alot of people have reactions when they drink it straight... even in small amounts. Try making a salad dressing using olive oil, ACV, and what ever herbs you like.... maybe even some honey. Then eat it with the salad of choice.... i fairly certain that if the acv isnt that strong, you wont have an upset stomach. I guess what I am trying to suggest is that you change the means by which you take it, and see if you get better results.