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on 4/21/19Hi Dawn - You can use our free tool at https://www.consumerlab.com/RDAs/ to find out how much of each B vitamin you need, as well as how much is too much. You can then check if your B-complex promises the right amount for you. In addition, our B Vitamins Review (based on our analyses of products) shows that some B vitamin supplements contain much more of certain B vitamins (such as folate from folic acid) than listed on their labels, which can pose a risk. The Review is available to our members at https://www.consumerlab.com/reviews/Review_Best_B_Vitamins_and_Complexes_Energy_B6_B12_Biotin_Niacin_Folic_Acid/bvitamins/.