Vitamin B12 for hair, skin, and nails If you have a very low level of B12, you may be prone to hyperpigmentation (dark spots) on your skin, vitiligo (light patches on your skin), mouth ulcers, eczema, and acne
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There are also negative side effects associated with vitamin B12 injections
When you book an appointment online, you will complete a short medical questionnaire, which our nurse prescriber will review
doi:10.1016/bs.vh.2022.01.016
The recommended daily amount (RDA) varies, depending on age and other factors, but while the recommended dose for an adult is 2.4 mcg (micrograms), B12 vitamin pills are also sold in doses of 5 to 25 mcg, and even 500 mcg to 1,000 mcg or more