please watch all videos on youtube by Dr Thomas Levy and also Andrew Saul, also go to Andrew Saul's website which is supposed to be the largest data base of alternative healing for diseases. In order to take mega doses of Vitamin C you must take the liposomal form, and you take take regular C and make it into liposomal, please see all videos on youtube for this. As far as the B vitamins are concerned; many people are allergic to the B vitamins, so I recommend learning how to muscle test (kinesionlogy) your supplements and if you find you are allergic to the B's then see an NAED practitioner or other allergy eliminator energetic worker to get rid of any possible reaction to the B's or any other supplement or food. hope this helps