Zepbound vs. Contrave
See how Zepbound and Contrave compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Zepbound is a once-weekly injectable that's FDA-approved for both weight management and moderate-to-severe obstructive sleep apnea, while Contrave is a twice-daily pill approved only for weight management.
Both drugs are meant to be used alongside a reduced-calorie diet and exercise, but they work through very different mechanisms and carry different warning labels.
Contrave carries a boxed warning for suicidal thoughts and behaviors tied to its bupropion component, a risk that Zepbound's GLP-1/GIP mechanism does not carry.
Zepbound vs. Contrave Drug Summary
Zepbound
Zepbound (tirzepatide) is a GIP and GLP-1 receptor agonist injected once a week. It's approved to treat chronic weight management in adults with obesity or overweight plus a weight-related condition, and separately for moderate-to-severe obstructive sleep apnea in adults with obesity. Dosing starts at 2.5 mg and is increased every four weeks up to a maximum of 15 mg weekly.
Contrave
Contrave combines naltrexone, an opioid antagonist, with bupropion, an antidepressant, in one extended-release tablet. It's approved for chronic weight management in adults with obesity or overweight plus a weight-related condition, taken twice daily. The dose is increased over three weeks up to the full maintenance dose of 16 mg/180 mg twice daily.
Zepbound vs. Contrave Side Effects
Zepbound
Contrave
Zepbound vs. Contrave Dosage
Zepbound
Contrave
| STAGE | DOSE | WHEN |
| Starting dose | 2.5 mg once weekly | Weeks 1-4 |
| Maximum dose | 15 mg once weekly | Week 21 onward |
| Dose changes | 5 increases | Every 4 weeks |
| STAGE | DOSE | WHEN |
| Starting dose | 8 mg/90 mg once daily | Week 1 |
| Maximum dose | 16 mg/180 mg twice daily | Week 3 onward |
| Dose changes | 2 increases | Every week |
Zepbound
| STAGE | DOSE | WHEN |
| Starting dose | 2.5 mg once weekly | Weeks 1-4 |
| Maximum dose | 15 mg once weekly | Week 21 onward |
| Dose changes | 5 increases | Every 4 weeks |
Contrave
| STAGE | DOSE | WHEN |
| Starting dose | 8 mg/90 mg once daily | Week 1 |
| Maximum dose | 16 mg/180 mg twice daily | Week 3 onward |
| Dose changes | 2 increases | Every week |
Zepbound vs. Contrave Indications
Zepbound
Zepbound is FDA-approved for two separate uses: long-term weight management in adults with obesity, or overweight with a weight-related condition, and treatment of moderate-to-severe obstructive sleep apnea in adults with obesity. Both uses require pairing the medication with a reduced-calorie diet and increased physical activity.
Chronic weight management in obesity or overweight plus comorbidity
Moderate-to-severe obstructive sleep apnea with obesity
Used with reduced-calorie diet and increased exercise
Not for use with other tirzepatide or GLP-1 products
Contrave
Contrave is FDA-approved for chronic weight management in adults with obesity, or overweight with at least one weight-related condition. It is not approved for depression, other psychiatric conditions, or smoking cessation, even though its individual ingredients are used for those purposes elsewhere. It must be paired with a reduced-calorie diet and increased physical activity.
Chronic weight management in obesity or overweight plus comorbidity
Not approved for depression or other psychiatric disorders
Not approved for smoking cessation
Used with reduced-calorie diet and increased exercise
Zepbound vs. Contrave Pros and Cons
Zepbound
Zepbound is a highly potent injectable that also carries a distinct FDA approval for obstructive sleep apnea, something Contrave does not offer. Insurance coverage for weight-loss GLP-1 injections is inconsistent, so out-of-pocket cost can be a real barrier despite strong clinical results.
Pros
Only weight-loss drug also FDA-approved for sleep apnea
Once-weekly dosing means fewer doses per month
Strong average weight loss shown in clinical trials
No boxed warning for suicidal thoughts
Cons
Requires self-injection instead of a pill
Longer titration schedule, about 20 weeks to max dose
Costs roughly $1,050 to $1,100 a month before insurance, more than Contrave
Common GI side effects like nausea and diarrhea
Contrave
Contrave offers an oral alternative for people who want to avoid injections, with a much shorter titration period than Zepbound. Its bupropion component carries a boxed warning for suicidal thoughts, and it has more contraindications to screen for before starting.
Pros
Oral tablet, no injections needed
Shorter titration, full dose reached in 3 weeks
Costs roughly $750 to $840 a month before insurance, less than Zepbound
Available since 2014, longer real-world track record
Cons
Boxed warning for suicidal thoughts and behaviors
Contraindicated with seizure disorders, uncontrolled hypertension, and opioid use
Generally produces less weight loss than GLP-1 injectables
Higher nausea rate than Zepbound in trials
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