For patients with severe cases of anemia or B12 vitamin deficiencies, a form of vitamin B12 called Hydroxocobalamin is sometimes used and does require a prescription
For instance, Vitamin B12 is known to support cardiovascular health by reducing levels of homocysteine, an amino acid linked to heart disease
(2000) Metabolic Studies of a Synthetic Lipolytic Domain (AOD9604) of Human Growth Hormone Horm Res 53(6):274278
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Several drugs, including para-aminosalicylic acid, have been reported to reduce the absorption of methylcobalamin, vitamin B12
Early human safety work suggested AOD-9604 was generally well tolerated, with a placebo-like adverse-event profile and no IGF-1 elevation [5] [6]