What Happens When You Stop Taking Wegovy or Ozempic?

When you stop Wegovy or Ozempic, appetite comes back over a few weeks and, without a plan, most of the weight follows over the next year. The two medicines contain the same drug, semaglutide, and the evidence on stopping it is unusually clear. In the extension of the main Wegovy trial, people who stopped after 68 weeks regained about two-thirds of the weight they had lost in the following year, and the improvements in blood pressure, cholesterol and blood sugar that came with the loss largely reversed with it.¹ A second trial that switched people to placebo after 20 weeks saw the same pattern.² None of that is a verdict on willpower. It is what happens when a medicine that was holding appetite down is removed and the body's defence of its old weight is unopposed again.

• Weeks one to three: hunger and "food noise" return as the drug level falls; a slower stomach speeds back up
• You may keep losing for a few weeks, then the trend reverses
• Over a year: around two-thirds of the lost weight regained on average in the trials, with wide variation
• Side effects after stopping: appetite, cravings, bloating or looser stools as digestion speeds up, sometimes low mood or energy
• What protects results: protein, resistance training, fibre, routine, regular weigh-ins and a prescriber conversation about maintenance

How quickly does semaglutide leave your system?

Semaglutide has a half-life of about a week, so it takes five to six weeks to clear almost completely after the last injection. That is slower than tirzepatide, the medicine in Mounjaro, which clears in about a month. The practical effect is that appetite returns gradually rather than overnight: most people notice hunger building from the second or third week, with the appetite-suppressing effect largely gone by six weeks. This is the Wegovy and Ozempic chapter of our guide to living well on Mounjaro; the sister page, what happens when you stop taking Mounjaro, covers the same ground for tirzepatide, including the biology of why hunger returns.

Why am I still losing weight after stopping Wegovy?

Because the drug is still partly there, and so are your habits. For the first two or three weeks after the last dose, semaglutide levels are falling but meaningful, appetite is still reduced, and the portion sizes and food choices you built over months carry on by momentum. The reversal shows up later, when both fade. People who search "still losing weight after stopping Ozempic" are describing the first half of a curve whose second half is the regain in the trials, which is the argument for using those weeks to lock in the habits below rather than to relax.

Will you regain the weight? What the STEP trials show

The STEP 1 extension followed people for a year after they stopped semaglutide at week 68. On average they regained about two-thirds of what they had lost; a year off the drug, they were still lighter than when they started, but not by much, and their blood pressure, blood fats and blood sugar had moved back towards their starting values.¹ STEP 4 ran the experiment differently: everyone took semaglutide for 20 weeks, then half were switched to placebo. Over the next 48 weeks the placebo group regained a large part of their loss while the group that continued kept losing.² The pattern is the same in the tirzepatide trials, so it is a property of stopping GLP-1 medicines in general, not of one drug.

The average hides wide variation. Some people hold most of their loss; others regain the majority within months. The research on long-term weight maintenance, not specific to these medicines, keeps finding the same separators: regular physical activity, a consistent eating pattern rather than swings, weighing in often enough to catch small regains, and ongoing support.³

Side effects after stopping Wegovy or Ozempic

There is no withdrawal syndrome in the medical sense; semaglutide does not cause dependence. What people describe is the medicine's effects reversing. Appetite and cravings return, often abruptly in the third or fourth week, and the quiet in the head that many people call the end of "food noise" ends with them. Digestion speeds back up, which can mean a week or two of bloating, wind or looser stools, the mirror image of the constipation many had at the start. Some report low mood or low energy during the transition, plausibly linked to the appetite shift and to eating more again rather than to a separate withdrawal effect. If you were taking semaglutide for type 2 diabetes, blood sugar control can worsen after stopping, and that is a conversation to have with your diabetes team before the last dose, not after.

What protects your results

The levers are the same as for Mounjaro and they are unglamorous. Keep protein at 1.2 to 1.6 g per kilogram a day in three or four portions, because it is the most filling nutrient per calorie and protects muscle while appetite returns.⁴ Keep resistance training, two or three times a week, because weight regained without it tends to be fat rather than muscle, and because exercise is the behaviour most consistently linked to maintenance after GLP-1 treatment.⁵ Keep fibre at 30 g and fluid at 1.5 to 2 litres; the appetite coming back is blunted by both. Keep the routine: the same meal times, the same foods in the house, the side plate. Weigh weekly and act on a small drift. And decide in advance what you will do if regain outpaces you, because a maintenance dose or going back on is a prescriber conversation, not a failure.

What does not protect your results: berberine, keto, fasting or anything sold as a GLP-1 booster. None reproduces the hormone signalling the medicine provided. Do GLP-1 supplements work goes through the evidence for each, and which foods raise your own GLP-1 covers the one honest lever in that direction, which is food.

Should you taper off Wegovy?

There is no strong trial evidence that a formal step-down reduces regain compared with stopping outright, because the drug already leaves the body gradually over five to six weeks. Some UK prescribers offer a step-down to ease the appetite transition and give habits time to settle; the decision is theirs and yours together. Whatever you do, tell your prescriber before stopping, and never adjust doses yourself to stretch out a supply.

What we don't know

• Who regains and who does not. The trials describe averages; no reliable predictor exists.
• Whether a taper changes anything. Untested in trials.
• Long-term outcomes after several cycles of stopping and restarting. No data yet.

Frequently asked questions

What happens when you stop taking Wegovy?

Appetite returns over three to six weeks as semaglutide clears, digestion speeds back up, and in the trials people regained around two-thirds of their lost weight over the following year.¹

Why do people stop Ozempic?

Side effects, cost, supply, reaching a goal weight, planning a pregnancy, or a prescriber's decision. Whatever the reason, the regain pattern is the same, so the plan matters more than the reason.

What are the side effects of stopping Wegovy?

Returning appetite and cravings, a week or two of bloating or looser stools as digestion speeds up, and for some people low mood or energy during the transition. There is no withdrawal syndrome.

Can you keep the weight off after stopping Ozempic?

Some people do, with deliberate effort: protein, resistance training, fibre, routine and regular weigh-ins. Partial regain is common and the biology behind it is well documented; it is not a personal failing.^{1, 3}

Sources

1. Wilding JPH, et al. Weight regain and cardiometabolic effects after withdrawal of semaglutide: the STEP 1 trial extension. Diabetes, Obesity and Metabolism, 2022. PubMed 35441470.
2. Rubino D, et al. Effect of continued weekly subcutaneous semaglutide vs placebo on weight loss maintenance in adults with overweight or obesity: the STEP 4 randomized clinical trial. JAMA, 2021. PubMed 33755728.
3. Flore G, et al. Weight maintenance after dietary weight loss: systematic review and meta-analysis on the effectiveness of behavioural intensive intervention. Nutrients, 2022. PubMed 35334917.
4. Leidy HJ, et al. The role of protein in weight loss and maintenance. American Journal of Clinical Nutrition, 2015. PubMed 25926512.
5. Zeigler Z, et al. Structured exercise during and after incretin-based pharmacotherapy discontinuation: a narrative review of mechanisms, evidence and recommendations. Healthcare, 2026. PubMed 42588312.

This article is general information, not medical advice. Wegovy and Ozempic are prescription medicines: talk to your prescriber before stopping, particularly if you take them for type 2 diabetes.