I just bought GNC Women's Ultra Mega multivitamins, because I wanted my body to be in better health, as well as my mind, and because I have been having excess hair shedding (there are extra B vitamins in the GNC). However, I noticed that the serving is 2 tablets a day (one in the a.m. and one in the p.m.). However, I wanted to know if it is necessary to take 2 a day? I am very slim and eat pretty good, so, I don't know if that would be too much for my body or not. Any suggestions? Thanks