Karlin, what great news after all that pain and discomfort!
I 'googled' BIOTIN, the thing is how did you fall into this discovery?
It's a good job you listen to your body my friend or goodness knows what. Below I found these natural foods but I guess you already know of them, besides that your discovery after all that time was well worth the wait.
I wondered about that farting of yours (lol), could it possibly be caused by the YEAST in BIOTIN,just a thought?
I guess that we all suffer some side effects when we consume something alien to our body, I know I do, lol.
Great to hear Kevin, really great!

(((Biotin is widely distributed in a variety of foods, but most often at low concentrations. Estimates are that the typical U.S. diet provides roughly 40 ug/day. There are only a couple of foods which contain biotin in large amounts, including royal jelly and brewer's yeast. The best natural sources of biotin in human nutrition are liver, legume, soybeans, Swiss chard, tomatoes, romaine lettuce, and carrots. This includes almonds, eggs, onions, cabbage, cucumber, cauliflower, goat's milk, cow's milk, raspberries, strawberries, halibut, oats, and walnuts. The most important natural sources in feeding nonruminant animals are oilseed meals, alfalfa, and dried yeasts. It is important to note that the biotin content of food varies and can be influenced by factors such as plant variety, season, and yield (endosperm-to-pericarp ratio).[2])))