herb · for sunburn & sun sensitivity
Fernblock
A fern extract taken by mouth, sold for sun protection. Studied mainly for how much UV it takes to burn the skin.
How strong is the research?
Not verified evidence
50 healthy volunteers took Polypodium leucotomos, sold as Heliocare Advanced, or nicotinamide for 30 days. With both, it took about 26% more UVA light to redden the skin. Neither reduced UVA damage to DNA.
Studies disagree
5 papers read, 4 supporting, 1 against.
We found 5 studies behind this. We have not finished reading them yet, so we are not ready to say either way.
How much to take
480 mg