Garlic can be good. I was eating and taking it in supplement form as well as eating copious amounts of plain yogurt to combat candida prior to getting a diagnosis from an MD. However, I ended up developing or already had allergies to garlic and milk proteins which have never gone away. Die-off, although uncomfortable (or painful) is tough to work through. The good news is that I did recover completely. Good luck.
I don't mind the die off symptoms so much if it means that the garlic supps are actually working. I can hang for a few days not feeling all that great if it means I'll feel much better in the future.
Good to hear you recovered well using the garlic. I don't eat a whole lot of fresh garlic, even though I don't seem to have much problems with FODMAPS (wheat/gluten aside). I figured the capsules would be more concentrated and anyway they don't leave any odor afterwards.