2025 Trial: Polypodium + Red Orange Cut UVB Redness 46%
A 2025 clinical trial gives the 'sunscreen pill' real numbers — but dermatologists are clear it supplements, never replaces, topical SPF.
A randomized, double-blind, placebo-controlled trial published in Nutrients on April 2, 2025 (2025;17(7):1240) found 8 weeks of oral red orange and Polypodium leucotomos extracts produced a 23.8% increase in minimal erythema dose and a 46.2% reduction in UVB-induced erythema intensity vs. placebo (p < 0.0001).
Dermatologists note that while oral antioxidants like Polypodium leucotomos can measurably raise the skin's sunburn threshold, the effect is partial — they recommend such supplements only as an add-on to broad-spectrum topical sunscreen, never as a substitute.
Questions we get a lot
Do sunscreen pills actually work?
The 2025 Nutrients trial found a measurable effect: 8 weeks of oral Polypodium leucotomos plus red orange extract raised the minimal erythema dose by 23.8% and cut UVB-induced redness by 46.2% versus placebo. So they have a real, statistically significant effect — but it's partial protection, not full coverage.
Can a sunscreen pill replace my topical SPF?
No. Even with the positive 2025 trial results, the increase in sunburn threshold is modest and varies by person. Oral photoprotection is best understood as a complement to — not a replacement for — broad-spectrum topical sunscreen applied generously and reapplied.
r/SkincareAddiction: 'Do sunscreen pills actually work, or is it just expensive pee?'