| Standard dosage | Shingles: 500 mg orally every 8 h for 7–10 days. Dosage needs to be adjusted in patients with renal insufficiency. |
| Contraindications | Hypersensitivity to the drug. |
| Major drug interactions | None. |
| Major side effects | Headaches (10–40 %), dysmenorrhea (1–8 %), erythema multiforme (rare) |
| Special points | Famciclovir is a prodrug that gets metabolized to penciclovir which is the active form of the drug. |
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