Herbs and side effects - help?

Question

Garlic tablets and kelp tablets

I am very thin and always was. But here is my question: When I took garlic tablets I lost weight why?

And my bf took kelp tablets and he broke out into a rash on his face and got dizzy why

And in addition when my bf was taking kelp tablets he had severe pain in his jaw - why

Answer 1

the first question is about garlic     http://heartspring.net/heart_disease_pre...

the second question is http://www.personalhealthzone.com/herbsa...