I took garlic over a two and a half year period, small amounts I could tolerate but i still had a burning sensation in my gut, my practitioner told be i was just sensitive and it was ok. I took bigger amounts, a bulb a day adviced my ayvurdic practitioner. It caused me so much pain and inflammation in my intestine, left side. It also made my bladder issues much worse, not recovered from that symptom. Took about 10 to 12 months to settle the constant pain down, not fully recovered but intestinal pain much better than it was. I know everybody is different, what works for one might not work for another. For my sensitive body it was too strong.