The garlic thing is still Beck's words -- read them 100 times! I'm talking about actual scientific evidence about garlic being dangerous. Below I wrote a post about my garlic experience where it helped dislodge a parasite in my back muscle. It took 7-10 bulbs to achieve this within 4-5 days.
Additionally, if brain parasites are present you want something to pass the BBB (blood-brain barrier) -- garlic is one of the few substances that will do that, injuring or hurting the parasites.