Where to Inject Tirzepatide
Tirzepatide (Mounjaro/Zepbound) is a dual GIP/GLP-1 receptor agonist administered once weekly via subcutaneous injection. Injection guidelines parallel semaglutide with the same three approved sites.
Recommended Injection Sites
Abdomen
PrimaryPreferred site for most users. Large area for weekly rotation.
Outer Thigh
SecondaryFDA-approved alternative. Alternate legs weekly.
Upper Arm
SecondaryThird approved site. May need assistance.
Injection Technique
Wash Hands
Wash hands with soap and water for 20+ seconds. Dry with a clean towel.
Prepare the Dose
Wipe the vial stopper with alcohol. Draw the calculated dose into an insulin syringe. Remove air bubbles.
Clean the Site
Swab the injection site with alcohol in a circular motion. Allow to air dry for 30 seconds.
Pinch and Insert
Pinch a fold of skin at the injection site. Insert the needle at 90 degrees with a quick, smooth motion.
Inject Slowly
Push the plunger slowly over 5-10 seconds. Wait 5 seconds, then withdraw. Apply gentle pressure.
Dispose Safely
Place the syringe directly into a sharps container. Return the vial to the refrigerator.
Timing & Frequency
Once weekly, same day each week. Any time of day, with or without meals.
Once weekly. Dose titration over 20+ weeks per protocol.
Site Rotation
Rotate between abdomen, thigh, and arm weekly. Vary exact spot within each site.
Local vs Systemic Effects
Tirzepatide is systemic. It engages both GIP and GLP-1 receptors throughout the body. Injection site does not affect efficacy.
Warnings & Precautions
- !Tirzepatide is a prescription medication.
- !Never skip titration steps—GI side effects are dose-dependent.
- !Monitor thyroid function.
- !Not recommended for subjects with pancreatitis history.
Frequently Asked Questions
Is tirzepatide injection technique different from semaglutide?
No. Both use the same SubQ technique, same sites, same pen needles. The only differences are dose amounts and titration schedules.
Related Guides
Tirzepatide Research Guide
Full guide on Tirzepatide including benefits, dosage, and research.
General Injection Technique
Step-by-step guide covering proper injection technique and safety.
Peptide Dosage Calculator
Use our free calculator to determine the correct dosage, reconstitution volume, and injection amount for Tirzepatide.