How much B12 is needed to supplement a vegan diet?

2.4 mcg. Assuming you are not otherwise B12 deficient, you need at least 2.4 mcg per day (more if pregnant). You can get this from pretty much any supplement containing b12. You should, however, get your blood tested to make sure you're not already deficient. If so, you can "catch up" before going on maintenance supplementation. Good job on going vegan. Now just make sure you take a B12 supplement.
First determine need. You do not need to supplement, unless a need is diagnosed. Some physicians will test for you , but a naturopathic physician may be more in tune with vegan needs.

Related Questions

Can you tell me how I could avoid a B12 deficiency on a vegan diet without supplements?

You can't. I'm sorry. Being a vegan is safe is an only if you're willing to supplement. Otherwise, you're playing a foolish game with your life -- you will end up with brain damage. Like all communities of true believers, the vegans -- who can rightly claim the moral high ground in this era of cruel factory farming -- contain many people who will mislead you. Be smart and don't ruin yourself like others have. Read more...

What supplements should be taken for a vegan diet? Taking 1000 mcg b12, 4 grams omega 3 from hemp oil and ground flax and protein from lugumes. Thx.

Vegan diet. If vegan diet includes eggs and milk products and is nutritional balanced with healthy foods, then you are already on enough good supplements. Read more...
It depends. It depends on your entire diet as to whether and what kind of supplements are recommended. There are a very few dietitians who can help you design a vegan diet. Do a diet diary of everything you consume, and take it for a consult. Stick with your plan to go vegan and your health will be rewarded. Read more...
Minerals & vitamin D. Vegans are likely to become deficient in vitamin D, calcium, iodine, iron, vitamin A, zinc, and iodine. Even if you supplement, the diet is primarily a moral rather than a health-promoting decision; when you control for the fact that vegans have other healthy habits, the claimed benefits mostly vanish. It's your decision and I'm glad you've asked. Read more...

I'm considering a vegan diet, but I'm concerned about getting enough vitamin b12. How can I get some natural b12? I'd rather not take pills.

Be careful. Fortified foods. Ask the other vegans. Becoming a vegan is serious business. As a statement against the cruelty of factory farming of animals, it's admirable. The health benefits have been difficult to demonstrate scientifically; the best-known book relied on gravely flawed data from mao's china. You'll need guidance on supplementing -- your personal physician can help here. Read more...
Red Star Yeast . The only reliable vegan source of B12 that i know of is red star nutritional yeast vegetarian support formula (t-6635+). About 2 rounded teaspoons a day supplies adequate b12. I think it would be a lot easier to take a pill! see http://www.Vrg.Org/nutrition/b12.Php. Read more...