Semaglutide dosing: a step-by-step approach

Semaglutide does not work at full strength from day one. The dosing schedule for semaglutide is deliberately structured in stages, so that your body can get used to the medicine and side effects are kept to a minimum. In this article, you can read exactly what the dosing schedule looks like, what the differences are between Ozempic and Wegovy, and what you can expect during each phase of treatment.

Why is semaglutide dosed in stages?

Semaglutide stimulates GLP-1 receptors in the brain and gastrointestinal tract. This leads to reduced hunger, slower gastric emptying and, ultimately, weight loss. It is precisely this delay in gastric emptying that is also the reason why you may experience nausea, diarrhoea or vomiting at the start. By gradually increasing the dose, the body gives itself time to get used to the effect. Clinical studies show that this titration protocol significantly reduces side effects without affecting the final efficacy.

The dosing schedule for Wegovy (2.4 mg per week)

Wegovy is the form of semaglutide specifically authorised for weight management. The dosing schedule for Wegovy consists of five phases, which together span sixteen weeks:

Phase 1 lasts for the first four weeks. You start with 0.25 mg per week. This is a starting dose intended solely for acclimatisation; no significant weight loss can yet be expected at this level. Phase 2, weeks five to eight, increases the dose to 0.5 mg per week. In phase 3 (weeks nine to twelve), the dose is increased to 1.0 mg, and in phase 4 (weeks thirteen to sixteen) to 1.7 mg. From week seventeen onwards, you reach the maintenance dose of 2.4 mg per week.

Each injection is administered subcutaneously, in the abdomen, on the upper thigh or on the upper arm. You should rotate the injection sites to avoid irritation. In the STEP 1 study, participants lost on average almost 15% of their body weight after 68 weeks on this schedule, as clinical studies show.

The Ozempic titration schedule (up to 2.0 mg per week)

Ozempic contains the same active ingredient but is registered for type 2 diabetes mellitus, not for weight management. The schedule is slightly more compact: you start with 0.25 mg per week for four weeks, then switch to 0.5 mg as a maintenance dose and can, if necessary, increase to 1.0 mg and finally 2.0 mg per week. Would you like to read more about exactly how Ozempic works and what you can expect? You can read about this on Goodweigh’s Ozempic page.

When is the dose increased?

The dose is not increased automatically at a fixed time. Your treating doctor will assess whether you are ready for the next step. The criteria include: how well you tolerate the current dose, whether gastrointestinal symptoms have decreased, and whether sufficient weight loss is occurring. It is also possible that the doctor may decide to continue at a particular dose for longer if clinically appropriate. The schedule is a guideline, not a strict requirement.

Real-world data shows that less than a quarter of patients actually reach the maximum dose of 2.4 mg. Nevertheless, the majority of participants who continued for twelve months or longer achieved weight loss of over 14%, which is comparable to the results in controlled clinical trials. The conclusion: the titration schedule is the goal, not the maximum dose.

What happens if you cannot tolerate the maximum dose?

Some people experience persistent nausea or vomiting at higher doses. In that case, you can, in consultation with your doctor, continue with a lower dose. This is not a failure of the treatment, but an adjustment to your body. Side effects tend to subside in most people the longer the treatment continues. More information on what may occur when using semaglutide can be found in the overview of side effects of Ozempic for weight loss. Always consult your doctor if the side effects are severe or persist.

What happens if you miss an injection?

If you have missed a weekly injection, you can still administer it if there are at least two days remaining until your next scheduled injection. If you are closer to your next injection day, skip the missed dose and continue with the normal schedule. Never double the dose. If in doubt, it is wise to contact your treating doctor.

Semaglutide and long-term weight loss

The dosing schedule is designed for long-term use. Research into what happens after stopping semaglutide shows that, on average, people regain two-thirds of the weight they lost within a year of finishing treatment. This highlights that semaglutide is not intended as a short-term fix, but as part of a broader lifestyle intervention. At Goodweigh, the medication is therefore always combined with coaching and medical guidance. Read more about Goodweigh’s programme.

Am I eligible for semaglutide?

Semaglutide (such as Wegovy) is approved for adults with a BMI of 30 or higher, or a BMI of 27 or higher in combination with weight-related health issues such as high blood pressure or sleep apnoea. Whether you are eligible depends on several factors. Read the criteria in the article on when you are eligible for GLP-1 medications. You can also start the application process directly via Goodweigh: the doctor will assess your situation and draw up a treatment plan that suits you.

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