Contrave

Contrave is an oral, twice-daily weight-management medication that combines two long-established drugs — bupropion and naltrexone — in an extended-release tablet. Unlike the injectable GLP-1 drugs, it is a pill, and it works mainly by curbing appetite and food cravings through effects on the brain’s appetite-control and reward systems. It is intended for long-term use with a reduced-calorie diet and more physical activity.

Contrave belongs to the Weight-Loss Medications class of medications. Combines bupropion (a dopamine/norepinephrine reuptake inhibitor) and naltrexone (an opioid antagonist) to act on the hypothalamic appetite center and reward system, reducing hunger and food cravings. Understanding how Contrave works helps explain both its therapeutic benefits and its characteristic side-effect profile, and it is the reason clinicians monitor specific parameters during treatment.

## What Contrave is used for

Contrave is prescribed for Chronic weight management, Weight loss in obesity. Contrave is approved for adults with a BMI of 30 or higher, or 27 or higher with a weight-related condition such as high blood pressure, type 2 diabetes, or high cholesterol. Treatment is reassessed at 12 weeks on the full dose: if at least 5% of body weight has not been lost, it is usually discontinued. Your prescriber decides whether Contrave is appropriate based on your diagnosis, other medical conditions, current medications, and treatment goals. Contrave is available by prescription only and has been FDA-authorized since 2014.

## Dosage and administration

Typical adult dosing: Titrate over 4 weeks to the maintenance dose of two tablets (8 mg naltrexone/90 mg bupropion each) twice daily. Discontinue if 5% weight loss is not achieved by week 12.

Contrave is titrated up over four weeks — starting at one tablet each morning and building to two tablets twice daily — to improve tolerability. Tablets are swallowed whole (not cut, chewed, or crushed) and are best avoided with high-fat meals, which can increase the risk of seizures. Never change your dose or stop Contrave without speaking to your prescriber. Dose adjustments may be needed for older adults, low body weight, kidney or liver impairment, or when Contrave is combined with interacting drugs. Available forms include Oral extended-release tablet, in strengths of 8 mg/90 mg.

## Side effects

Like all medicines, Contrave can cause side effects, though many people tolerate it well. Common side effects include Nausea, Constipation, Headache, Vomiting, Dizziness, Insomnia, Dry mouth. These are often mild and tend to settle as your body adjusts. Serious side effects that warrant prompt medical attention include Suicidal thoughts/behavior (boxed warning), Seizures, Increased blood pressure/heart rate, Severe allergic reactions, Liver injury. Nausea, constipation, headache, and insomnia are common. Because it contains the antidepressant bupropion, Contrave carries a boxed warning about suicidal thoughts and behaviors and can lower the seizure threshold. It must not be used with opioids, in uncontrolled hypertension, seizure disorders, or eating disorders. Seek emergency care for signs of a severe allergic reaction — hives, swelling of the face or throat, or difficulty breathing.

## Managing common side effects

Many of the common effects of Contrave can be eased with simple self-care while your body adjusts:

• Nausea: eat smaller, more frequent meals, avoid greasy or very rich foods, and rise slowly.
• Constipation: increase fiber and fluids, stay physically active, and ask your pharmacist about a stool softener.
• Headache: stay hydrated, rest, and use a simple analgesic if your clinician agrees it is safe for you.
• Vomiting: sip clear fluids, eat bland foods, and contact your clinician if you cannot keep liquids down.
• Dizziness: stand up slowly, avoid sudden position changes, and do not drive until you know how you react.
• Insomnia: take the dose earlier in the day if advised, and keep a consistent, screen-free bedtime routine.
• Dry mouth: sip water often, chew sugar-free gum, and maintain good oral hygiene.

If any side effect is severe, does not improve, or interferes with daily life, contact your healthcare provider rather than stopping Contrave on your own.

## Warnings and precautions

Before starting Contrave, tell your healthcare provider about all your medical conditions and every medication, supplement, and herbal product you take. Key precautions: Boxed warning: suicidal thoughts and behaviors with antidepressant component (bupropion); Contraindicated in uncontrolled hypertension, seizure disorders, eating disorders, and chronic opioid use; Do not use with other bupropion products. Contrave is not suitable for everyone, and certain conditions make it unsafe. During pregnancy, Contrave carries a labeled status of "Contraindicated"; discuss the risks and benefits with your clinician if you are pregnant, planning pregnancy, or breastfeeding.

## Drug interactions

Contrave can interact with Opioids (major) — Naltrexone blocks opioids; risk of precipitated withdrawal and overdose if opioids are used; MAO inhibitors (major) — Contraindicated; hypertensive risk; Other bupropion-containing products (major) — Increased seizure risk. Interactions are an important reason to keep your care team informed of every product you use. Because interactions can reduce effectiveness or raise the risk of harm, keep an up-to-date medication list and have your pharmacist run an interaction check whenever a new drug is added.

## Cost, coverage, and savings

Out-of-pocket cost for Contrave varies widely depending on insurance, pharmacy, and whether a generic is available. Contrave is brand-only; the manufacturer offers a savings program and a "Contrave coupon" or cash-pay option that many patients look for, since insurance coverage of weight-loss drugs is inconsistent. Patients commonly look for a contrave copay card, manufacturer savings card, or patient assistance program to lower cost; the manufacturer's official site and your pharmacist are the most reliable sources for current offers. Comparing cash prices across pharmacies and discount programs can also produce meaningful savings.

## How Contrave compares to alternatives

Contrave is an oral alternative to the injectable GLP-1 weight-loss drugs (Wegovy, Saxenda, Zepbound), which generally produce greater average weight loss but require injections and are often costlier. Contrave may appeal to people who prefer a pill or who also struggle with cravings. The "best" option is individual: it depends on your condition, response, tolerability, other medicines, insurance coverage, and dosing convenience. Discuss alternatives with your prescriber rather than switching on your own, and never stop a prescribed medicine abruptly unless told to.

## Monitoring and lifestyle

Treatment with Contrave works best alongside follow-up and healthy habits. Blood pressure and heart rate are checked, especially early in treatment, along with mood and weight progress toward the 12-week milestone. A balanced diet, regular physical activity appropriate to your health, adequate sleep, limited alcohol, and not smoking all support better outcomes and may improve how well Contrave works. Keep scheduled appointments and laboratory tests so your clinician can confirm the medicine is helping and catch any problems early.

## What to expect from treatment

Knowing the timeline helps set realistic expectations. Contrave is typically absorbed with peak ~2 hours (naltrexone), ~3 hours (bupropion), and has an elimination half-life of about naltrexone ~5 h; bupropion ~21 h, which shapes how often you dose it and how quickly it leaves your system if stopped. Some people notice effects early, while for others the full benefit of Contrave builds over weeks of consistent use. Success is measured against your personal treatment goals — whether that is better disease control, fewer symptoms, or reduced long-term risk — so keep your follow-up appointments so progress can be confirmed objectively rather than by guesswork.

## Before you start Contrave

A thorough pre-treatment review helps Contrave work safely. Tell your prescriber about heart, liver, or kidney problems, any history of allergic reactions, and whether you are pregnant or breastfeeding. Bring a complete list of prescription drugs, over-the-counter products, vitamins, and herbal supplements so interactions can be screened. Your clinician may order baseline tests and will set clear goals and a follow-up plan before you begin Contrave. Ask what results to expect, how long until the medicine takes effect, and which symptoms should prompt a call.

## Missed dose and overdose

If you miss a dose of Contrave, take it as soon as you remember unless it is almost time for the next dose — in that case skip the missed dose and continue your regular schedule. Do not double up to make up for a missed dose. If you suspect an overdose or someone has taken too much, contact your local poison control center or emergency services immediately. Using a pill organizer, phone reminder, or refill-reminder service helps maintain consistent dosing, which is important for Contrave to work properly.

## Use in specific populations

Pregnancy and breastfeeding: Contrave carries a labeled status of "Contraindicated." Tell your clinician if you are pregnant, may become pregnant, or are breastfeeding so the safest plan can be chosen. Older adults may be more sensitive to side effects and sometimes need lower doses or closer monitoring. Kidney or liver impairment can change how Contrave is handled by the body and may require dose adjustment. Children and adolescents should use Contrave only when specifically indicated and supervised by an appropriate specialist.

## When to contact your doctor

Contact your healthcare provider if your symptoms do not improve, if side effects are persistent or troubling, or if you have new symptoms after starting Contrave. Call emergency services for chest pain, trouble breathing, fainting, severe bleeding, sudden severe headache, or signs of a serious allergic reaction. Do not stop Contrave on your own — abrupt discontinuation of some medicines can cause rebound effects or loss of disease control.

## Storage and handling

Store at room temperature, 20–25°C (68–77°F). Keep Contrave in its original container, out of the reach of children and pets, and away from excess heat and moisture. Check the expiration date before use and do not use a product that looks discolored or damaged. Dispose of unused or expired medicine safely through a pharmacy take-back program rather than flushing it, unless the label specifically instructs otherwise.

## Clinical evidence and effectiveness

The COR (Contrave Obesity Research) trials showed greater weight loss than placebo over a year, with improvements in waist circumference and some metabolic markers. The degree of benefit varies from person to person, and real-world results depend on consistent use, adherence to the rest of your treatment plan, and individual factors such as other conditions and medications. Ongoing post-marketing surveillance continues to refine what is known about Contrave's long-term safety and effectiveness, and clinical guidelines are updated as new evidence emerges. Your prescriber can explain what the evidence means for your specific situation and what improvement is realistic to expect.

## Tips for getting the most from Contrave

Consistency is the single most important factor: take Contrave at the same time and in the same way each day, and refill before you run out to avoid interruptions. Keep a simple symptom-and-side-effect diary for the first weeks so you and your clinician can judge how well it is working. Store the medicine correctly, never share it with others, and bring it (or a current list) to every medical appointment. If cost or access is a barrier, raise it early — pharmacists can often suggest generics, manufacturer programs, or therapeutic alternatives that keep you on track.

## Frequently asked questions about Contrave

How much weight can you lose on Contrave?

In trials, adults lost about 5–9% of body weight on average over a year with diet and exercise. Results vary.

Can I take Contrave with opioids?

No. The naltrexone component blocks opioids and can precipitate withdrawal; chronic opioid use is a contraindication.

## Key takeaways

To summarize the most important points about Contrave (naltrexone/bupropion):

• Contrave is a weight-loss medications prescribed for chronic weight management and weight loss in obesity.
• Take it exactly as directed; do not change the dose or stop without medical advice.
• Watch for serious effects such as suicidal thoughts/behavior (boxed warning) and seizures, and seek help promptly if they occur.
• Keep an up-to-date medication list so your pharmacist can screen for interactions before any new medicine is added.
• Ask your pharmacist about copay cards, savings programs, and the lowest-cost pharmacy option if cost is a concern.
• Attend follow-up appointments so your clinician can confirm Contrave is working and adjust treatment if needed.

## Medical disclaimer

This article about Contrave (naltrexone/bupropion) is for general education and is not a substitute for professional medical advice, diagnosis, or treatment. Always follow the guidance of your physician or pharmacist and the instructions on your prescription label. Information may change as new evidence emerges.