About naltrexone

Naltrexone  is a strong and highly specific opiate antagonist.

Naltrexone binds to opiate receptors and prevents from penetration of heroin, methodon, codeine, dentoxile and other opiates thereto. Owing to this effect opiates administrated in the body do not produce their specific effect (euphoria, miotic pupils etc.).

Thus, patient taking Naltrexone in doses prescribed by doctor cannot have narcotic intoxication if takes heroin or other opiates in.   

Usual administration regime of Naltrexone is 1 tablet (50 mg) 1 times a day. Other administration regimes are also possible: 2 tables every other day or 3 tablets one time every third days.

Clinical studies prove safe administration of Naltrexone in the above-mentioned doses. Naltrexone does not provoke dependence or any addiction.

Usual duration of Naltrexone therapy is 1 year. Minimum duration is 6 months.


Attention: Attempted intake of heroin or other opiates during treatment with Naltrexone may lead to overdosing and death.

If you have passed detoxication course and administrated Naltrexone for some time, Your resistance to opiates reduced much. So called “usual doses” may lead to death!

Administration of Naltrexone to patients not passed detoxication causes during 5-20 minutes extremely heavy manifestations of abstinence: nausea, vomiting, convulsions, muscle pains, aches in waist and joints, tachycardia, cardiac rhythm impairment. Acute psychosis is possible.

Sometimes, these manifestations are so much pronounced that it becomes necessary to hospitalise a patient to the department of intensive care.