Hi, I have a terrible problem with burning feet. I have been to the foot doctor several times, and he has examined my feet and sent me for a peripheral neuropathy test, it was normal. I am not diabetic, in fact I have low sugar. I do have high blood pressure, and take metroprolol to control it. The burning feet are really painful, I would rate them at a 8 or 9. The other condition I have is an allergy to sulfa, where I get burning. I have changed my shampoo and soaps so that I do not use sulfa products. My question is: How can I find out if there is any sulfa in the perscription drugs that I am taking? I did load them on the website and entered the sulfa allergy, but I do not see where sulfa is listed.