The FDA identifies significant risks including lack of human safety data, potential for adverse immune reactions, and insufficient evidence regarding long-term effects, with the agency authorized to take enforcement action against compounding pharmacies that produce these substances for clinical applications
Appropriate labeling and documentation
Health experts have cautioned against use of the drugs, citing a lack of clinical trials for humans and the unknown long-term effects of the substances
Individuals with chronic kidney disease may have impaired Vitamin D metabolism and might require supplementation
While vitamin B12 is generally considered safe, even at high doses, the concept of "too much vitamin B12" is worth exploring
A: Injections deliver B12 directly into the muscle for maximum absorption, bypassing the digestive system where much of the vitamin may be lost