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This is because the FDA regulates the testing and approval of drugs, but not how doctors use drugs to treat their patients
Despite providing important mechanistic insights, require further validation in randomized clinical trials (RCTs)
Many patients we see for musculoskeletal, neurological, or cardiopulmonary conditions will have hypothyroidism on their problem list or levothyroxine on their medication list
If a patient is truly deficient and cannot absorb oral B12, injections are lifesaving and the benefits outweigh the small risk
Zhang C, Syed TW, Liu R, Yu J
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