Placeholder. There's a real, clinically-studied oral sunscreen pill backed by a JAMA Dermatology randomized controlled trial — biopsy-confirmed to reduce cellular UV damage — and almost no general consumer has heard of it.
What we've found so far: Heliocare's Fernblock (Polypodium leucotomos extract) is clinically studied to provide an SPF 3-7 equivalent for ~4 hours per dose, with biopsy-confirmed reductions in sunburn cells and UV-induced DNA damage markers.
Open research: Interview a dermatologist on appropriate/inappropriate use cases; find out why this hasn't broken into mainstream consumer awareness despite the clinical backing; check for newer 2025 oral-photoprotection research.