Results vary, but improvements in hair, skin, and nails are typically noticed over several weeks with consistent treatment
Eating smaller meals more frequently works better
Common side effects associated with B12 supplementation include: Local injection site reactions (for intramuscular preparations): Pain, redness, or swelling at the injection site Mild bruising or tenderness Itching localised to the injection area These reactions are usually self-limiting and resolve within 2448 hours
People taking metformin, the common diabetes drug, are known to develop B12 deficiency as well, and people who avoid animal products can be deficient
Its always better to use devices that are FDA cleared, says Jessica Weiser, a board-certified dermatologist and founder of Weiser Skin MD
Our full MOTS-c research guide goes deeper on dosing figures and the metabolic literature