1g=1000mg so if you are taking 500g that would be 500,000mg, which seems unlikely. I suspect you might be taking 500mg. I take a B supplement that is across the board 100mg. and GNC actually carries one that is 150 mg. across the board (with the exception of B-5 and B-12, which is listed in mcg.) B vitamins are pretty essential in today's world because it benefits your nervous system. It is water soluble, and therefore needs to be replenished every day. Also, stress, smoking, alcohol and many other things destroy vitamin C and B and if you take more than you need you just excrete it out. You can buy flush-free niacin if you are taking it in mega-doses. It certainly is worth a try.
1g=1000mg so if you are taking 500g that would be 500,000mg, which seems unlikely. I suspect you might be taking 500mg. I take a B supplement that is across the board 100mg. and GNC actually carries one that is 150 mg. across the board (with the exception of B-5 and B-12, which is listed in mcg.) B vitamins are pretty essential in today's world because it benefits your nervous system. It is water soluble, and therefore needs to be replenished every day. Also, stress, smoking, alcohol and many other things destroy vitamin C and B and if you take more than you need you just excrete it out. You can buy flush-free niacin if you are taking it in mega-doses. It certainly is worth a try.