SPL Set ID: efe37bd1-a236-43cc-828c-b57e8a704d67
1 drug(s) with this SPL Set ID
Valacyclovir hydrochloride,USP is the hydrochloride salt of the L -valyl ester of the antiviral drug acyclovir. Valacyclovir tablets, USP are for oral administration. Each tablet contains valacyclovir hydrochloride equivalent to 500 mg or 1 gram valacyclovir and the inactive ingredients crospovidone, FD&C Blue No. 2, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80 and titanium dioxide. The chemical name of valacyclovir hydrochloride is L -valine, 2-[(2-amino-1,6-dihydro-6-oxo-9 H -purin-9-yl)methoxy]ethyl ester, monohydrochloride. It has the following structural formula: Valacyclovir hydrochloride is a white to off-white powder with the molecular formula C 13 H 20 N 6 O 4 •HCl and a molecular weight of 360.80. The maximum solubility in water at 25°C is 174 mg/mL. The pK a s for valacyclovir hydrochloride are 1.90, 7.47, and 9.43. Structure