You may find that if you do take garlic for killing candida that you could find it a little difficult if you're feeding the yeast at the sametime with sugars in the diet and high carbs. So you might not know what is causing what with symptoms in that case.

Not saying the garlic isn't good to take anyway, but the diet is a wise move to do even before using any antifungals because it starts to gently but surely deny the yeast what it feeds on. THe yeast then weakens and starts to reduce over time (possibly weeks/months). Then when you have gotten through this phase (which can cause enough die off in itself), you can start on an antifungal. Doing one without the other may not bring the results you want and may cause complications.

Garlic can be good stuff, but for some it might be intolerable because it is so strong and can mobilise toxins very strongly also. See how you go with it. It can definitely have an effect with mercury and some actually claim it chelates it! I believe it mobilises it a lot and may cause strong reactions. With me, I simply could not tolerate it for long because it just gave too many reactions with the mercury.