How to Inject Zepbound
Zepbound (tirzepatide) comes as a single-dose injection pen. Store it in the refrigerator at 36°F to 46°F (2°C to 8°C); don't freeze. You can keep it at room temperature up to 21 days.[1]
1. Check the pen: Ensure the solution is clear and colorless. Wash hands.
2. Choose site: Inject weekly into stomach (at least 2 inches from navel), thigh, or upper arm. Rotate sites.
3. Prep: Remove cap. Clean site with alcohol swab.
4. Inject: Hold pen at 90 degrees, press button fully until it clicks (holds 10 seconds). You'll hear 2 clicks and see the dose counter move.
5. Dispose: Put used pen in sharps container. Don't reuse.
Administer anytime of day, with or without food. If missed, take within 4 days; skip otherwise and resume next week.[1][2]
Zepbound Dosing Schedule
Start at 2.5 mg once weekly for 4 weeks. Increase by 2.5 mg every 4 weeks if tolerated, up to 15 mg max:
- Weeks 1-4: 2.5 mg
- Weeks 5-8: 5 mg
- Weeks 9-12: 7.5 mg
- Weeks 13-16: 10 mg
- Weeks 17+: 12.5 mg or 15 mg
Your doctor sets the plan based on response and side effects.[1]
What If I Experience Side Effects During Use?
Common: nausea, diarrhea, vomiting, constipation, stomach pain, injection site reactions. Start low and slow to minimize. Serious risks include thyroid tumors (boxed warning), pancreatitis, gallbladder issues, low blood sugar (if on insulin/other diabetes meds). Stop and call doctor for severe symptoms like persistent vomiting or abdominal pain.[1][2]
Who Shouldn't Use Zepbound and Drug Interactions
Avoid if personal/family history of medullary thyroid carcinoma, Multiple Endocrine Neoplasia syndrome type 2, or severe allergies to tirzepatide. Not for type 1 diabetes. Interacts with insulin/sulfonylureas (hypoglycemia risk); oral meds (may slow absorption). Inform doctor of all meds/supplements.[1]
How Zepbound Fits Into Weight Loss Plans
Approved for chronic weight management in adults with obesity (BMI ≥30) or overweight (BMI ≥27) with weight-related conditions like hypertension or diabetes. Use with reduced-calorie diet and exercise. Expect 15-21% average weight loss at highest dose in trials.[2]
[1] Zepbound Prescribing Information, Eli Lilly and Company, https://pi.lilly.com/us/zepbound-uspi.pdf
[2] FDA Approval Summary, Zepbound, https://www.fda.gov/drugs/resources-information-approved-drugs/fda-approves-new-medication-chronic-weight-management