b12 injections cause diarrhea Metformin: (Side Effects) First-line for Type 2 diabetes (and used in insulin resistance/PCOS) → most side effects are GI and improve with “start low, go slow” 🔹 Common Side Effects (Mostly GI) Can Vitamin B12 Shots Cause

They are especially suitable for individuals needing ongoing, maintenance-level doses of B12

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PubMed PMID: 38969654

NIH ODS

The dose ranges studied spanned from 0.25 mg to 54 mg, allowing for assessment of dose-response relationships in adverse effect profiles

The choice between them depends on individual goals, with GLP-1s better for appetite control and 5-amino-1MQ better for metabolic enhancement