Answer
The tablet core of Valtrex (valaciclovir hydrochloride) 500 mg tablets contains microcrystalline cellulose, crospovidone, povidone, magnesium stearate and silica colloidal anhydrous.
Sources for this answer
- Valtrex Tablets 500mgGlaxoSmithKline UK · emc · SmPC §6.1 List of excipients · Version 32Document updated
Sources checked