b12 liquid injectable CYANOCOBALAMIN Vitamin Solution for Horses, 5000-mcg, 100-mL - Easy Refills an active form of the vitamin. Compounded Methylcobalamin (Vitamin B12) Injection,
Description
& Vance, D

Inform your doctor that you are taking biotin supplements before any blood work

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Vitamin B12 is water soluble and high doses generally are excreted in the urine, which makes toxicity rare