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Naltrexone Related Somnolence

Official FDA Reports23
Social Media Events85
Active Ingredients
  • Naltrexone
Additional Drug Brands and Names
Additional Terms for Somnolence
  • Fatigue
  • Sleepiness
  • Drowsiness
  • Groggy
  • Very Sleepy
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  This report is for all products sharing this active ingredient. For more details, please use our Workbench for research on individual brands like Vivitrol.


The quarterly trend chart illustrates changing levels of adverse events over time. Results from both the FDA Adverse Event Database (AERS) and adverse events extracted from social media by Druginformer are plotted side-by-side for easy comparison.

List of Possible Side Effects Reported

Report Date Dosage Indication Outcome Country Gender Age Weight (lbs)

* DrugInformer calculates alarm using a proprietary algorithm. Alarm should not be taken as an ofiicial signal from the FDA or other regulatory entity.

Social Media Comments From Around the Web

The following are comments from users that experienced side effects while taking Milnacipran Hydrochloride


helps with pain fatigue and pain fog

Source:" Naltrexone

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Did the author experience somnolence while taking naltrexone?

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LDN has helped me greatly in many areas. Foot vibration stopped, fatigue less, and brain fog better. The only side effect was vivid dreaming in the beginning month.

Source:" LDN - Low Dose Naltrexone

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Did the author experience somnolence while taking naltrexone?

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helps with fatigue , no side effects

Source:" LDN - Low Dose Naltrexone

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Did the author experience somnolence while taking naltrexone?

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Tell us about your Experience with Naltrexone Related Somnolence

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Share Your Experience

Druginformer Identified Side Effects: Pain, Somnolence

Posted By Syn in fdb.rxlist.com on November 21, 2013 @ 12:00 am

I took this medication after my wisdom teeth were removed. It barely took the edge off my pain. But what it was effective at doing was making my body feel very heavy and and then put me to sleep. In e...

Druginformer Identified Side Effects: Anxiety, Cardiac flutter, Somnolence

Posted By Anonymous in drugs.com on November 1, 2013 @ 12:00 am

... I could pass 6-7 days without touching a single drop of alcohol. This medication has helped me rebuild my life. The side effects from Naltrexone are minor: tiredness and anxiety and sometimes heart ...

Druginformer Identified Side Effects: Fatigue, Somnolence, Decreased appetite

Posted By warren in fdb.rxlist.com on September 26, 2012 @ 12:00 am

i feel tired and sleepy, have loss of appetite

Druginformer Identified Side Effects: Disturbance in attention, Drug ineffective, Hip fracture, Somnolence

Posted By Anonymous in fdb.rxlist.com on September 2, 2012 @ 12:00 am

Tried this drug for arthritic hip pain prior to hip replacement surgery. Yuck, felt sleepy, foggy and didn't help the pain.

Druginformer Identified Side Effects: Back pain, Disorientation, Somnolence

Posted By ??not understood in fdb.rxlist.com on October 25, 2011 @ 12:00 am

It helps the back pain but also causes drowsiness, disorientatio

Druginformer Identified Side Effects: Pain, Discomfort, Somnolence

Posted By Gloria in fdb.rxlist.com on September 10, 2011 @ 12:00 am

I was placed on Vicodin after Darvocet-N was taken off the market. It is not NEARLY as effective in easing arthritic pain in my thumbs. I am frequently drowsy and wake groggy and uncomfortable after...

Druginformer Identified Side Effects: Pain, Somnolence, Abdominal discomfort

Posted By txdarlyn in fdb.rxlist.com on June 3, 2011 @ 12:00 am

Doesn't knock me out, like other pain medications. Also, doesn't make me feel sick to my stomach. Works better at relieving my pain.

Druginformer Identified Side Effects: Hypersomnia, Pain, Exostosis, Somnolence

Posted By painsux in fdb.rxlist.com on May 31, 2011 @ 12:00 am

... strips to keep it in place. After using this for almost 6 months, I have gone from the lowest dose to almost 100mcg. I find myself sleeping 12-17 hours a day, falling asleep while driving, my pa...

Druginformer Identified Side Effects: Somnolence

Posted By CherryKai2011 in fdb.rxlist.com on May 13, 2011 @ 12:00 am

... taking this medication for wisdom tooth pain, and let me tell you it works VERY well. I love how it takes away the pain within 15 min if I take it at the onset of pain, then it knocks me out so I dont...

Druginformer Identified Side Effects: Headache, Somnolence

Posted By Mary F. in fdb.rxlist.com on January 22, 2011 @ 12:00 am

Fibromyalgia, headaches and fatigue.

* Warning: The facts and figures contained in these reports are accurate to the best of our capability; however, our metrics are only meant to augment your medical knowledge, and should never be used as the sole basis for selecting a new medication. As with any medical decision, be sure to work with your doctor to ensure the best choices are made for your condition.

* About FAERS: The FDA Adverse Event Reporting System (FAERS) is used by FDA for activities such as looking for new safety concerns that might be related to a marketed product, evaluating a manufacturer's compliance to reporting regulations and responding to outside requests for information. Reporting of adverse events is a voluntary process, and not every report is sent to FDA and entered into FAERS. The FAERS database may contain duplicate reports, the report quality is variable, and many factors may influence reporting (e.g., media attention, length of time a drug is marketed, market share). For these reasons, FAERS case reports cannot be used to calculate incidence or estimates of risk for a particular product or compare risks between products.