What to Check and Change at an Ozempic Plateau

In STEP 4, semaglutide 2.4 mg, the Wegovy dose, took off 10.6% of body weight in 20 weeks and 7.9% more over the next 48 (STEP 4 trial). Loss slows with time, so one practical check for an Ozempic plateau is whether two 4-week weight averages and your waist have both stopped moving. If they have, look at late doses and the dose you inject first.

Key facts

• The top Ozempic dose, 2 mg, took off 6.4 kg in a 40-week trial against 5.6 kg on 1 mg, not a statistically significant difference (Ozempic label, section 14.1).
• Ozempic tablets, taken daily for type 2 diabetes, go no higher than 9 mg (Rybelsus and Ozempic tablets label, section 2.2).
• In the UK, Wegovy’s label asks for a decision on continuing if less than 5% of starting weight is lost after 6 months (UK Wegovy label, section 4.2).
• On a U-100 syringe, 20 units from a 2.5 mg/mL vial deliver 0.5 mg, half of a 1 mg dose (20 units = 0.2 mL, and 0.2 × 2.5 = 0.5).

Is it a real plateau?

Weigh yourself at least once a week, at the same time of day and under the same conditions, and measure your waist at the navel on the same mornings. After 8 weeks, compare the average of the last 4 weeks with the average of the 4 weeks before. If the two averages match and the waist has not moved, treat it as a plateau.

For example, weekly weights that average 92.4 kg in weeks 1 to 4 and 92.3 kg in weeks 5 to 8, with no change at the waist, count as a stall on this test.

The waist is part of the test because weight alone does not separate fat from lean mass. In DXA scan studies of tirzepatide and semaglutide, 25 to 39% of the loss is lean mass rather than fat (Look et al., 2025; Mozaffarian et al., 2025).

In STEP 1, semaglutide 2.4 mg averaged 14.9% weight loss at 68 weeks (Wilding et al., NEJM 2021). Enter your start date and today’s weight in the GLP‑1 weight loss calculator to see where you sit against a 12-month curve shaped on that result.

What to check and change to break an Ozempic plateau

Late shots and a weaker vial both lower the dose you actually get, so rule them out before changing the dose itself, which on Ozempic tops out at 2 mg (Ozempic label, section 2.2).

Late doses

Ozempic allows a late dose up to 5 days after the missed day; after that, the dose is skipped and the next one goes on your usual day (Ozempic label, section 2.1). Each skipped shot lowers your semaglutide level for longer than a day or two, because the half-life is about 1 week (Ozempic label, section 12.3).

Check the weeks since your weight stopped falling for late or missed shots. Wegovy and Zepbound set their own missed-dose windows. A shot log with dates, such as the one in Pensday, shows late or skipped weeks at a glance.

Compounded vials

On compounded semaglutide, check the dose in your syringe before anything else. Compounded drugs are not FDA approved, and the FDA has received reports of adverse events, some requiring hospitalization, that may be related to dosing errors with compounded semaglutide injections (FDA, concerns with unapproved GLP‑1 drugs).

On a U-100 syringe, the units to draw are the dose in mg divided by the vial’s mg/mL, times 100, so the same draw from a weaker refill delivers less. For a 1 mg dose, the draw doubles when the vial strength halves.

If your weight stopped moving within a few weeks of a new vial, compare the mg/mL on the old and new labels. Then recalculate the draw for the new strength and confirm it with the pharmacy that labeled the vial.

Your dose and what the labels allow next

Wegovy is the same drug as Ozempic, licensed for weight, and its dose goes higher. Both brands also come as daily tablets (Ozempic label, section 2.2; Wegovy label, section 2; Rybelsus and Ozempic tablets label, section 2.2).

Going from 1 mg to 2 mg of Ozempic

Weight fell 6.4 kg on 2 mg and 5.6 kg on 1 mg in a 40-week trial of 961 adults with type 2 diabetes (Ozempic label, section 14.1). The label calls that difference not statistically significant. Stomach and gut side effects were more common on 2 mg, at 34% against 30.8% (Ozempic label, section 6.1).

Wegovy’s higher doses

In the Wegovy label’s 72-week trial, 7.2 mg took off 18.8% of body weight against 15.5% on 2.4 mg (Wegovy label, section 14.2). Every step of the Wegovy ladder, from 0.25 mg to 7.2 mg, lasts at least 4 weeks (Wegovy label, section 2.2).

In the UK, Wegovy’s Summary of Product Characteristics (SmPC) asks for a decision on whether to continue if weight loss is under 5% after 6 months (Wegovy SmPC, section 4.2).

A switch to tirzepatide

Tirzepatide took off 20.2% of body weight against 13.7% for semaglutide in SURMOUNT-5, which started people on one drug or the other (Aronne et al., NEJM 2025). Switching from Ozempic to Mounjaro after a plateau means restarting at 2.5 mg (Zepbound label, section 2.1).

Before you ask for a higher dose or a switch, check how close you are to a healthy weight for your height in the GLP‑1 goal weight calculator.

Protein and strength training

A 2025 joint advisory from The Obesity Society and three other US groups recommends strength training at least 3 times a week, saying protein alone is unlikely to preserve muscle (Mozaffarian et al., 2025). It cites proposals of 1.2 to 1.6 g of protein per kg a day while losing weight (Mozaffarian et al., 2025). Enter your weight in the GLP‑1 protein calculator to see that range in grams.

What to bring to your prescriber

Bring these to the appointment:

• Your current dose, the date you started it, and the dates of earlier steps
• Weekly weights for the last 8 weeks, with the two 4-week averages
• Waist measurements taken on the same days
• Any missed or late doses, with dates
• For compounded semaglutide, the pharmacy, the mg/mL on each vial and the units you draw
• Side effects, and which days of the week they fall on
• Your usual daily protein and how often you strength train