The absorption of levothyroxine and other thyroid hormone preparations may be affected by concurrent use of Semaglutide / Cyanocobalamin Injection
If you're exploring MIC B12 alongside weight management, metabolic optimization, or nutrient support, combining biomarker assessment with genetic context supports a more informed conversation with your provider
The other two forms are hydroxocobalamin and cyanocobalamin
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Certain medications The following drugs can reduce levels of vitamin B12 in your body: Antibiotics -- long-term use can lower vitamin B levels generally Anti-seizure drugs Chemotherapy medicines, especially methotrexate Drugs used to reduce stomach acid, like H2 blockers (Pepcid AC, Tagamet, Zantac) and proton pump inhibitors (Nexium, Prevacid, Prilosec) Metformin (Glucophage) -- taken for diabetes Colchicine -- taken for gout Some cholesterol-lowering medications Other causes You're over 65
Zeisel SH et al