Stomach pain. Endo=sm. Ulcers (neg hpyl) and mild duodenitis. Tx:omeprazoleotcx4wks. Can I drink apple cider vinegar? Do I have poss. Gluten allergy?

Possible but. Gluten sensitivity is unrelated to ulceration. As for apply cider vinegar, it is a controversial subject. Theoretically, anything acidic should be avoided. However some patients feel that it helps their reflux symptoms. I would be very interesting in finding out what apple cider vinegar does for you.