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One study in the The Journal of Allergy and Clinical Immunology found that some injected forms of B vitamins at higher doses, like B12, can be linked with an allergic reaction

The MTHFR mutation is common and can impact your health, but the effects vary depending on factors like diet, lifestyle, and environment

BPC 157 can also increase muscle strength, endurance and energy output

Researchers should consult primary literature for complete experimental details

Even though vitamin supplements are sold over the counter, any vitamin supplementation should always be discussed with a physician, says Gary Soffer, MD, a Yale Medicine allergist and immunologist who offers guidance on the safe use of dietary supplements, among other things, within the Integrative Medicine Program at Smilow Cancer Hospital