortality rates. Darunavir, a HIV protease inhibitor, prevents HIV replication through binding to the enzyme, stopping the dimerization and the catalytic activity of HIV-1 protease. In particular, it inhibits the cleavage of HIV encoded Gag-Pol proteins in cells that have been infected with the virus, halting the formation of mature virus particles, which spread the infection. The close contact that darunavir makes with the primary chains of the active site amino acids (Asp-29 and Asp-30) on the protease likely contributes to its potency and efficacy against resistant variants of HIV-1. Darunavir is known to bind to different sites on the enzyme: the active site cavity and the surface of one of the flexible flaps in the protease dimer. Darunavir can adapt to changes in the shape of a protease enzyme due to its molecular flexibility.


Darunavir as a protease inhibitor inhibits the cleavage of HIV encoded gag-pol polyproteins in virus infected cells, thereby preventing the formation of mature and infectious new virions. It was selected for its potency against wild type HIV-1 and HIV strains resistant to currently approved protease inhibitors.

European Medicines Agency (EMEA), Committee for Medicinal Products for Human Use; European Public Assessment Report (EPAR) (Scientific Discussion); PREZISTA (darunavir) (May 2009). Available from, as of February 18, 2010: https://www.ema.europa.eu/humandocs/PDFs/EPAR/prezista/0770707en6.pdf


Darunavir is an inhibitor of the HIV-1 protease. It selectively inhibits the cleavage of HIV encoded Gag-Pol polyproteins in infected cells, thereby preventing the formation of mature virus particles.

US Natl Inst Health; DailyMed. Current Medication Information for PREZISTA (darunavir ethanolate) tablet, film-coated (October 2009). Available from, as of February 17, 2010: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=darunavir