Nutritional Supplements Vegans Need

Here's a quick list of supplements that all vegans need.

• Vitamin B12--cyanocobalamin not methylcobalamin: The recommended dose is 25 to 100 micrograms per day or 1,000 micrograms 2 to 3 times per week. If you have not been taking B12 for a while, start out with 2,000 micrograms daily for several weeks. B12 isn’t toxic, don't worry that too much could be harmful. 
• Vitamin D2: 1,000 I.U.s of vitamin D2 daily. Vegans do not use D3, which is animal-sourced. 
• Iodine: a good source is iodized salt.

Other supplements to consider for your particular needs: Calcium, Iron, DHA. Further reading: "Recommended Supplements for Vegans", a blog post by registered dietician Virginia Messina, author of Vegan For Life.