Heartburn drug could ease painful sun sensitivity
Disease control
Completed
This Phase 2 trial tested whether oral cimetidine (Tagamet), a common heartburn drug, can reduce light sensitivity in people with erythropoietic protoporphyria (EPP) and X-linked protoporphyria (XLP). These genetic conditions cause severe pain from sunlight exposure. The study en…
Phase: PHASE2 • Sponsor: Amy K. Dickey, M.D. • Aim: Disease control
Last updated Jul 01, 2026 00:00 UTC