Naltrexone

Uses of Naltrexone

Naltrexone is commonly used to treat Opioid Dependence and Alcohol Addiction.

How Naltrexone Works

Naltrexone inhibits the action of opioids by acting as a competitive inhibitor at the opioids receptor site. This action precipitates opioids withdrawal symptoms in opioids dependent individuals.

Side Effects of Naltrexone

Pain in the abdomen, Nausea & Vomiting, Diarrhea, Constipation, Feeling anxious, Insomnia, Headache, Muscle pain, Chest pain, Chills, Dizziness

Information About Naltrexone

Naltrexone is an opioid receptor antagonist used to treat opioid dependence, alcohol dependence, and as an adjunct for weight management in Singapore. Available as a 25mg–50mg oral tablet taken once daily, it is HSA-registered and available on prescription only in Singapore. Patients must be completely opioid-free for at least 7–10 days before initiation as naltrexone precipitates immediate and severe acute opioid withdrawal in opioid-dependent individuals — a naloxone challenge test is recommended before starting therapy. A valid doctor's consultation is required before dispensing. Order Naltrexone online at DoctorOnCall Singapore with same-day delivery available. Speak to a DoctorOnCall physician today to check if Naltrexone is right for you.


Naltrexone is a medication commonly used to support the treatment of alcohol dependence and opioid dependence by helping reduce cravings and prevent relapse. It works by blocking opioid receptors in the brain, which reduces the rewarding effects of alcohol and opioids. Naltrexone belongs to a class of medications known as opioid antagonists and is widely used in addiction medicine and behavioural health care. Find affordable Naltrexone options from trusted brands at DoctorOnCall.

Conclusion

Consult our doctors online for safe and effective use of Naltrexone tailored to your health needs. Find the best prices for affordable Naltrexone tablets and long-acting injectable formulations at DoctorOnCall Singapore.


Warnings

Kidney High Risk

Naltrexone is contraindicated in patients with severe kidney impairment

Alcohol Not Advisable

Naltrexone is used to treat alcohol addiction. Taking Naltrexone with alcohol will accentuate the withdrawal symptoms of opioids and makes the patients feeling worst.

Pregnancy Not Safe

Study of Naltrexone administration in the animal has shown some adverse effects to the pregnant mother and embryo. However, no controlled studies had been done in humans. Administration of this medication during pregnancy should only be done only if the benefits outweigh the risks.

Driving Not advisable

Naltrexone may cause a significant effect on the psychological & physical abilities of the user. Therefore avoid driving or operating machines while taking this medication.

Liver Limited Data

Naltrexone is contraindicated in patients with severe liver impairment

Lactation Limited Data

No data are available for the safety of Naltrexone use during breastfeeding. It is unknown whether this medication is excreted in breast milk. It is not recommended to use this medication while breastfeeding.

Written by

Dr. Adeline Carol Peters

, Bachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)

Reviewed by

Dr. Mohd Izzat Amir Bin Awang

, Doctor of Medicine (MD), University of Mansoura - Manchester