Weight-loss injections: Which doctor is responsible and how does the treatment work?

Anyone considering drug treatment for obesity soon faces a practical question: who should I turn to, and what happens next? This article describes which practices are qualified to assess this condition, what happens at the first appointment, and how treatment is initiated and monitored.

Key points at a glance

• This applies to medical practices that treat obesity as a medical condition. These may include general practitioners’ practices, as well as specialist clinics or obesity centres.
• The first step is an examination, including a medical history, laboratory results and enquiries about any underlying conditions – not the selection of a medicine.
• A prescription is the possible outcome of this assessment; it is not a guarantee nor a predictable result. Furthermore, it does not automatically mean that the health insurance provider will cover the costs.
• A purely online prescription without a consultation and without follow-up care is not the same as a structured obesity treatment programme.

When drug treatment is even considered

Drug therapy is not the first line of treatment for obesity. The initial approach is a basic programme comprising dietary, exercise and behavioural measures. The German guideline issues a ‘may’ recommendation regarding drug therapy: it may be considered as a supplementary measure if the basic therapy does not yield sufficient results or if comorbidities suggest a more intensive treatment, and it should be combined with the basic therapy.

This is not a mere formality. Whilst the medicines affect appetite and satiety, they are no substitute for changes in dietary habits or physical activity. Without these accompanying measures, there is also no basis for maintaining the results once treatment has ended.

Which practice is responsible for you

There is no specific medical specialism for obesity. In practice, therefore, several different specialists may be consulted.

Your GP’s surgery is usually the most sensible first step. They will have access to your medical history, previous laboratory results and current medication, and many practices treat obesity themselves or refer patients to the appropriate specialist. In cases of impaired glucose metabolism or hormonal issues, diabetes and endocrinology clinics are the appropriate point of contact. Clinics specialising in nutritional medicine provide structured support with dietary management. Obesity centres and specialist clinics usually work in collaboration with several professional groups, which can be an advantage in cases of severe obesity or multiple comorbidities.

Which of these services is suitable depends on your underlying conditions and on how comprehensive the care needs to be. Find doctors offering weight-loss consultations near you

What happens at your first appointment

The focus is on taking an initial assessment. Measurements usually include height, weight and the BMI calculated from these, often including waist circumference, as well as blood pressure. With regard to laboratory values, the guideline for assessing cardiometabolic risk specifies fasting blood glucose, as well as total, LDL and HDL cholesterol, and the thyroid-stimulating hormone (TSH) level to investigate hypothyroidism. Which other tests are appropriate depends on your medical history and medication, and is decided by the practice.

The consultation is at least as important. This includes your weight history, previous attempts to lose weight and why they failed, any underlying medical conditions, all medication including over-the-counter products, a possible pregnancy or the desire to have children, as well as questions about your eating habits. This last point is by no means incidental: if an eating disorder is also present, it must be identified and treated alongside the main condition, as it affects the course of treatment.

At the end, there should be an assessment that you understand, including an answer to the question of which treatment options are suitable for your case and which are not. An appointment that leads straight to a prescription without this initial assessment skips the crucial part.

How treatment is initiated and monitored

If drug treatment is started, this is usually done with a low initial dose, which is gradually increased over a period of weeks. This approach is taken to ensure tolerability, as gastrointestinal symptoms tend to occur particularly at the start of treatment and following dose increases. The treating practice will decide how quickly the dose is increased – or whether it is increased at all – based on your progress.

The initial consultation also includes instructions on how to use the treatment, a discussion of goals and the arrangement of follow-up appointments. These appointments are about more than just the number on the scales: they cover tolerability, blood pressure, laboratory results, muscle strength, diet and whether the hoped-for benefits are being realised. It is also important to inform other treating doctors about the treatment, particularly before planned procedures involving anaesthesia, as delayed gastric emptying plays a role in such cases.

If there is no effect or if the side effects outweigh the benefits, discontinuing treatment is also one of the possible outcomes. You should therefore always discuss any symptoms, changes or adjustments you have made yourself with the practice and not make any changes on your own initiative.

Why an online prescription is not the same thing

Services that promise a prescription following a short questionnaire differ from medical treatment in one key respect: there is no physical examination, no laboratory results, and, as a rule, no follow-up care.

This is not merely a question of thoroughness. Without complete information, warnings and drug interactions cannot be reliably identified, side effects go unobserved, and there is no plan for the period following treatment. Telemedicine in itself is not the problem here. Treatment exclusively via communication media is permissible under professional regulations in individual cases, provided it is medically justifiable and the required standard of medical care is maintained. The decisive factor is not the channel used, but whether a medical assessment actually takes place.

Another point concerns costs. The fact that a practice is authorised to issue prescriptions does not mean that the statutory health insurance scheme will cover the costs. How reimbursement is arranged forms part of the treatment plan and should be discussed in advance.

Frequently Asked Questions

What documents should I bring with me?

It is helpful to provide a complete list of medications, including dietary supplements, current and past laboratory results, doctors’ letters regarding co-morbidities, and details of previous treatment attempts. If you have been keeping a record of your weight over a longer period, this is also useful.

Do I need a referral?

Not for GP practices. For specialist consultations and obesity centres, a referral is usually required or necessary, depending on the facility. A phone call in advance will clarify this more quickly than any general enquiry.

Will I definitely get a prescription at the end?

No. Whether a prescription is issued depends on the doctor’s assessment, not on the patient’s wish for one. A promise in advance is not compatible with an assessment of the individual case.

What happens if I have a bad reaction to the treatment?

Discuss your symptoms with your GP rather than changing or stopping the treatment yourself. Depending on the situation, various options may be considered, ranging from an adjusted increase in dosage to discontinuing the treatment. If you experience severe or persistent upper abdominal pain, you should see a doctor as soon as possible.

Classification

The path to medical treatment for obesity begins with a consultation, not with a form. You’ll be well prepared if you can provide a full account of your weight history, any underlying conditions and the medicines you’re taking, and if you go in with the expectation of exploring treatment options together, rather than being prescribed a specific medicine.

For the next step, it’s worth looking at medical practices in your area that offer suitable consultation hours. View doctors offering weight-loss consultations by region