Naltrexone (ReVia) is an opioid antagonist. It's used to treat opioid use disorder and alcohol use disorder in adults. Naltrexone (ReVia) is just one part of a comprehensive treatment plan that should also involve psychotherapy and support groups. Naltrexone (ReVia) is a tablet that's taken by mouth, typically once daily. Some common side effects of naltrexone (ReVia) include nausea, headache, and trouble sleeping. Brand name ReVia has been discontinued; naltrexone tablet is only available as a generic medication.
Drinking alcohol or taking opioids can trigger the body to release dopamine, a chemical in the body that makes you feel good. Taking these substances repeatedly to feel pleasure can cause the body to become dependent on them.
Naltrexone (ReVia) is an opioid antagonist that blocks the body's opioid receptors. In doing so, naltrexone (ReVia) blocks the rewarding effects of alcohol or opioids. This can help lower cravings for alcohol or opioids.
The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Alcohol use disorder
Opioid use disorder Reported by 10% or more people during clinical trials:
Contact your healthcare provider immediately if you experience any of the following.
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Less common
Skin rash
Rare
Abdominal or stomach pain (severe)
blurred vision, aching, burning, or swollen eyes
confusion
discomfort while urinating or frequent urination
hallucinations or seeing, hearing, or feeling things that are not there
mental depression or other mood or mental changes
ringing or buzzing in the ears
shortness of breath
swelling of the face, feet, or lower legs
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
Abdominal or stomach cramping or pain (mild or moderate)
anxiety, nervousness, restlessness or trouble sleeping
headache
joint or muscle pain
nausea or vomiting
unusual tiredness
Less common
Chills
cough, hoarseness, runny or stuffy nose, sinus problems, sneezing, or sore throat
dizziness
fast or pounding heartbeat
increased thirst
irritability
loss of appetite
sexual problems in males
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
No, naltrexone (ReVia) isn't a controlled substance because it doesn't have a risk of addiction, misuse, or dependence. Naltrexone (ReVia) is an opioid antagonist that blocks the effects of opioids and alcohol.
It takes about 3 days for most of naltrexone (ReVia) to leave your body after a single dose. This time-frame is estimated based on the half-life of naltrexone (ReVia). Ask your healthcare team if you have more questions about how long naltrexone (ReVia) stays in your system.
How long the side effects of naltrexone (ReVia) last depends on what symptoms you're experiencing. Some of the most common side effects of naltrexone (ReVia) include nausea and headache. While they can be bothersome, your healthcare team can recommend ways to help you manage them. For example, staying hydrated and relaxing through breathing exercises can help ease headaches. And avoiding greasy and spicy foods, or eating smaller meals more frequently throughout the day can minimize nausea. But if none of these methods work, talk with your care team about medication options that might help with headaches or nausea. If you have a question about any specific naltrexone (ReVia) side effect, discuss it with your healthcare team.
Naltrexone (ReVia) isn't known to cause weight loss as a side effect. In clinical studies, less than 1% of people using naltrexone (ReVia) for opioid use disorder reported both weight gain and weight loss. But it's unclear whether the changes in body weight is linked to naltrexone (ReVia) or other factors, such as substance use disorder.
Take naltrexone (ReVia) as directed by your healthcare team. In general, there isn't a specific time when you need to take naltrexone (ReVia) for it to work well. But your care team might ask you to take it at a certain time, depending on what side effects you experience. For example, if you feel sleepy and dizzy after a dose, you might take naltrexone (ReVia) at night. But if you have trouble sleeping, then you might need to take it in the morning. Talk with your healthcare team if you're not sure about when to take naltrexone (ReVia).
Naltrexone (ReVia) treats alcohol use disorder by lowering the urge to drink alcohol. But it won't be able to help with symptoms of alcohol withdrawal, such as restlessness, vomiting, or tremors. If you experience alcohol withdrawal, it's important to get medical help immediately because it can become life-threatening. Anyone going through alcohol withdrawal should be monitored by a medical team for serious symptoms, such as hallucinations and seizures, so they can receive treatment quickly.
No, naltrexone (ReVia) isn't the same as naloxone (Narcan). Both naltrexone and naloxone work by blocking opioid receptors, but they're FDA-approved to treat different conditions. Naltrexone is used to treat opioid and alcohol use disorders, whereas naloxone is used to reverse an opioid overdose in emergency situations. Talk with your healthcare team if you have questions about either medications.
Naltrexone (ReVia) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
When you take naltrexone (ReVia) for opioid use disorder, your body becomes more sensitive to opioids after you finish treatment. If you take opioids again, you can experience life-threatening side effects, even at doses that didn't cause harm before.
If you have or develop a condition where your healthcare team is considering treating you with opioid medications, let them know that you've received naltrexone (ReVia) treatment in the past. They might need to prescribe non-opioid alternatives. Or they might prescribe a much lower dose of opioid along with naloxone in case you experience life-threatening side effects.
Call 911 right away if you experience symptoms of an opioid overdose, such as extremely slowed breathing, extreme sleepiness, slow heartbeat, and cold or clammy skin.
If you've been taking opioid medications, starting naltrexone (ReVia) can cause serious withdrawal symptoms, including nausea and vomiting, sweating, and agitation. These symptoms can start within 5 minutes after you take naltrexone (ReVia) and last for 2 days or longer, depending on what type of opioid you've been taking.
To lower the risk of opioid withdrawal, your healthcare team will work with you to safely stop all opioid medications for 7-10 days before starting naltrexone (ReVia). If needed, they might ask you to start naltrexone (ReVia) in a hospital setting so that a care team can monitor and treat you for any severe withdrawal symptoms. If you experience withdrawal symptoms at home, go to the hospital right away to get appropriate treatment.
If you're taking naltrexone (ReVia) for alcohol use disorder, it's important that you let your healthcare team know if you've taken any opioid medications before starting naltrexone (ReVia).
Though rare, it's possible that naltrexone (ReVia) might cause liver problems. Make sure to discuss your entire medical history with your healthcare team before starting this medication. They might want to monitor your liver enzymes more closely if you have a history of liver problems. Call a healthcare professional right away if you notice any symptoms of liver damage. These symptoms can include tiredness, dark urine, upset stomach, stomach pain, or yellowing of the skin or whites of the eyes.
Some people have reported feeling depressed or having thoughts of suicide or self-harm while taking naltrexone (ReVia). But it's unclear whether these changes in mood are caused by naltrexone (ReVia) or by other factors. Let your healthcare team know right away if you or a loved one notices a change in your mood. Get medical attention right away if you experience severe depression or have any thoughts of hurting yourself.
| Dosage | Quantity | Price as low as | Price per unit |
|---|---|---|---|
| 50mg | 30 tablets | $29.11 | $0.97 |
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Contraindications are specific health conditions or situations in which a person should not take a medication due to safety concerns. If you have any of the following conditions or if any of the following apply to you, let your healthcare provider know because Naltrexone (ReVia) will not be safe for you to take.