According to the B1: 1.1 milligrams (mg) B2: 1.1 mg B3: 14 mg NE B5: 5 mg B6: 1.3 mg Biotin: 30 micrograms (mcg) Folic acid: 400 mcg DFE B12: 2.4 mcg For men, the NIH recommends the following daily intake: B1: 1.2 mg B2: 1.3 mg B3: 16 mg NE B5: 5 mg B6: 1.3 mg Biotin: 30 mcg Folic acid: 400 mcg DFE B12: 2.4 mcg Adults aged 65 years and older and people who are higher risk of B vitamin deficiency , so your recommended intake may be higher
However, for those supplementing, high B12 levels are generally a reflection of recent supplementation, not a cause for concern
We look at: Improvement in symptoms like fatigue and weakness Normalization of laboratory values Presence of any side effects or adverse reactions By using patient-specific factors, lab tests, and response-based strategies, we create a custom Vitamin B12 plan
Strittmatter WJ, Saunders AM, Schmechel D, Pericak-Vance M, Enghild J, Salvesen GS, et al
AOD 9604
The signs and symptoms of vitamin B12 deficiency may include: fatigue difficulty thinking and remembering infertility heart palpitations pale skin dementia weight loss numbness and tingling in the hands and feet mood changes constipation a sore tongue low appetite Many people are unclear about precisely what these vitamins do despite vitamin B12 being so important for the bodys healthy function