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Syringe Capacity - 1ml/cc Needle Size - 25Ga 1inch

I recommend: at least 2,000 mcg (g) cyanocobalamin once each week, ideally as a chewable, sublingual, or liquid supplement taken on an empty stomach or at least 50 mcg daily of supplemental cyanocobalamin or a serving of B12-fortified foods three times a day, each containing at least 190 percent of the Daily Value listed on the nutrition facts label Those over 65 years of age should take at least 1,000 mcg (g) cyanocobalamin every day

January 27, 2026 B Vitamin Supplements Review, which includes our and other Top Picks for B-12 B vitamins

Some may experience mild digestive upset, though this is less common, contact our office if you are in need of Zofran (nausea medication)