Your guide to GLP-1 dosages for weight loss

Key takeaways

• Glucagon-like peptide-1 (GLP-1) receptor agonist medications approved for weight loss include semaglutide (Wegovy), tirzepatide (Zepbound), liraglutide (Saxenda), and orforglipron (Foundayo). Others, like Ozempic, may be used off-label.
• Your doctor will start you at the lowest dose and slowly increase it every 4 weeks until you reach the highest tolerated dose. This process, called titration, helps your body adjust and reduces side effects like nausea and vomiting.
• Higher dosages typically lead to more weight loss but also more side effects. Your ideal dose isn’t necessarily the highest available — it’s the lowest effective dose that helps you lose weight steadily without making you feel sick.

Overview

Glucagon-like peptide-1 receptor agonist medications (GLP-1s) were originally approved to manage blood sugar in people with type 2 diabetes. However, these medications can also lead to weight loss, and they’re increasing in popularity for this use.

There are 4 GLP-1s that are approved specifically for weight management: semaglutide (Wegovy), tirzepatide (Zepbound), liraglutide (Saxenda), and orforglipron (Foundayo). Others, such as Ozempic, aren’t approved for weight loss but can be used off-label for this purpose.

Let’s take a look at the dosages of these drugs for weight management and how a doctor determines them.

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What is GLP-1 titration?

The manufacturers of each GLP-1 list the recommended dosages of their medications. Your doctor will always start you at the lowest dose possible, before slowly increasing it to a more effective level. This is a process known as drug titration.

This is done because GLP-1s can cause uncomfortable side effects like nausea, vomiting, or constipation when your body isn’t used to them. Starting at a low dose and slowly increasing it allows your body to gradually get used to the medication, reducing the risk and severity of these side effects.

Is the dosage different for different uses?

GLP-1 dosage tends to be different for weight loss than for other indications, like type 2 diabetes. In type 2 diabetes, the goal is to find the lowest effective dose. For weight management, your dosage will typically be as high as possible to have the greatest effect.

GLP-1 dosages for weight loss

The exact dosage of your GLP-1 will depend on which drug you’re taking and where you are in your treatment journey.

Wegovy dosage

Wegovy comes as both an injection and an oral tablet, each with its own dosages. These are:

• Injection: 0.25 milligrams (mg), 0.5 mg, 1 mg, 1.7 mg, and 2.4 mg. It’s also possible to have a higher, 7.2 mg dosage of Wegovy, but this is less common.
• Tablet: 1.5 mg, 4 mg, 9 mg, and 25 mg.

The injection is given once per week into the thigh, abdomen, or upper arm.

The tablet is taken once per day on an empty stomach with a small amount of water. You must wait at least 30 minutes before eating or drinking. The tablet’s dosages are higher because of the way the drug is absorbed through the stomach.

With either form, the doctor will start with the smallest dose and titrate up every 4 weeks until you reach a maintenance dose. This may be the highest dose, but if you notice severe side effects at this level, you may stay on a lower dose.

Zepbound dosage

Zepbound is a clear liquid solution that’s available in the following forms:

• single-dose and multidose vials for use with a syringe and needle
• prefilled, single-dose pens
• prefilled, multidose pens (Zepbound Kwikpen)

It’s given as an injection under your skin once per week into the thigh, abdomen, or upper arm.

Zepbound is available in the following strengths:

• 2.5 mg
• 5 mg
• 7.5 mg
• 10 mg
• 12.5 mg
• 15 mg

After the starting dosage of 2.5 mg, your doctor will increase your dose to 5 mg once per week. If needed, they can continue to increase your dose by 2.5 mg once every 4 weeks, up to a maximum of 15 mg once per week. You may not need to take the highest possible dosage.

Saxenda dosage

Saxenda comes as a liquid solution in a prefilled pen that’s given as an injection under your skin into the thigh, abdomen, or upper arm. Unlike the other injectable GLP-1s in this article, it’s given once per day.

It comes in the following dosages:

• 0.6 mg
• 1.2 mg
• 1.8 mg
• 2.4 mg
• 3 mg

The doctor will typically increase your dose every 4 weeks. The recommended maintenance dose of Saxenda is 3 mg once per day, which is also the maximum dosage.

Foundayo dosage

Foundayo is available as an oral tablet that’s taken once per day. It comes in the following strengths:

• 0.8 mg
• 2.5 mg
• 5.5 mg
• 9 mg
• 14.5 mg
• 17.2 mg

You’ll start on the lowest dosage and increase every 4 weeks to the maximum tolerated dosage, which may be as high as 17.2 mg. Unlike other GLP-1 pills, Foundayo can be taken with or without food.

Will higher dosages lead to more weight loss?

Typically, a higher dosage of a GLP-1 means more weight loss. Clinical trials find that increased dosages of semaglutide, for example, tend to lead to reduced body weight and improvements in other health markers.

However, an increased dose typically leads to more side effects, especially gastrointestinal effects like nausea and vomiting. In clinical practice, the ideal dosage isn’t necessarily the highest one available on the market — it is your lowest effective dose.

If you are on a mid-level dose and consistently losing a safe, steady 1 to 2 pounds per week without feeling sick, your doctor will likely keep you there. Maxing out the dosage prematurely can leave you with no room to increase if you hit a weight-loss plateau later on in your journey.

Online care for GLP-1s

If a doctor has prescribed a GLP-1, it’s important to take the medication as directed for as long as your doctor recommends. However, some people might face barriers to accessing these drugs, including high costs and access to healthcare appointments.

Online care may make getting treatment easier. With Optum Perks Online Care, for example, you can get a refill of a weight loss prescription or get help with an existing prescription.

With this service, you can submit an online form answering a few questions about your condition, and a licensed healthcare professional will respond soon after — without the need to make an in-person appointment.

Summary

GLP-1s are increasingly used for weight loss, with 4 drugs approved specifically for this purpose. Your dosage will depend on your specific situation and which drug you’re taking.

Usually, you’ll start at the lowest possible dose, and the doctor will increase it every 4 weeks until you reach the highest tolerated dose.

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