Weight Loss
5.2.2025

What Drugs Make You Lose Weight?

Discover what drugs make you lose weight and how they work. Learn about prescription options and what you need to consider before starting medication.

You might have heard a lot of people talk about prescription medications for weight loss. And while the promise of these drugs seems enticing, you can’t help but wonder: Do they actually work? If you’re curious what drugs make you lose weight, you're tapping into a bigger shift happening in how doctors approach weight management. 

Today, it’s not just about diet and exercise alone. The right weight loss drug, along with lifestyle changes, can make a real difference for people dealing with obesity or extra weight that's tough to lose on their own.

In this blog, we’ll break down these drugs and how prescription options fit into the bigger picture of managing your health.

what drugs make you lose weight
Source: RR Wellness Clinic

Understanding Prescription Weight Loss Drugs

When looking into what drugs make you lose weight, it’s important to focus on medications that are specifically designed and approved for medical weight management. Prescription weight loss drugs are for individuals who have obesity or are significantly overweight, particularly when lifestyle changes like diet and exercise haven't been enough on their own.

Weight loss medications work in different ways: Some help control appetite, others affect how your body absorbs fat. However, all are meant to support broader health goals, not replace healthy habits. 

Because they can have serious effects on the body, these drugs are only available under a doctor’s supervision. A healthcare provider will determine if medication is appropriate for you, monitor your progress, and adjust the treatment plan as needed.

Common Weight Loss Drugs and How They Work

Not all prescription weight loss drugs work the same way. Some help you feel less hungry, others block fat from being absorbed, and a few help your body burn energy more efficiently. Depending on your health needs, your doctor might recommend one type over another or sometimes even a combination.

Here’s a closer look at the major types of medications used when you're exploring drugs to help you lose weight:

  • Appetite suppressants. These drugs target the parts of your brain that control hunger, helping you eat less without feeling constantly deprived.
  • Fat absorption inhibitors. Instead of changing how much you want to eat, these medications reduce how much fat your body absorbs from the food you eat.
  • Metabolic boosters. Some medications work by increasing your metabolism, helping you burn more calories at rest or during activity.
weight loss drug
Source: Freepik

Spotlight on GLP-1 Drugs for Weight Loss

When people ask what drugs make you lose weight, GLP-1 medications are often at the center of the conversation. These treatments were originally for type 2 diabetes but are now widely used for weight loss due to their impact on appetite and metabolism.

GLP-1 for weight loss works by mimicking a hormone that helps regulate blood sugar and signals to your brain that you're full. These drugs slow digestion, reduce hunger, and help people feel satisfied with less food, leading to gradual, sustainable weight loss when paired with lifestyle changes.

Here are some popular GLP-1 weight loss medications:

  • Semaglutide (Wegovy, Ozempic). How does semaglutide work? It targets appetite and blood sugar regulation by acting like natural GLP-1. Wegovy is approved for weight loss, with studies showing substantial body weight reduction. Ozempic contains the same active ingredient and is often prescribed off-label for similar results.
  • Liraglutide (Saxenda). This daily injection works similarly to semaglutide but is shorter-acting. Saxenda has been on the market longer and may be used when weekly injections aren’t preferred.

Tirzepatide, a newer drug, targets both GLP-1 and GIP receptors, enhancing appetite suppression and blood sugar control. Though not strictly a GLP-1 drug, it’s become a leading option for weight loss, with results sometimes exceeding those of semaglutide.

Other Prescription Drugs That May Cause Weight Loss

While GLP-1 medications are prominent in weight management, several other prescription drugs can aid in weight loss through different mechanisms:

  • Phentermine. This is an appetite suppressant that stimulates the central nervous system, reducing hunger sensations. It's typically prescribed for short-term use (up to 12 weeks) in individuals with obesity who haven't achieved weight loss through diet and exercise alone. 
  • Bupropion/Naltrexone (Contrave). It’s a combination medication that targets areas of the brain involved in hunger and cravings. Bupropion is an antidepressant, and naltrexone is used for addiction treatment; together, they help control appetite and reduce food cravings. ​
  • Orlistat (Alli, Xenical). This is a lipase inhibitor that works by preventing the absorption of the fat consumed in the diet. This unabsorbed fat is then eliminated from the body, aiding in weight loss. Orlistat is available over-the-counter (Alli) and by prescription (Xenical).
GLP-1 for weight loss
Source: RR Wellness Clinic

Important Considerations and Risks

While prescription medications can help support weight loss, they’re not a “magic pill.” Even with drugs like GLP-1 agonists or appetite suppressants, lifestyle changes (e.g., healthy eating, regular exercise, and behavior adjustments) are still essential for long-term success.

Like any medication, weight loss drugs can come with potential side effects. These may include: 

  • Nausea
  • Digestive issues
  • Headaches
  • Increased heart rate
  • More serious concerns, depending on the drug and your health history

Some medications also haven't been studied for very long-term use, so their risks over many years are still being evaluated.

That’s why medical supervision is critical when using prescription weight loss treatments. A healthcare provider can help determine the right medication for you, monitor your progress, manage any side effects, and adjust your plan as needed to keep your health and safety the top priority.

prescription weight loss
Source: Freepik

Conclusion

If you’ve been wondering what drugs make you lose weight, the answer is that several prescription options, especially GLP-1 medications like semaglutide and liraglutide, can help support meaningful weight loss when combined with healthy lifestyle changes. Other treatments like phentermine, Contrave, and orlistat also offer additional options, depending on your needs.

While these medications can be powerful tools, they work best with proper medical guidance, realistic expectations, and a commitment to long-term health habits.

Ready to explore your options and find out if a weight loss medication could be right for you? We at RR Wellness Center are a message away. Contact us today to book a personalized consultation!

Reviewed by:

Tyler Coe

I have been working as a nurse practitioner for over 9 years, my primary background is in Emergency Medicine, as well as primary care, behavioral health, and addiction medicine. I feel that practicing medicine is a privilege, which allows me to be part of individuals' lives in their most vulnerable state, in hopes that I can provide the support, compassion, and care they deserve.
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