In case you’ve been looking for new methods to advance your weight reduction efforts, you’ve in all probability heard about incretin mimetic medicine like Mounjaro, Ozempic, Rybelsus, Wegovy, and Zepbound. Many individuals have reported dramatic weight reduction by taking some of these drugs.
However what occurs if you cease taking incretin mimetics for weight loss? Do you achieve weight again after quitting, or do it’s important to take them endlessly to keep up your outcomes?
Quick reply: While you cease taking incretin mimetics, you’ll probably regain many of the weight you misplaced.
That may be discouraging when you think about the downsides of long-term use. For starters, there’s the price — each Mounjaro and Ozempic have a listing value of about $1,000 for a month’s provide. Out-of-pocket prices will fluctuate primarily based in your insurance coverage plan, however they will add up shortly, particularly if it’s important to issue them into your month-to-month price range endlessly.
These drugs are additionally comparatively new to the scene, which implies their long-term results might not be absolutely understood. It’s essential to weigh all of the potential dangers and rewards earlier than deciding whether or not incretin mimetics are best for you. And, in fact, it’s best to at all times speak to your physician earlier than beginning (or stopping!) any medicine.
In case you’re contemplating incretin mimetics or their kin for weight reduction, right here’s what it’s essential to know.
How Do Mounjaro and Ozempic Work?
Mounjaro, Zepbound, Ozempic, Rybelsus, and Wegovy work by mimicking metabolic hormones known as incretins. Therefore, these medicine are known as incretin mimetics.
This hormonal mimicry enhances the physique’s means to keep up wholesome blood sugar ranges. It additionally helps scale back urge for food and meals consumption by making you are feeling full sooner and for longer after consuming. In consequence, many individuals expertise weight reduction as a secondary impact.
Whereas these medicine all work in comparatively comparable methods, there are a number of key variations relating to their mechanisms of motion and supposed use.
Semaglutide mechanism of motion
These three drugs are manufactured by Novo Nordisk and include the identical lively ingredient, semaglutide. Semaglutide mimics the glucagon-like peptide-1 (GLP-1) hormone, which helps to advertise insulin manufacturing, sluggish digestion, and suppress urge for food.
Ozempic (injectable) and Rybelsus (capsule kind) are each FDA-approved as first-line remedies for sort 2 diabetes. Nevertheless, medical doctors will generally prescribe these drugs off-label — i.e., not as directed — for weight reduction.
Wegovy, alternatively, is an FDA-approved, injectable model of semaglutide formulated specifically for weight management. It’s supposed for adults with weight problems or chubby adults with not less than one weight-related well being situation.
Tirzepatide mechanism of motion
The lively ingredient in each Mounjaro and Zepbound is tirzepatide. Like semaglutide, tirzepatide mimics the GLP-1 hormone and will increase insulin sensitivity. However tirzepatide’s mechanism of motion additionally mimics the gastric inhibitory peptide hormone (GIP), which helps to advertise insulin secretion and regulate urge for food and satiety.
“There have been research that present that tirzepatide leads to extra weight reduction than semaglutide,” says Mir Ali, MD, bariatric surgeon and medical director of MemorialCare Surgical Weight Loss Heart at Orange Coast Medical Heart in Fountain Valley, CA. “This has been attributed to affecting two receptors moderately than one.”
Mounjaro and Zepbound, that are each administered through once-weekly injections, are manufactured by Eli Lilly. Mounjaro is FDA-approved as a diabetes medication, whereas Zepbound is approved for weight management in adults with weight problems, or chubby adults with not less than one weight-related well being situation. (Sound acquainted?)
Like Ozempic and Rybelsus, Mounjaro could also be prescribed off-label for weight reduction.
What Occurs When You Cease Taking GLP-1 Medicine for Weight Loss?

Incretin mimetics may also help with weight administration whilst you’re taking them. However if you cease taking these medicine, your metabolic operate will revert back to its pre-medication state, and the quantity on the size will probably comply with swimsuit.
Listed below are a number of widespread uncomfortable side effects of stopping Mounjaro, Ozempic, and the like:
1. Your urge for food will make a comeback
“[Incretin mimetics’] major impact for weight reduction is to suppress the urge for food and sluggish the emptying of the abdomen,” Ali says. “As soon as the medicine is stopped, the urge for food returns to its earlier state and the abdomen resumes emptying on the regular price. These processes can result in an individual eager to eat extra.”
2. You’ll probably regain a lot of the burden you misplaced
As soon as your urge for food is again in full swing, you’ll have to hold an in depth eye in your calorie consumption. “If the affected person just isn’t cautious, they will begin regaining weight,” Ali says.
One medical trial discovered that, a 12 months after stopping incretin mimetics, contributors had regained a median of two-thirds of the weight they’d initially misplaced. Their cardiometabolic enhancements went again to baseline, too.
3. Your blood sugar could rise
While you cease taking incretin mimetics, Ali says, insulin secretion returns to its earlier state and it’s possible you’ll discover a rise in your blood glucose ranges. In a recent peer-reviewed study, researchers divided contributors into 4 teams. Three teams took tirzepatide in various doses, whereas the fourth group was given the sort 2 diabetes drug dulaglutide.
One 12 months later, all three tirzepatide teams had larger enhancements in blood glucose ranges than the dulaglutide group. Nevertheless, two months after stopping remedy, all 4 teams had re-elevated blood glucose ranges — and the tirzepatide teams have been already experiencing rebound weight achieve.
The research authors concluded that their findings “counsel a necessity for steady prescription or cautious follow-up when stopping.”
Can You Simply Cease Taking Mounjaro and Ozempic?
Given the extent to which long-term medicine like semaglutide and tirzepatide have an effect on the physique, quitting chilly turkey just isn’t suggested with out the steering of a doctor. That stated, there isn’t a compelling proof that discontinuing their use will trigger critical withdrawal signs.
There is a rising physique of analysis, nonetheless, suggesting that many individuals expertise a “rapid rebound” in blood glucose ranges and weight achieve after stopping incretin mimetics. These results “usually are not thought of withdrawal signs, however the return of the affected person’s prior physiology,” Ali says.
Preserving weight reduction after quitting incretin mimetics
When you’ve hit your weight reduction objectives, it could be attainable to cease taking semaglutide and tirzepatide with out regaining a lot weight. However you’ll must be ready to make use of the next way of life methods:
“If a affected person is ready to make important, long-term dietary and way of life adjustments, then they’ve a greater probability of retaining the burden off when the drugs are stopped,” Ali says.
As at all times, you will need to keep in mind it’s best to at all times seek the advice of a healthcare supplier earlier than stopping and restarting Mounjaro, Ozempic, or every other such medicine.
Ought to You Take into account Taking Weight Loss Medicine?

Incretin mimetics could also be getting a number of hype, nevertheless it’s essential to notice that they’re supposed to be long-term remedies for power well being points — not only a fast technique to lose a few stubborn pounds.
“These drugs are designed for sufferers categorized as overweight with a physique mass index over 30, or over 27 with different co-morbid situations,” Ali says.
Even for individuals who meet the medical standards, a weight reduction drug is not any substitute for a balanced weight loss plan and common train. Consuming nutrient-dense foods continues to be one of the best ways to get the nutritional vitamins, minerals, fiber, and antioxidants you want. And a weight reduction medicine can’t stand in for train relating to bettering strength, aerobic capacity, heart health, bone well being, and extra.
How Lengthy Do GLP-1 Medicine Keep in Your System?
Based on the Meals and Drug Administration, the half-life of tirzepatide is about 5 days. Meaning if you cease taking these medicine, it could take round a month for the drug to be utterly gone out of your physique.
The half-life of semaglutide is round seven days, so if you cease taking these medicine, it could keep in your system for about 5 weeks after the final dose.
Nevertheless, to keep up their effectiveness, semaglutides and tirzepatides are prescribed for weekly use, they usually’re supposed for use indefinitely. “Weight problems is being considered a chronic disease, equivalent to diabetes or hypertension, so sufferers could must be on these drugs long-term,” Ali says.
