Took one 20mg Prilosec (prescription) and it severely dulled my taste and gave me borderline runs, 2 apparently common side effects. Don't think I'm gonna take it again. Zantac (with occasional use) has no detectable side effects for me. FWIW, if you're interested in an herbal option, I've started grinding fennel seeds for making tea (or chewing on them) and so far so good for relieving stomach discomfort. Great licorice taste too. Apparently they've been used for centuries to aid in digestion and are said to have a minor antimicrobal effect. I'd always wondered why they're served after meals in Indian restaurants.