I have got a swollen gum, swollen bump on underarm, swollen paining big toe and a few red rash like bumps all on the left side of my body and itching all over body  after taking glutathione for 3 days. I am sulphur intolerant and get very bad rashes if I am exposed to pure sulphur in any form. I am wondering if this is the sign of an allergic reaction starting. If so, is there any way to stop it from spreading all over my body? If I take benadryl or allegra, will it stop the spreading of rash or not? Can I use caladryl on current red spots?