b12 with tirzepatide Eli Lilly Issues Warning Regarding Safety Risks of Compounded Vitamin Combining Vitamin B12 and Mounjaro:

Use the peptide dosage calculation guide to recalculate

Examples include anticholinergic medications and opioid pain medications (e.g., hydrocodone, morphine) Metabolism and clearance Tirzepatide is metabolized by proteolytic cleavage of the peptide backbone, beta-oxidation of the C20 fatty diacid moiety and amide hydrolysis DOSING Dosage forms Single-dose pen and single-dose vials 2.5 mg/0.5 ml 5 mg/0.5 ml 7.5 mg/0.5 ml 10 mg/0.5 ml 12.5 mg/0.5 ml 15 mg/0.5 ml Kwikpen (each pen contains 4 doses) 4 doses of 2.5 mg: 10 mg/2.4 mL (4.17 mg/mL) 4 doses of 5 mg: 20 mg/2.4 mL (8.33 mg/mL) 4 doses of 7.5 mg: 30 mg/2.4 mL (12.5 mg/mL) 4 doses of 10 mg: 40 mg/2.4 mL (16.7 mg/mL) 4 doses of 12.5 mg: 50 mg/2.4 mL (20.8 mg/mL) 4 doses of 15 mg: 60 mg/2.4 mL (25 mg/mL) Multi-dose vial (each vial contains 4 doses) 4 doses of 2.5 mg/0.6 mL: 10 mg/2.4 mL (4.17 mg/mL) 4 doses of 5 mg/0.6 mL: 20 mg/2.4 mL (8.33 mg/mL) 4 doses of 7.5 mg/0.6 mL: 30 mg/2.4 mL (12.5 mg/mL) 4 doses of 10 mg/0.6 mL: 40 mg/2.4 mL (16.7 mg/mL) 4 doses of 12.5 mg/0.6 mL: 50 mg/2.4 mL (20.8 mg/mL) 4 doses of 15 mg/0.6 mL: 60 mg/2.4 mL (25 mg/mL) Dosing (adults and pediatric patients aged 10 - 17 years) Starting: 2.5 mg subcutaneously once weekly

Hold if you are losing weight consistently

DIY dosing + guesswork Customers are left to figure out dosing, timing, and safety on their own, often by copying Reddit threads or influencers