Incivek (telaprevir) Drug Information: Description, User Reviews, Drug Side Effects, Interactions

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May 27, 2012

Incivek

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Hepatitis C infection facts

HCV is one of several viruses that cause hepatitis (inflammation of the liver).
Up to 85% of individuals who are initially (acutely) infected with HCV will fail to eliminate the virus and will become chronically infected.
HCV is spread most commonly through inadvertent exposure to infected blood. Intravenous drug abuse is the most common mode of transmission. The risk of acquiring HCV through sexual contact is low.
Generally, patients do not develop symptoms of chronic infection with HCV until they have extensive scarring of the liver (cirrhosis). Some individuals, however, may have fatigue and other non-specific symptoms in the absence of cirrhosis. A minority of patients with HCV have symptoms from organs outside of the liver.
In the U.S., Infection with HCV is the most common cause of chronic hepatitis and the most common reason for liver transplantation.
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INCIVEK™
(telaprevir)

DRUG DESCRIPTION

INCIVEK (telaprevir) is an inhibitor of the HCV NS3/4A protease.

The IUPAC name for telaprevir is (1S,3aR,6aS)-2-[(2S)-2-({(2S)-2-cyclohexyl-2-[(pyrazin-2-ylcarbonyl)amino]acetyl}amino)-3,3-dimethylbutanoyl]-N-[(3S)-1(cyclopropylamino)-1,2-dioxohexan-3-yl]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-1-carboxamide. Its molecular formula is C₃₆H₅₃N₇O₆ and its molecular weight is 679.85. Telaprevir has the following structural formula:

INCIVEK™ (telaprevir) Structural Formula Illustration

Telaprevir drug substance is a white to off-white powder with a solubility in water of 0.0047 mg/mL.

Telaprevir interconverts to an R-diastereomer, VRT-127394, which is the major metabolite in plasma and is approximately 30-fold less potent than telaprevir. INCIVEK is available as a purple, capsule-shaped, film-coated tablet for oral administration containing 375 mg of telaprevir. Each tablet contains the inactive ingredients colloidal silicon dioxide, croscarmellose sodium, D&C Red No. 40, dibasic calcium phosphate (anhydrous), FD&C Blue No. 2, hypromellose acetate succinate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, sodium lauryl sulfate, sodium stearyl fumarate, talc, and titanium dioxide.

Last reviewed on RxList: 4/2/2012
This monograph has been modified to include the generic and brand name in many instances.