The approved dose of ribavirin when used with Pegasys is 1,000-1,200 mg (5-6
tablets) daily, split into a morning
dose (2-3
tablets) and an evening
dose (3
tablets). The actual dose is based on body weight: people who weigh less than 165 lbs. take 1,000 mg daily, and people who weigh 165 lbs. or more take 1,200 mg daily. People with genotype 2 or 3 only need 800 mg daily, split into a morning dose (2 tablets) and an evening dose (2 tablets), regardless of weight.