Journal of Applied Physiology .PMID 21148343Read source Sikiric P, Seiwerth S, Rucman R, et al
It can interact with thyroid hormones
Follow-up blood work is the clinical gold standard, and we typically re-test after a set number of injections to confirm your levels are rising into a healthy range

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Injections may be given weekly or biweekly for a short period when levels are low or symptoms are present