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Something went wrong on our side, please try again. Drug List Drug Wheel. Last published: November 10, What is naltrexone? How is it used? People who intend to start naltrexone maintenance treatment can expect to be tested to confirm that they are clear of opioid drugs. Naltrexone affects everyone differently, based on: The amount taken Size, weight and health of the person taking it Whether the person is used to taking it Whether other drugs are taken around the same time Side effects Naltrexone has few side effects, and these usually go away after the medication is taken for a few days.
Dose-related effects Large doses of naltrexone may cause liver damage. Supporting someone who is on a naltrexone program People who are taking naltrexone will need both emotional and practical support. Read more about treatment. Withdrawal People can stop taking naltrexone at any time.
They will not experience withdrawal symptoms. Naltrexone is only helpful when it is used as part of an addiction treatment program. It is important that you attend all counseling sessions, support group meetings, education programs, or other treatments recommended by your doctor.
Naltrexone will help you avoid using drugs and alcohol, but it will not prevent or relieve the withdrawal symptoms that may occur when you stop using these substances. Instead, naltrexone may cause or worsen withdrawal symptoms. You should not take naltrexone if you have recently stopped using opioid medications or opioid street drugs and are now experiencing withdrawal symptoms. Naltrexone will help you avoid drugs and alcohol only as long as you are taking it.
Continue to take naltrexone even if you feel well. Do not stop taking naltrexone without talking to your doctor.
This medication may be sometimes prescribed for other uses; ask your doctor or pharmacist for more information. Take the missed dose as soon as you remember it. However, if it is almost time for your next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one. Naltrexone may cause other side effects.
Call your doctor if you have any unusual problems while taking this medication. Keep this medication in the container it came in, tightly closed, and out of reach of children.
Store it at room temperature and away from excess heat and moisture not in the bathroom. It is important to keep all medication out of sight and reach of children as many containers such as weekly pill minders and those for eye drops, creams, patches, and inhalers are not child-resistant and young children can open them easily.
To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location — one that is up and away and out of their sight and reach. Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. If switching from methadone to naltrexone, the patient has to be completely withdrawn from the opioids.
Naltrexone blocks the euphoric and sedative effects of drugs such as heroin, morphine, and codeine. It works differently in the body than buprenorphine and methadone , which activate opioid receptors in the body that suppress cravings. Naltrexone binds and blocks opioid receptors and is reported to reduce opioid cravings.
There is no abuse and diversion potential with naltrexone. If a person relapses and uses the problem drug, naltrexone prevents the feeling of getting high. People using naltrexone should not use any other opioids or illicit drugs; drink alcohol; or take sedatives, tranquilizers, or other drugs.
Patients on naltrexone may have reduced tolerance to opioids and may be unaware of their potential sensitivity to the same, or lower, doses of opioids that they used to take.
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