The Power of Bio-Enzymes

i have heard of bioenzyme months ago. last december i guess. my brother is suffering from leukemia for more than 10 years now. and he refused to take in medicines anymore since he says he feels more ill. so, we started giving him herbal medicines. he had used lots of herbal medicines and i say it had helped him a lot. so, when bioenzyme plus (name of the product) came to us, he started using it and been using it for more than two months already. honestly, it's kinda expensive. but it's worth it... it's for my brother! so, no matter how much it takes, we'll give it to him. anyway, i wanna try and be a member. how do i do it? how much should i pay for it? what will be my "plus" side if i am a member?