Fosamprenavir description: Difference between revisions

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==Description==


LEXIVA (fosamprenavir calcium) is a prodrug of [[amprenavir]], an inhibitor of HIV protease. The chemical name of fosamprenavir calcium is (3S)-tetrahydrofuran-3-yl (1S,2R)-3-[[(4-aminophenyl) sulfonyl](isobutyl)amino]-1-benzyl-2-(phosphonooxy) propylcarbamate monocalcium salt. Fosamprenavir calcium is a single stereoisomer with the (3S)(1S,2R) configuration. It has a molecular formula of C25H34CaN3O9PS and a molecular weight of 623.7. It has the following structural formula:


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Fosamprenavir calcium is a white to cream-colored solid with a solubility of approximately 0.31 mg per mL in water at 25°C.


<ref>{{Cite web  | last =  | first =  | title = LEXIVA (FOSAMPRENAVIR CALCIUM) TABLET, FILM COATED LEXIVA (FOSAMPRENAVIR CALCIUM) SUSPENSION [VIIV HEALTHCARE COMPANY] | url = http://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=24feb9be-32a6-45fd-a896-f3e202edd8a9 | publisher =  | date =  | accessdate =  }}</ref>
LEXIVA Tablets are available for oral administration in a strength of 700 mg of fosamprenavir as fosamprenavir calcium (equivalent to approximately 600 mg of amprenavir). Each 700 mg tablet contains the inactive ingredients colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, microcrystalline cellulose, and povidone K30. The tablet film-coating contains the inactive ingredients hypromellose, iron oxide red, titanium dioxide, and triacetin.


LEXIVA Oral Suspension is available in a strength of 50 mg per mL of fosamprenavir as fosamprenavir calcium equivalent to approximately 43 mg of amprenavir. LEXIVA Oral Suspension is a white to off-white suspension with a grape-bubblegum-peppermint flavor. Each one milliliter (1 mL) contains the inactive ingredients artificial grape-bubblegum flavor, calcium chloride dihydrate, hypromellose, methylparaben, natural peppermint flavor, polysorbate 80, propylene glycol, propylparaben, purified water, and sucralose.<ref>{{Cite web  | last =  | first =  | title = LEXIVA (FOSAMPRENAVIR CALCIUM) TABLET, FILM COATED LEXIVA (FOSAMPRENAVIR CALCIUM) SUSPENSION [VIIV HEALTHCARE COMPANY] | url = http://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=24feb9be-32a6-45fd-a896-f3e202edd8a9 | publisher =  | date =  | accessdate =  }}</ref>


==References==
==References==

Latest revision as of 19:05, 5 January 2014

Fosamprenavir
LEXIVA® FDA Package Insert
Description
Clinical Pharmacology
Microbiology
Indications and Usage
Contraindications
Warnings and Precautions
Adverse Reactions
Drug Interactions
Overdosage
Clinical Studies
Dosage and Administration
How Supplied
Labels and Packages

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmed Zaghw, M.D. [2]

Description

LEXIVA (fosamprenavir calcium) is a prodrug of amprenavir, an inhibitor of HIV protease. The chemical name of fosamprenavir calcium is (3S)-tetrahydrofuran-3-yl (1S,2R)-3-[[(4-aminophenyl) sulfonyl](isobutyl)amino]-1-benzyl-2-(phosphonooxy) propylcarbamate monocalcium salt. Fosamprenavir calcium is a single stereoisomer with the (3S)(1S,2R) configuration. It has a molecular formula of C25H34CaN3O9PS and a molecular weight of 623.7. It has the following structural formula:

Fosamprenavir calcium is a white to cream-colored solid with a solubility of approximately 0.31 mg per mL in water at 25°C.

LEXIVA Tablets are available for oral administration in a strength of 700 mg of fosamprenavir as fosamprenavir calcium (equivalent to approximately 600 mg of amprenavir). Each 700 mg tablet contains the inactive ingredients colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, microcrystalline cellulose, and povidone K30. The tablet film-coating contains the inactive ingredients hypromellose, iron oxide red, titanium dioxide, and triacetin.

LEXIVA Oral Suspension is available in a strength of 50 mg per mL of fosamprenavir as fosamprenavir calcium equivalent to approximately 43 mg of amprenavir. LEXIVA Oral Suspension is a white to off-white suspension with a grape-bubblegum-peppermint flavor. Each one milliliter (1 mL) contains the inactive ingredients artificial grape-bubblegum flavor, calcium chloride dihydrate, hypromellose, methylparaben, natural peppermint flavor, polysorbate 80, propylene glycol, propylparaben, purified water, and sucralose.[1]

References

  1. "LEXIVA (FOSAMPRENAVIR CALCIUM) TABLET, FILM COATED LEXIVA (FOSAMPRENAVIR CALCIUM) SUSPENSION [VIIV HEALTHCARE COMPANY]".

Adapted from the FDA Package Insert.