Thought this might be of interest to people here as we get into summery insect-season in the Northern Hemisphere. I've always been prone to large welts from bites. I was out in my garden yesterday and got a number of bites, all of which swelled up - not so terribly badly as when my health was poor, but it was still an immediate, noticeable reaction. I hadn't yet scratched to exacerbate the bites either. I happened to take a handful of supplements with food just afterwards - 100,000 IU vit A, b vitamins, n-acetyl cysteine, and cat's claw - and a couple of hours later I noticed the reaction had just disappeared. Not a typical progression for me. It's hard to say which one was the decisive supplement but I am guessing vitamin A. It makes sense that supplements could help as it is a histamine/inflammatory reaction. This makes me suspect that there actually aren't people who are bitten by mosquitos more or less, which many claim, but actually people who are more or less susceptible to reactions based on their health status.