Zepbound (tirzepatide) is dosed on a gradual schedule designed to ease your body onto the medication and reduce side effects. Here is the full breakdown of strengths, the titration plan, and how it is taken.
Quick Answer
Zepbound comes in six once-weekly doses: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, and 15 mg. Treatment starts at 2.5 mg once weekly for four weeks (a starting dose, not for maintenance), then steps up to 5 mg. After that, the dose can increase by 2.5 mg at a time, no more often than every four weeks, until you reach a maintenance dose that works and is tolerated. The recommended maintenance doses are 5 mg, 10 mg, or 15 mg. It is injected once a week under the skin.
What Are the Different Doses of Zepbound?
Zepbound is available in six strengths, each as a single-dose pen or single-dose vial:
| Dose | Role |
|---|---|
| 2.5 mg | Starting dose (titration only) |
| 5 mg | First maintenance dose |
| 7.5 mg | Titration step |
| 10 mg | Maintenance dose |
| 12.5 mg | Titration step |
| 15 mg | Highest maintenance dose |
Each pen and vial delivers its full dose in 0.5 mL of solution. Higher strengths are more concentrated, not larger in volume.
How Is Zepbound Dosed?
The dosing schedule is built around slow escalation:
Check your GLP-1 eligibility
Use our free BMI Calculator to see if you may qualify for provider-reviewed GLP-1 therapy.
Try the BMI Calculator →- Weeks 1 to 4: 2.5 mg once weekly. This is a starting dose to let your body adjust; it is not meant for long-term weight maintenance.
- Week 5 onward: increase to 5 mg once weekly.
- If more weight reduction is needed and the dose is tolerated, increase by 2.5 mg increments (to 7.5 mg, then 10 mg, and so on), waiting at least four weeks between increases.
- Continue until you reach an effective maintenance dose. The recommended maintenance doses are 5 mg, 10 mg, or 15 mg.
The maximum dose is 15 mg once weekly. Your prescriber tailors the pace based on how you tolerate each step and how you respond.
Is Zepbound a Weekly Injection?
Yes. Every Zepbound dose is taken once a week, on the same day each week, at any time of day, with or without food. You inject it under the skin of the abdomen, thigh, or upper arm. You can change which day you take it as long as your last dose was at least 72 hours (three days) earlier. There is no daily or monthly version; the long action of tirzepatide is what allows once-weekly dosing.
Is 5 mg of Zepbound a Maintenance Dose?
Yes, 5 mg is the first of the recommended maintenance doses, meaning it is the lowest dose intended for ongoing use rather than just titration. Some people stay at 5 mg if it works well for them; others continue stepping up to 10 mg or 15 mg for greater effect. The 2.5 mg dose, by contrast, is purely a starting dose and is not recommended for maintenance.
How Much Weight Loss Is Expected?
In the trials the drug class was studied in, including SURMOUNT-1 over 72 weeks, participants on tirzepatide saw substantial average weight reduction, with larger reductions generally at higher doses. Individual results vary widely and depend on dose, consistency, diet, activity, and personal factors. Weight loss builds gradually over months as you titrate up, not all at once.
Can You Take Zepbound Every 5 Days?
No. Zepbound is approved for once-weekly dosing only. Taking it more frequently, such as every five days, is not supported by the label and can increase side effects like nausea and the risk of low blood sugar if you take other diabetes medications. Keep at least 72 hours between doses when adjusting your schedule, and otherwise stick to once a week.
If You Cannot Get Your Dose
Branded GLP-1 and GIP/GLP-1 supply has fluctuated. If your strength is unavailable, do not improvise by combining lower-dose pens. Talk to your prescriber or pharmacist about options, which may include compounded tirzepatide through a licensed provider, where the prescriber sets your milligram dose. You can compare licensed options with the FormBlends provider comparison tool or read about compounded tirzepatide and semaglutide programs.
Frequently Asked Questions
What are the doses of Zepbound? 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, and 15 mg, all taken once weekly. Maintenance doses are 5, 10, or 15 mg.
How often is Zepbound taken? Once a week, on the same day each week, injected under the skin. There is no daily or monthly form.
Is 2.5 mg a maintenance dose? No. It is a starting dose for the first four weeks to help your body adjust. The first maintenance dose is 5 mg.
How is Zepbound titrated? Start at 2.5 mg for four weeks, move to 5 mg, then increase by 2.5 mg no more than every four weeks until you reach an effective maintenance dose, up to 15 mg.
Can I take Zepbound every five days? No. It is approved for once-weekly use only. Keep at least 72 hours between doses when adjusting your day.
What is the highest dose of Zepbound? 15 mg once weekly is the maximum dose.
How many doses does Zepbound have? Six strengths total, three of which (5, 10, and 15 mg) are recommended maintenance doses.
Sources
- FDA Zepbound (tirzepatide) Prescribing Information, Dosage and Administration: https://www.accessdata.fda.gov/drugsatfda_docs/label/2023/217806s000lbl.pdf
- Zepbound official site, dosing information: https://www.zepbound.lilly.com/
Talk to a licensed provider
Start your free assessment. A licensed provider reviews every request before anything is prescribed, and not everyone qualifies.
Start the assessment →