Weight Loss Medication: What You Need to Know
hi-doctor.ai BlogFebruary 1, 2026

Weight Loss Medication: What You Need to Know

Table of contents

Key Point 1Weight loss medications can be a powerful tool when combined with lifestyle changes.

Key Point 2GLP-1 receptor agonists like semaglutide and tirzepatide are highly effective for weight loss.

Key Point 3It's crucial to understand the potential side effects and discuss them with your doctor.

Key Point 4Hi Doctor AI provides convenient access to EU-licensed doctors for weight loss consultations and prescriptions.

Understanding Weight Loss Medications

Weight loss medications, also known as anti-obesity drugs, are prescription medications designed to help individuals struggling with obesity or overweight achieve and maintain a healthier weight. These medications work through various mechanisms to reduce appetite, increase feelings of fullness, or decrease the absorption of fat from the diet. It's important to understand that weight loss medications are most effective when used in conjunction with a comprehensive weight management program that includes a balanced diet, regular exercise, and behavioral therapy.

Hi Doctor AI provides telemedicine consultations. All treatments are prescribed by EU-licensed doctors after reviewing your medical history. We do not sell or ship medications—prescriptions can be used at any licensed pharmacy in the EU.

Types of Weight Loss Medications

Several weight loss medications are available, each with its own mechanism of action, efficacy, and potential side effects. Some of the most commonly prescribed medications include:

  • GLP-1 Receptor Agonists (Semaglutide, Tirzepatide, Liraglutide): These medications mimic the effects of a natural hormone called glucagon-like peptide-1 (GLP-1), which regulates appetite and blood sugar levels. They work by slowing down gastric emptying, increasing feelings of fullness, and reducing food cravings. Semaglutide (Wegovy, Ozempic), tirzepatide (Mounjaro), and liraglutide (Saxenda) are examples of GLP-1 receptor agonists. Clinical trials have demonstrated significant weight loss with these medications, with some individuals experiencing an average weight loss of 15-20% of their initial body weight.
  • Orlistat (Xenical): Orlistat works by blocking the absorption of fat from the diet. It inhibits the enzyme lipase, which is responsible for breaking down dietary fats in the intestines. As a result, some of the fat you consume is not absorbed and is instead eliminated in the stool. Orlistat is typically used as part of a comprehensive weight management program that includes a reduced-calorie diet.

Expected Results and Timeline

The amount of weight loss you can expect to achieve with weight loss medications varies depending on the specific medication, your individual response to the treatment, and your adherence to a comprehensive weight management program. However, clinical trials have shown that many individuals can achieve significant weight loss with these medications.

With GLP-1 receptor agonists like semaglutide and tirzepatide, individuals may start to see noticeable weight loss within the first few weeks of treatment. The weight loss typically continues over several months, with maximum weight loss achieved after about 6-12 months. Studies have shown that individuals taking semaglutide can achieve an average weight loss of 15-17% of their initial body weight after 68 weeks. Tirzepatide has demonstrated even greater weight loss, with an average of 22.5% after 72 weeks.

With orlistat, weight loss is typically more gradual. Individuals may start to see some weight loss within the first few weeks of treatment, but the most significant weight loss is usually achieved after several months. Studies have shown that individuals taking orlistat can achieve an average weight loss of 5-10% of their initial body weight after 52 weeks.

Potential Side Effects

Like all medications, weight loss medications can cause side effects. The side effects vary depending on the specific medication. Some common side effects of GLP-1 receptor agonists include nausea, vomiting, diarrhea, constipation, and abdominal pain. These side effects are usually mild and temporary, but they can be bothersome for some individuals. It's important to start with a low dose of the medication and gradually increase the dose as tolerated to minimize the risk of side effects.

Orlistat can cause gastrointestinal side effects such as oily stools, flatulence, and fecal urgency. These side effects are due to the unabsorbed fat in the stool. To minimize these side effects, it's important to follow a reduced-fat diet while taking orlistat.

It's crucial to discuss the potential side effects of weight loss medications with your doctor before starting treatment. Your doctor can help you weigh the risks and benefits of the medication and determine if it's the right choice for you.

How Hi Doctor AI Helps

Hi Doctor AI offers a convenient and discreet way to access weight loss medications. Our EU-licensed doctors can provide online consultations to determine if weight loss medication is right for you. We offer prescriptions for medications like Wegovy (semaglutide), Mounjaro (tirzepatide), Saxenda (liraglutide), and Xenical/Orlistat.

Skip the waiting room and get a prescription in under 24 hours. The consultation fee is 45€, and you'll receive a full refund if no prescription is issued. Hi Doctor AI provides a safe, secure, and confidential platform for managing your health.

Ready to Get Started?

Ready to start your weight loss journey? Get your online consultation with Hi Doctor AI—EU-licensed doctors, 45€ consultation fee.

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Weight Loss Medication: What You Need to Know