What is the maximum dosage B 12 & B 3 vitamins and possible side effects ?

Question

I TAKE 500mg OF NIACIN & 500 mcg OF B 12 , IS THIS TOO MUCH ?

Answer 1

These are fine. There are no known side-effects to high dose intakes of B12 (>5,000 mcg per day). High doses of B3 (much higher than you are taking) can produce flushing of the skin and intense itching. There is some concern (it is controversial) that very high doses of B3 for long periods of time can cause liver damage. So, very high doses of B3 should be done under proper professional supervision with periodic liver function blood tests.


Best wishes and good luck.

Answer 2

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RE:
What is the maximum dosage B 12 & B 3 vitamins and possible side effects ?
I TAKE 500mg OF NIACIN & 500 mcg OF B 12 , IS THIS TOO MUCH ?

Answer 3

Those are actually common doses.
Because they're water soluble, you can take a lot of the B vitamins before you hit "maximum" (meaning toxic levels), but most people don't take more than 500 mg of Niacin because of the natural flushing effect. If you're already taking that, you're perfectly fine, although I wouldn't recommend higher on the Niacin. B-12 on the other hand is commonly up to 5,000 mcg, so you could try higher on that to see if you get a better response, however, many people don't need more than 500 mcg.

Answer 4

I'd recommend a supplement that gives you a high absorption rate. Like Mochatonix. It gives you both b12&b3 along with a wealth vitamins. Since its gonna have a higher absorption rate you will get more of the two. You will also get a tremendous energy boost that B vitamins are known for. Because its not nessisceraly how much you take. Its about how much your body absorbs. You can check it out for yourself.

http://www.marketamerica.com/tkshopintl

Answer 5

If the niacin is in the form of nicotinic acid, it can aggravate an ulcer, cause sudden drops in blood pressure and is not recomended for diabetics. It can also cause an unpleasant flush (a temporary prickly heat sensation )
However, if taken as niacinimide (slow niacin or flush-free niacin) it avoids these effects.

Answer 6

Medlineplus.gov is a great source for these answers.

For B12:

http://ods.od.nih.gov/factsheets/vitaminb12.asp

B3 (Niacin)

http://www.nlm.nih.gov/medlineplus/druginfo/natural/patient-niacin.html

There are several other great articles about these two vitamins on the site.