If you are on a vegan diet I recommend taking 2 supplements: Vitamin B12 and Vitamin D
Vitamin B12: You can’t get enough by eating unwashed organic produce or mushrooms grown in B12-rich soil. The recommended dose is 25 to 100 micrograms per day or 1,000 micrograms 2-3 times per week. Eating nutritional yeast is another option since it has a lot of Vitamin B12. I sprinkle it on pastas and salads.
Vitamin D: If you live where it’s sunny and warm all year and you spend time outdoors without sunscreen, you can make enough. I live in Washington state and it is definitely not sunny year-round. So, I need Vitamin D. You can take a supplement or fortified foods supplying 1,000 I.U.s of vitamin D.