Dosage Details for Zepbound

Health Line

22-07-2025

Key takeaways
Zepbound is a prescription drug used to help with weight loss and sleep apnea in certain adults.
The starting dosage for weight loss and sleep apnea is 2.5 mg injected once weekly for 4 weeks. The typical maintenance dosage of Zepbound for these conditions is 5 mg injected once weekly.
The recommended maximum dosage of Zepbound is 15 mg injected once weekly.
Zepbound is used with a reduced-calorie diet and increased exercise to help with weight loss and long-term weight management. It's prescribed for adults with either:
Zepbound is also prescribed to treat moderate to severe OSA in adults with obesity.
The active ingredient in Zepbound is tirzepatide. Zepbound belongs to a group of drugs called dual glucose-dependent insulinotropic polypeptide (GIP) receptor and glucagon-like peptide-1 (GLP-1) receptor agonists.
This article describes the dosages of Zepbound, its strengths, and how to take it. To learn more about this medication, see this in-depth Zepbound article.
What is Zepbound's dosage?
The following table shows the basics of Zepbound's dosing schedule when prescribed for weight loss. All strengths are listed in milligrams (mg) per 0.5 milliliter (mL) of solution.
Zepbound's form Zepbound's strengths Starting dosage Typical maintenance dosage Maximum dosage
liquid solution inside prefilled single-dose injection pens or single-dose vials • 2.5 mg
• 5 mg
• 7.5 mg
• 10 mg
• 12.5 mg
• 15 mg 2.5 mg injected once weekly for 4 weeks 5 mg injected once weekly 15 mg injected once weekly
The Zepbound dosing schedule when prescribed for OSA is the same as shown in this chart, except that the typical maintenance dosage is 10 mg or 15 mg injected once weekly.
Keep reading for more details about Zepbound's dosage.
What is Zepbound's form?
Zepbound comes as a liquid solution inside prefilled, single-dose injection pens. It also comes in single-dose vials. Both forms involve administering the drug as an injection under your skin.
What strengths does Zepbound come in?
Zepbound comes in six strengths:
2.5 mg/0.5 mL
5 mg/0.5 mL
7.5 mg/0.5 mL
10 mg/0.5 mL
12.5 mg/0.5 mL
15 mg/0.5 mL
What are the usual dosages of Zepbound (tirzepatide)?
Your doctor will likely start by prescribing a low dose and adjust it over time to reach the right amount for you. Starting with a low dose allows your body to get used to the medication and reduces the risk of digestive side effects from Zepbound. Your doctor will ultimately prescribe the smallest dosage that provides the desired effect.
The following information describes dosages that are commonly used or recommended. But be sure to inject the dosage your doctor prescribes for you. They'll determine the best dosage to fit your needs.
Dosage for weight loss and weight management
The typical starting dosage of Zepbound for weight loss is 2.5 mg once per week for 4 weeks. After this, your doctor will likely increase your dosage to 5 mg once per week for the next 4 weeks.
Your doctor may further increase your weekly dose by 2.5 mg until you reach the dosage that's right for you. (This will be your maintenance dose.) Each time they increase your dose, you'll take that new dose for at least 4 weeks.
The highest dosage of Zepbound is 15 mg injected once per week.
Dosage for obstructive sleep apnea (OSA)
The typical starting and maximum doses of Zepbound for OSA are the same as those for weight loss and weight management. (See previous section.) The maintenance dosage of Zepbound for OSA is 10 mg or 15 mg injected once weekly.
Is Zepbound used long term?
Yes, Zepbound is usually a long-term treatment. If you and your doctor determine that it's safe and effective for you, you'll likely use it long term.
What factors can affect my dosage?
The dosage of Zepbound you're prescribed may depend on several factors. These include:
how your body responds to treatment
if you have bothersome side effects from the medication
Frequently asked questions
Here are answers to some commonly asked questions about Zepbound's dosage.
Is Zepbound's dosage similar to that of Wegovy?
Zepbound and semaglutide (Wegovy) come as a liquid solution inside prefilled, single-dose injection pens. Zepbound also comes in single-dose vials. With any form of either drug, you'll give yourself each dose as an injection under your skin once per week.
Each drug has a different dose in milligrams (mg). Your doctor will prescribe the drug and dosage that's right for you.
Check out this Wegovy dosage article for more information on Wegovy's dosing schedule.
To learn more about how Zepbound and Wegovy compare, talk with your doctor.
How long does it take for Zepbound to start working?
Zepbound starts to work after your first dose, but it may take a few weeks before you start to lose weight. Your calorie intake and exercise routine will also affect weight loss.
Your doctor will monitor you during treatment to check whether your weight management plan is working. Talk with them if you have other questions about what to expect from your Zepbound treatment.
Can you use Zepbound a day early?
It is possible. Zepbound is typically injected once per week. However, it is possible to change the day of weekly administration and use Zepbound a day early, depending on when your last dose was.
The drug manufacturer recommends leaving at least 72 hours between injections. So, if your typical injection day of the week is Friday, but you want to give your next injection on the following Thursday, that would work because there are longer than 72 hours between injections.
If you have questions about changing the day you inject Zepbound, talk with your doctor or pharmacist.
Are there Zepbound coupons and savings options?
To save money on your Zepbound prescription, explore these Optum Perks coupons.
How is Zepbound used?
Zepbound comes as a liquid solution inside prefilled, single-dose injection pens. It also comes in single-dose vials.
Both forms are used to administer the drug as an injection under your skin. Your doctor or another healthcare professional will show you how to give yourself these injections at home.
You'll inject Zepbound once per week, on the same day each week. You can inject your dose at any time of day, with or without food.
You can inject Zepbound in your thigh, belly, or the back of your upper arm. (If you want to inject into your upper arm, someone else will need to administer the injections.) To avoid irritating your skin, inject your doses in a different spot each week.
For more detailed instructions on how to use Zepbound, see the printed medication guide that comes with your medication. The manufacturer's website also has more instructions, including a video on how to inject Zepbound.
For information on the expiration, storage, and disposal of Zepbound, talk with your doctor or pharmacist.
Accessible drug containers and labels
Some pharmacies provide medication labels that:
have large print
use braille
feature a code you can scan with a smartphone to change the text to audio
Your doctor or pharmacist may be able to recommend pharmacies that offer these accessibility features if your current pharmacy doesn't.
What if I miss a dose?
If you miss a dose of Zepbound, inject it as soon as you remember. But if it's been more than 4 days (96 hours) since you were supposed to inject it, skip the missed dose. Then, inject your next dose at its usual time.
You should not inject two doses at once to make up for a missed dose. And do not inject two doses within 3 days (72 hours) of each other, as this can increase your risk of side effects.
If you're not sure whether you should take a missed dose, talk with your doctor or pharmacist.
If you need help remembering to inject your dose, try using a medication reminder such as a reminder app downloaded to your phone.
What should be done in case of overdose?
Do not inject more Zepbound than your doctor prescribes, as this can lead to harmful effects.
What to do in case you inject too much Zepbound
Call your doctor right away if you think you've injected too much Zepbound. You can also call 800-222-1222 to reach America's Poison Centers or use its online resource. But if you have severe symptoms, immediately call 911 (or your local emergency number) or go to the nearest emergency room.
Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or another healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.