However, as with any substance, there is a potential for side effects, particularly when used at high concentrations or for prolonged periods
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A doctor usually diagnoses a vitamin B12 deficiency according to a physical examination and blood tests
A large proportion come from China, where imports of hormone and peptide compounds have increased dramatically: US customs data shows they hit $328m in the first three-quarters of 2025, up from $164m in the same period the previous year, the New York Times reported