Weight loss with Ozempic, Wegovy & Co: the facts

Many people are initially skeptical of medical weight loss. At the same time, interest in medications such as Ozempic, Wegovy, and Mounjaro is growing. Between hope, hype, and justified criticism, one key point is often lost: a clear indication, medical supervision, and a realistic plan for the time during and after treatment are what matter medically.

It is also important to understand what GLP-1-based medications are actually intended for and where off-label use begins. For that context, the overview on indications and off-label use of GLP-1 agonists is helpful.

What is medical weight loss?

Dr. Nicolette Lammers: “Medical weight loss is a structured treatment program that, depending on the starting situation, may also include weight loss injections for weight reduction. The goal is to improve hunger and satiety signals so that patients can realistically implement dietary and activity changes in everyday life. However, lifestyle change remains essential in order to stabilize results long term.”

Caroline Alberts: “Medically supervised weight loss is not a purely medication-based process. It includes nutrition, exercise, sleep, stress regulation, and routines that work in daily life. Medications can open the door, but they do not replace the work of changing habits.”

This is exactly where a central principle of modern obesity therapy comes in: medications are not treated as a stand-alone measure, but as one part of a structured overall concept. This includes the initial medical assessment, risk evaluation, follow-up monitoring, and adapting treatment to pre-existing conditions and tolerability.

Truly sustainable? What studies show about Ozempic, Wegovy, and Co.

The short answer is: Yes, medication-based weight loss can be sustainable — but usually only if treatment is closely supported and planned for the long term.

In Europe, Wegovy (semaglutide) is primarily approved for weight reduction, while Ozempic (also semaglutide) is primarily a diabetes medication. These two products are often mixed up in public discussions. Anyone who wants to understand the differences can find the product pages for GLP-1 therapy with Wegovy and Ozempic (semaglutide) for medically supervised treatment in the treatment section.

In clinical studies, semaglutide showed clear effects in obesity therapy over a longer period of time. In the STEP-5 study, the mean weight change after 104 weeks was about 15 percent with semaglutide 2.4 mg, compared with around 2.6 percent with placebo. This suggests that the effect is not just short term when treatment is continued.

At the same time, discontinuation studies also show the other side of the picture very clearly: when treatment is stopped, many patients regain weight. This was observed for semaglutide in STEP-4 and for tirzepatide (the active ingredient in Mounjaro) in SURMOUNT-4. Medical weight loss should therefore often be understood as a long-term treatment for a chronic disease, rather than a short-term “cure.”

This also explains why the question “Does it work?” is often too limited. The more important medical question is: Under what conditions does the result remain stable? This includes a realistic goal, a sustainable nutrition strategy, physical activity, side-effect management, and a plan for handling plateaus or later tapering.

Are Ozempic, Wegovy, and Co. rightly criticized?

Partly yes — but often for the wrong reasons. The problem is not automatically physician-indicated therapy itself, but above all unsafe handling of it. In many cases, the real issue is the criticism of weight loss injections being mixed together with criticism of misuse.

1. Justified criticism: hype, self-medication, and unrealistic expectations

A common mistake is the idea that medications will “automatically” create lasting weight regulation without behavior change. In practice, this often leads to disappointment, especially when nutrition, daily routines, and exercise are not developed alongside treatment.

In addition, gastrointestinal symptoms such as nausea, vomiting, diarrhea, or constipation can be common side effects. That is why slow dose escalation, close feedback, and medical assessment are important. The article on the therapy process and side effects before starting can help patients prepare for typical symptoms.

2. Justified criticism: risks of buying medication without medical supervision

It is especially problematic when medications are obtained from unsafe sources online. This is not only about incorrect use, but also about real safety risks. Authorities and international organizations have reported counterfeit Ozempic cases in recent years. In Germany, BfArM documented cases in which counterfeit pens contained insulin instead of semaglutide — with significant health risks.

Anyone ordering medication without medical supervision also has a higher risk of use errors, inappropriate dosing, unrecognized contraindications, and delayed responses to warning signs. That is exactly why medication-based weight reduction should always be medically monitored.

3. Less helpful: blanket criticism of the entire therapy approach

Blanket statements such as “weight loss injections are just a trend” fall short. For people with obesity or relevant comorbidities, a medically managed treatment can be a useful component. Criticism is appropriate when it targets misuse, lack of supervision, and unreliable sourcing — not when it dismisses guideline-based treatment as a whole.

How medical supervision improves safety and sustainability

Whether medical weight loss remains effective long term is often decided in the details. Structured care generally includes:

medical history and suitability assessment
selection of the right medication and the right dose
support with side effects and dose adjustments
nutrition and behavior strategies for everyday life
planning weight stabilization after the active weight loss phase

The last point in particular is often underestimated. After injection therapy, a strategy for long-term stabilization is crucial, for example with a focus on meal structure, protein intake, physical activity, and relapse prevention. That is why the article on long-term weight stabilization after injection therapy is a helpful follow-up.

Patient Story: Kathleen’s Path to Better Health

Case report from practice: Experiences can vary greatly from person to person and do not replace medical advice.

Years of Struggling With Weight

“I struggled with excess weight for years and suffered from various health problems. When I was diagnosed with polycystic ovary syndrome (PCOS), I finally understood why losing weight was so difficult for me. My hormonal imbalance not only made fat loss harder, but also caused severe exhaustion and intense menstrual bleeding lasting for weeks. My insulin resistance also made healthy eating more difficult.”

An Investment in My Own Health

“I knew I needed a major push in the right direction. Gastric bypass surgery was not an option for me because it does not improve all PCOS symptoms. After extensive research, I decided on medical weight loss at The Body Clinic. Although the program was not covered by my health insurance, I saw it as a necessary investment in my health.”

The Positive Domino Effect

“Eight months later, I’m on a good path. I still have around 20 kg to go, but I can already feel how much has improved. The medications reduced my hunger, and I no longer tolerate fatty foods or alcohol well — which makes healthy choices easier. My legs retain less water, so I can move comfortably again. Today, I can ride a bike, walk my dog, and actively take part in life. I wake up energized in the morning and feel that my body and mind are in balance. And best of all: my PCOS symptoms have improved significantly. I got my life back!”

Conclusion: Sustainable, Yes — But Not a Quick Fix

Medical weight loss with Ozempic, Wegovy, and similar medications can be effective and sustainable when it is medically supervised, realistically planned, and combined with lifestyle measures. What rightly deserves criticism are hype-driven use, self-medication, and obtaining medication from unsafe online sources.

Anyone considering therapy or already using it should carefully clarify the indication, risks, side effects, and long-term strategy. In complex situations, an appointment for medical assessment can help align treatment, safety, and sustainability in a structured way.

Sources

Note: This article is for informational purposes only and does not replace individual medical advice.

Medical weight loss with Ozempic, Wegovy, and others: truly sustainable or rightly criticized?