
Tirzepatide / Niacinamide Injection is a compounded formulation prepared by our 503A pharmacy for individual patients under the direction of a licensed prescribing healthcare provider. The preparation combines tirzepatide — a dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor agonist — with niacinamide, a B-vitamin derivative. This compounded medication is not an FDA-approved drug product; compounded medications are not reviewed by the FDA for safety, efficacy, or quality, and are available only pursuant to a valid individual prescription.
| Vial Size | Tirzepatide | Niacinamide |
|---|---|---|
| 4 mL vial | 17 mg/mL | 2 mg/mL |
| 2.5 mL vial | 8 mg/mL | 2 mg/mL |
| 2 mL vial | 17 mg/mL | 2 mg/mL |




Dosage is determined exclusively by the patient's prescribing healthcare provider and should not be adjusted without medical guidance. A structured titration approach — beginning at a lower dose and increasing incrementally — is typical, allowing individual tolerance to be assessed at each stage. Patients who experience gastrointestinal side effects during titration should consult their provider before making any adjustments.
Subcutaneous injection technique, site rotation, aseptic preparation, and proper needle disposal should all be reviewed with a qualified healthcare professional prior to self-administration. Administration resources, including illustrated injection instructions, are available from our pharmacy upon request.
This medication is contraindicated in patients with a personal or family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia syndrome type 2, and in those with a known hypersensitivity to tirzepatide, niacinamide, or any component of the formulation. It is not recommended during pregnancy. Patients with severe gastroparesis, a history of pancreatitis, or significant kidney or liver impairment should discuss individual risk with their prescriber before initiating therapy.
Common side effects include nausea, vomiting, diarrhea, constipation, abdominal discomfort, reduced appetite, injection site reactions, fatigue, and headache. These effects are most frequently reported during dose escalation and may diminish over time. Patients should seek prompt medical attention for severe or persistent abdominal pain, signs of allergic reaction, symptoms suggestive of pancreatitis, or any concerning change in health status. Concurrent use with insulin, sulfonylureas, or other glucose-lowering agents may require dose adjustments to reduce hypoglycemia risk and should be managed in close coordination with the prescribing provider.
Store refrigerated at 36°F–46°F (2°C–8°C). Keep protected from light and away from freezing conditions. Do not use if the solution appears cloudy, discolored, or contains visible particulate matter. Once a multi-dose vial has been accessed, maintain sterile technique on each subsequent use and note the date of first access. Do not transfer the medication to alternate containers. Dispose of unused or expired medication in accordance with applicable pharmaceutical waste guidelines — contact your pharmacy for local disposal guidance.
Compounded medications are prepared for individual patients and are not FDA-approved. FDA does not evaluate compounded drugs for safety, efficacy, or quality prior to dispensing. This product is available only through a valid prescription from a licensed healthcare provider. Patients should use this medication solely under appropriate medical supervision, with regular follow-up to assess therapeutic response and monitor for adverse effects.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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