Comparisons

GLP-1 vs Contrave: Which Weight Loss Medication Is Right for You?

If you're exploring prescription weight loss options, you've likely come across both GLP-1 medications like semaglutide and tirzepatide, and Contrave. Both have FDA approval for weight management, but they work in completely different ways. Understanding these differences—from how they affect your body to what side effects you might experience—can help you and your healthcare provider determine the best path forward for your weight loss journey.

How GLP-1 Medications Work

GLP-1 medications mimic a natural hormone your body produces called glucagon-like peptide-1. This hormone plays several important roles in metabolism and appetite regulation.

When you take a GLP-1 medication, it works by slowing down how quickly food leaves your stomach, which helps you feel fuller longer. These medications also signal your brain to reduce appetite and help regulate blood sugar levels by stimulating insulin release when needed.

The most commonly prescribed GLP-1 medications include semaglutide (the active ingredient in Wegovy and Ozempic) and tirzepatide (found in Mounjaro and Zepbound). Tirzepatide actually works on both GLP-1 and GIP receptors, which may enhance its effectiveness for some people.

These medications are typically given as a once-weekly injection using a small, pre-filled pen. Most people find the injection process quick and relatively painless after the first few times.

How Contrave Works

Contrave takes a completely different approach. It's an oral medication that combines two existing drugs: naltrexone and bupropion.

Naltrexone was originally developed to treat alcohol and opioid dependence, while bupropion is an antidepressant that's also used for smoking cessation. Together, they work on brain pathways that control cravings and appetite.

The combination affects the hypothalamus (your brain's appetite control center) and the mesolimbic reward system (which influences how rewarding you find food). By modulating these pathways, Contrave aims to reduce food cravings and help you feel satisfied with less food.

Contrave comes as a tablet taken twice daily, with a gradual dose increase over the first month to minimize side effects.

Comparing Effectiveness: What the Research Shows

When it comes to weight loss results, GLP-1 medications generally show more significant outcomes in clinical trials.

Studies of semaglutide have demonstrated average weight loss of 15-20% of body weight over 68 weeks when combined with lifestyle changes. Tirzepatide has shown even more impressive results in some trials, with participants losing an average of 15-22% of their body weight depending on the dose.

Contrave, by comparison, typically results in more modest weight loss. Clinical trials show an average weight loss of about 5-10% of body weight over one year when combined with diet and exercise modifications.

It's important to remember that these are averages. Individual results vary widely based on factors like starting weight, adherence to the medication, lifestyle changes, and individual metabolic differences.

Gender Differences in Response

Research suggests women may experience slightly different responses to weight loss medications compared to men. Some studies indicate women may lose weight at a slower rate on GLP-1 medications but often achieve comparable total weight loss over time. Hormonal fluctuations, particularly during perimenopause and menopause, can also influence how women respond to weight loss treatments. Men typically have higher baseline metabolic rates and may see faster initial results, though both sexes benefit significantly from these medications when combined with lifestyle modifications.

Side Effects to Consider

GLP-1 medications and Contrave have distinctly different side effect profiles.

Common GLP-1 Side Effects

The most frequently reported side effects with GLP-1 medications are gastrointestinal:

Most people find these effects improve significantly after the first month as their body adjusts. Starting with a lower dose and increasing gradually helps minimize discomfort.

Common Contrave Side Effects

Contrave's side effects relate more to its effects on the central nervous system:

Because Contrave contains bupropion, it carries a black box warning about increased risk of suicidal thoughts and behaviors, particularly in young adults. It's also not appropriate for people with seizure disorders or uncontrolled high blood pressure.

Who Might Benefit from Each Option

GLP-1 medications may be particularly suitable if you have type 2 diabetes or prediabetes, as these medications offer blood sugar benefits beyond weight loss. They're also a good option if you prefer a once-weekly injection over daily pills, or if you've struggled with other weight loss medications in the past.

Contrave might be worth considering if you have a history of emotional eating or food cravings driven by stress or mood, as it specifically targets reward pathways. Some people also prefer an oral medication over injections, though this means remembering to take pills twice daily.

Neither medication is recommended during pregnancy or while breastfeeding. Your personal medical history, including any mental health conditions, seizure history, or cardiovascular issues, will help guide which option is safer for you.

Cost and Accessibility Considerations

Cost can be a significant factor in choosing between these medications.

Brand-name GLP-1 medications like Wegovy can be expensive without insurance coverage, often exceeding $1,000 per month. However, compounded versions of semaglutide and tirzepatide offer a more affordable alternative for many people.

Contrave is available as a generic (naltrexone/bupropion), which makes it more affordable for some patients. However, even generic pricing varies widely depending on your pharmacy and insurance coverage.

Insurance coverage differs significantly between plans. Some insurers cover these medications for weight loss, while others only cover them for diabetes management or may not cover them at all.

Making Your Decision

The choice between GLP-1 medications and Contrave isn't one-size-fits-all. The best option depends on your individual health profile, weight loss goals, medical history, lifestyle preferences, and budget.

GLP-1 medications offer more substantial weight loss results based on current research and provide additional metabolic benefits, particularly for blood sugar control. Contrave may be more appropriate for certain individuals based on their medical history or specific patterns around food cravings and reward-driven eating.

What matters most is finding an approach you can sustain long-term, as weight management is an ongoing journey rather than a destination. Working with a healthcare provider who understands your complete medical picture will help you make the most informed choice.

From the Ozari Care Team

Whichever medication you choose, remember that it works best as part of a comprehensive approach that includes nutrition, movement, sleep, and stress management. We often see the most successful outcomes when patients view medication as a tool that makes lifestyle changes more achievable, rather than a standalone solution. Your body's response in the first 8-12 weeks will provide valuable information about whether your chosen medication is the right fit.

At Ozari Health, we offer compounded semaglutide and tirzepatide starting at $99/month, prescribed by licensed physicians and shipped to your door. Learn more at ozarihealth.com.

Medically reviewed by the Ozari Clinical Care Team, licensed physicians specializing in metabolic health and GLP-1 therapy. Last reviewed: April 25, 2026.