Reviewed by Peptide Treatments Medical Advisory Board (Medical Advisory Board)
Tirzepatide: Contraindications & Drug Interactions
Safety information for Tirzepatide including known contraindications, drug interactions, and important precautions.
Back to Tirzepatide overviewContraindications
- Personal or family history of medullary thyroid carcinoma (MTC)
- Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)
- History of pancreatitis
- Pregnancy (Category X)
- Severe gastrointestinal disease including gastroparesis
Drug Interactions (5 interactions)
Important: This table summarizes known and theoretical interactions. Always consult a healthcare provider before combining Tirzepatide with any medication.
| Drug | Classification | Mechanism |
|---|---|---|
| Insulin | Documented | Additive hypoglycemia risk — dose reduction of insulin typically required (25-50%) |
| Sulfonylureas | Documented | Increased hypoglycemia risk — reduce sulfonylurea dose by 50% |
| Other GLP-1/GIP agonists | Documented | Additive GI effects — avoid combination |
| Oral contraceptives | Theoretical | Delayed gastric emptying may reduce absorption; use non-oral backup for 4 weeks after dose changes |
| Warfarin | Theoretical | Potential INR changes; monitor INR more frequently |
Use our interactive Drug Interaction Checker for real-time lookup.