Medications

Contrave vs. GLP-1 Medications: Which Is More Effective for Weight Loss?

Nuvo Health Team · 9 min read

Quick answer

Contrave (naltrexone + bupropion) is an oral weight loss pill that works on appetite and cravings through the brain. GLP-1 injections like Ozempic and Wegovy work differently — and produce dramatically different results. Here's the honest comparison.

With GLP-1 medications dominating headlines for their weight loss results, older approved medications like Contrave are getting a second look. Interest in Contrave has risen more than 120% in recent months, likely as people search for oral alternatives to weekly injections. This guide compares Contrave and GLP-1 medications head-to-head across the factors that matter most: how much weight you can expect to lose, how each works, and who each drug is best suited for.

What Is Contrave?

Contrave is a prescription weight management medication that combines two existing drugs: naltrexone (an opioid antagonist used for alcohol and opioid use disorder) and bupropion (an antidepressant also used to quit smoking). The combination is FDA-approved for chronic weight management in adults with a BMI ≥30, or BMI ≥27 with at least one weight-related condition.

The mechanism works primarily through the brain. Bupropion activates reward pathways and reduces appetite. Naltrexone blocks the feedback loop that normally blunts this appetite-suppressing effect, essentially prolonging and amplifying bupropion's action. Together, they reduce food cravings and may make it easier to resist comfort eating and high-calorie foods.

How GLP-1 Medications Work (Brief Recap)

GLP-1 receptor agonists — including semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound), and liraglutide (Saxenda) — mimic the gut hormone GLP-1, which is released after eating. They reduce appetite by acting on the hypothalamus, slow gastric emptying (so food stays in the stomach longer), and in the case of tirzepatide, also mimic GIP — another satiety hormone.

Weight Loss Comparison: Contrave vs. GLP-1 Drugs

This is where the data paints a clear picture. Average weight loss results from major clinical trials:

Contrave (COR-I trial, 56 weeks): ~6.1% total body weight loss vs. ~1.3% on placebo
Saxenda/liraglutide (SCALE trial, 56 weeks): ~8% total body weight loss
Ozempic/semaglutide 1 mg (SUSTAIN-6, 104 weeks): ~4.5% in diabetes patients
Wegovy/semaglutide 2.4 mg (STEP-1 trial, 68 weeks): ~14.9% total body weight loss
Zepbound/tirzepatide 15 mg (SURMOUNT-1, 72 weeks): ~20.9% total body weight loss

Put simply: Contrave produces meaningful but modest weight loss (typically 5–8% of body weight in real-world use). Wegovy and Zepbound produce 2 to 3 times more weight loss on average. For someone who weighs 220 lbs, that's the difference between losing about 13 lbs on Contrave vs. 30–45 lbs on a high-dose GLP-1.

Side Effects: Contrave vs. GLP-1s

Both medication classes have distinct side effect profiles.

Contrave side effects

Nausea — very common when starting (usually diminishes)
Headache and dizziness
Constipation
Insomnia and sleep disturbances (bupropion is activating)
Dry mouth
Increased heart rate and blood pressure
Seizure risk (rare, but a black box warning; bupropion lowers seizure threshold)
Black box warning: suicidal thoughts and behaviors (linked to bupropion; requires monitoring)

GLP-1 medication side effects

Nausea — very common, especially in early weeks
Vomiting
Diarrhea or constipation
Injection site reactions
Fatigue
Muscle loss (particularly if protein intake is insufficient)
Rare but serious: pancreatitis, gallbladder issues, thyroid C-cell tumors (in animal studies)

Who Contrave May Be Better For

Contrave has distinct advantages in certain situations, even given its lower average weight loss:

People who strongly prefer an oral pill over weekly injections
Those with strong food cravings or reward-driven eating patterns (Contrave specifically targets the brain's reward circuitry)
People who are not candidates for GLP-1 drugs due to personal or family history of thyroid cancer or pancreatitis
Patients with a history of alcohol or opioid use who are already on naltrexone (Contrave contains naltrexone)
Those with lower BMI or modest weight loss goals where the GLP-1 magnitude isn't necessary

Who Should NOT Use Contrave

People with uncontrolled hypertension (Contrave can raise blood pressure)
History of seizures or eating disorders (anorexia/bulimia — black box warning)
People taking opioid medications — naltrexone blocks opioid receptors
Pregnant or breastfeeding women
People currently using monoamine oxidase inhibitors (MAOIs)

Cost Comparison

Cost is often a deciding factor. Approximate monthly costs in the US without insurance (2026):

Contrave: $100–$200/month with manufacturer savings card or GoodRx coupons
Wegovy (semaglutide 2.4 mg): $1,300–$1,500/month without insurance
Zepbound (tirzepatide): $1,000–$1,200/month without insurance
Compounded semaglutide: $200–$500/month via telehealth platforms (availability varies)
Compounded tirzepatide: $250–$600/month via telehealth platforms

Contrave is significantly more affordable, especially with coupons. However, insurance coverage for GLP-1 drugs is expanding, and many employer plans now cover Wegovy or Zepbound. Always verify your specific plan.

Can You Take Contrave and GLP-1 Together?

Using Contrave and a GLP-1 medication simultaneously is not standard practice and has not been studied in clinical trials. Some physicians in obesity medicine may consider combinations in carefully selected patients, but there is no current evidence base supporting this approach. Do not attempt this without direct physician supervision.

The Verdict

If your primary goal is maximum weight loss and you can access GLP-1 medications, the clinical evidence strongly favors GLP-1 agonists — particularly Wegovy and Zepbound — for overall efficacy. Contrave remains a legitimate option, especially for people who want an oral medication, have craving-driven eating patterns, or cannot tolerate or access GLP-1 injections.

Neither medication works in isolation. Both produce their best results when combined with dietary changes, regular physical activity, and behavioral support. Talk to your doctor about which option fits your health profile, preferences, and goals — this is a decision that should be made with personalized medical guidance.