Naltrexone Is an opioid receptor antagonist. ( an opioid is a chemical that works by binding to opioid receptors, this can find in the central nervous system and the gastrointestinal tract). This drug will oppose the effect of morphine, heroin, codeine, this type of drugs. This is the drug is act against endorphins (endorphins is the hormone produced in the brain this will help to reduce the pain)
Studies shows that low dose of Naltrexone can boost the immune system. Naltrexone hydrochloride usually available in markets brand names are Revia® Vivitrol®
Pregnant women should avoid this drug. Some people with liver or kidney disease may not be good candidates for using this medication.
Naltrexone causes side effects like nausea, anxiety, fatigue, and headaches, some others medication may experience dizziness and insomnia. Normal people can take Naltrexone without any serious side effects. May this drug will be toxic to the liver, because of this contraindication patients evaluate liver function before starting treatment as well as during treatment.