Thank you Sherpa and Dquoixte for replying. I'll take your considerations into account. I hope someone can also tell me something about Dr. Wilson's supplements. I read some online reviews of Dr. Lam and they were not that nice. How was your experience with Dr. Lam Sherpa? did you consider Dr. Wilson when you were researching? What about herbal remedies like Indian Ginseng, Siberian Ginseng and all.