Not very much product usage per bottle, unless you only weigh about 100-150 lbs. I took an entire bottle over 3 days with only 5 dropper-fuls and it was gone. I can't spend $50 just to test the product and still give a really good rating because I couldn't tell. It DID stop my nausea & gastric noises but it tastes bad. It helped some, not too cost-effective.