Drugs Home > Naltrexone

When and How to Take This Medicine

Some general considerations to keep in mind during treatment with naltrexone include the following:
  • This medication comes in the form of a tablet. It is usually taken by mouth once a day.
  • Try to take your naltrexone dose at the same time each day to keep an even level of the medication in your bloodstream.
  • You should not take naltrexone if you have taken opioid medications in the previous 7 to 10 days.
  • You can take naltrexone with or without food. Try taking it with food if it upsets your stomach.
  • You should carry a medical ID card or wear a medical bracelet indicating you take naltrexone. It is very important that healthcare providers who treat you, including emergency providers, know you are taking this drug. 
  • For the medication to work properly, it must be taken as prescribed. Do not take more of it or stop taking it without your healthcare provider's approval.

Dosing Information for Naltrexone

The naltrexone dose your healthcare provider recommends will vary, depending on a few factors, including:
  • Why you are taking naltrexone
  • How you respond to it
  • Whether you will be taking the medication on your own or if someone else will be giving it to you.
As is always the case, do not adjust your dosage unless your healthcare provider specifically tells you to do so.
(Click Naltrexone Dosage for more information.)

Drug Interactions

Naltrexone may react with a few other medicines (see Drug Interactions With Naltrexone).
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
List of references (click here):
Other Articles in This eMedTV Presentation

Topics & Medications


Related Channels

eMedTV Links
Copyright © 2006-2019 Clinaero, Inc.

eMedTV serves only as an informational resource. This site does not dispense medical advice or advice of any kind. Site users seeking medical advice about their specific situation should consult with their own physician. Click Terms of Use for more information.

This site complies with the HONcode standard for trustworthy health information:
verify here.