Semaglutide Dosage for Weight Loss: The Complete Dosing Guide

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Semaglutide is one of the most effective weight loss medications available, but the dose matters. Start too fast and you may experience severe nausea. Stay too low and you may not see meaningful results. Understanding the semaglutide dosage schedule helps you work with your provider to find the right dose for your body and goals.

This guide covers the standard Wegovy and Ozempic dosing schedules, how compounded semaglutide is dosed, what to do if you miss a dose, and when to slow down titration. Whether you are just starting or already on treatment, this is the dosing resource you need.

Semaglutide dosing basics

Semaglutide is a once-weekly subcutaneous injection. It comes in pre-filled pens for brand-name products, or in vials with syringes for compounded versions. The key principles are:

• Start low: The initial dose is intentionally low to reduce side effects.
• Titrate slowly: The dose is increased every 4 weeks as tolerated.
• Same day each week: Inject on the same day each week for consistent blood levels.
• Any time of day: Semaglutide can be taken with or without food.
• Rotate injection sites: Abdomen, thigh, or upper arm to reduce skin irritation.

Wegovy dosing schedule for weight loss

Wegovy is the FDA-approved brand-name semaglutide for chronic weight management. The standard dosing schedule is:

Some patients and providers extend each phase if side effects are bothersome. The goal is to reach the dose that gives you good results with tolerable side effects — not necessarily the maximum dose.

Ozempic dosing for weight loss

Ozempic is FDA-approved for type 2 diabetes, but it contains the same active ingredient as Wegovy (semaglutide). It is sometimes prescribed off-label for weight loss. The standard Ozempic dosing schedule is:

Because Ozempic maxes out at 2.0 mg, it is generally less effective for weight loss than Wegovy 2.4 mg. However, it may be covered by insurance for diabetes while Wegovy is not covered for weight loss.

Compounded semaglutide dosing

Compounded semaglutide is typically dosed similarly to brand-name, but the exact schedule depends on the pharmacy concentration and your provider's protocol. A common compounded semaglutide titration looks like this:

Compounded semaglutide usually comes in a vial, and patients draw the prescribed volume into a syringe. Your provider should give clear instructions on units to draw based on the vial concentration. Never guess the dose. If instructions are unclear, contact your pharmacy or provider.

For more on compounded vs brand-name, read our compounded semaglutide guide.

How to inject semaglutide correctly

Semaglutide is injected subcutaneously — just under the skin, not into a muscle. Common injection sites include:

• Abdomen, at least 2 inches from the belly button
• Front of the thigh
• Back of the upper arm

Best practices:

• Rotate sites each week to prevent irritation
• Clean the site with an alcohol swab and let it dry
• Pinch the skin gently and insert the needle at a 45 to 90 degree angle
• Inject slowly and hold for a few seconds before removing the needle
• Dispose of needles in a sharps container

What to do if you miss a dose

Missing a weekly injection occasionally is not a crisis. Here is what to do:

• 5 days or less since missed dose: Take the missed dose as soon as you remember, then resume your normal schedule.
• More than 5 days since missed dose: Skip the missed dose and take your next dose on the regular day.
• Never double up: Do not take two doses within 48 hours.

Missing one dose is unlikely to reverse your progress, but frequent missed doses can make appetite and blood sugar less stable.

When to slow down titration

Faster is not always better with semaglutide. Your provider may keep you at a lower dose or slow titration if you experience:

• Persistent nausea or vomiting
• Severe constipation or diarrhea
• Fatigue or weakness
• Significant loss of appetite leading to undereating
• Palpitations or dizziness

Many patients achieve excellent results on 0.5 mg or 1.0 mg. The goal is the lowest effective dose, not the highest tolerated dose.

Semaglutide dose and expected weight loss

Higher doses generally produce more weight loss, but the relationship is not linear for everyone. Here is what clinical trials show on average:

For a real-world week-by-week timeline, read our GLP-1 before and after results guide.

Can you combine semaglutide with other medications?

Semaglutide is sometimes combined with metformin, especially in patients with PCOS or prediabetes. Your telehealth provider may also adjust other diabetes medications if you take them. Always tell your provider about all medications and supplements you take.

Frequently asked questions

What is the starting dose of semaglutide for weight loss?

The standard starting dose for Wegovy is 0.25 mg once weekly for 4 weeks to minimize nausea.

How long does it take to reach the full semaglutide dose?

The standard Wegovy schedule reaches 2.4 mg over approximately 5 months, increasing every 4 weeks.

What happens if I miss a dose of semaglutide?

If 5 days or less have passed, take it as soon as possible. If more than 5 days have passed, skip it and resume your normal schedule.

Can I stay on a lower dose of semaglutide?

Yes. Many patients do well on 0.5 mg or 1.0 mg. The goal is the lowest dose that produces good results with manageable side effects.

How is compounded semaglutide dosed?

Compounded semaglutide follows a similar titration but is dispensed in vials. Follow your provider's exact dosing instructions based on the vial concentration.

Conclusion

Semaglutide dosing is designed to be gradual. Starting at 0.25 mg and slowly increasing every 4 weeks helps your body adapt and minimizes side effects. Whether you use Wegovy, Ozempic, or compounded semaglutide, the key is working closely with your provider to find the dose that gives you the best balance of results and tolerability.

Ready to start? Check your BMI and get a personalized semaglutide dosing plan from a US-licensed provider.

Affiliate disclosure: This article contains affiliate links. We may earn a commission if you sign up through them, at no extra cost to you. Medical disclaimer: This content is for informational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any medication.