After trusting advice for an upset stomach I headed to take a couple TBSP of ACV to rid my upset stomach. I take some expensive highly regulated medications as well. I was NOT informed this should be taken about an hour prior to or longer after taking my prescriptions. I was, however assured, it should be fine to take with meds. In about fifteen to about twenty minutes later experienced horrible swelling of my stomach then explosive vomiting. The vinegar reacted badly to my prescribed meds! Now, I had to wait twelve hours before taking my next dose and that dose I just took was gone! DO TAKE EXTREME CARE IF TAKING MEDS AND ACV CLOSELY TOGETHER! You may suffer. ACV does work when taken properly and not close to ingesting prescription meds.