This can be from being outdoors and in the heat too long on a hot day, and there are reports of problems from sauna or hot steam bath exposure
Jung BG, Lee KO, Lee SS, Chi YH, Jang HH, Kang SS (2002) A Chinese cabbage cDNA with high sequence identity to phospholipid hydroperoxide glutathione peroxidases encodes a novel isoform of thioredoxin-dependent peroxidase
In fact, I've had many people that have done that exact same thing
Percent Daily Values are based on a 2,000 calorie diet
The expression of riboflavin transporters in human colorectal cancer
On top of that, TB-500 promotes angiogenesis (the formation of new blood vessels) which improves blood flow to injured areas, delivering the oxygen and nutrients needed for faster healing