Tirzepatide

Unlike most items in this catalog, tirzepatide is an FDA-approved prescription drug (marketed as Mounjaro for diabetes and Zepbound for weight management). Dual agonism of GIP and GLP-1 receptors, improving insulin secretion, slowing gastric emptying, and reducing appetite.

Glycemic control, weight management, body composition — extensively studied given its approved-drug status.

Lyophilized. Reconstitute with bacteriostatic water per the general reference below.

General reconstitution & storage reference for lyophilized peptides:

1. 1Reconstitute with bacteriostatic water (0.9% benzyl alcohol) rather than plain sterile water — the preservative meaningfully extends usable shelf life.
2. 2In bacteriostatic water, refrigerate at 2–8°C, typically usable for ~28–30 days. In plain sterile water (no preservative): 7–14 days.
3. 3Lyophilized (unmixed) vials are stable at refrigerated or, for some peptides, frozen temperatures for extended periods prior to reconstitution.
4. 4Avoid repeated freeze-thaw cycles, direct light/UV exposure, and heat — these are the primary drivers of peptide degradation.
5. 5Reconstitute gently: inject the water down the inside wall of the vial and swirl — don't shake, which can denature the peptide structure.

GI side effects common; carries the same GLP-1-class thyroid C-cell tumor caution seen on approved labeling. The FDA's 2025 compounding crackdown (removal from the drug shortage list) specifically increased enforcement attention on non-pharmacy tirzepatide sales.

• FDA — Concerns with Unapproved GLP-1 Drugs Used for Weight Loss
• AJMC — FDA to Restrict Ingredients in Mass-Marketed Compounded GLP-1s