I am glad you brought this question, it is a very good one and I can tell you one thing that our old and wise family doctor taught us - if your body reacts to any food, drug or supplement - you should not take it...
I used to react to almost anything, when I had candida, anything! I couldn't leave the house without getting reaction to the subway, to the trees, to...just about anything. I learned later that most supplements have toxic fillers or animals by products which means Antibiotics and other hormones...
My suggestion to you is to do a good Colon Cleanse to get all the toxins out of your body and then take vegan probiotics, the ones that are used to kill candida.