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Popular Brands: : Baclofen, Lioresal, Gablofen, Apo-baclofen, Clofen
Official FDA Reports142,104
Social Media Events1,320
Total Posts3,707
Avg. Review Score3.70/ 5
Active Ingredients
  • Baclofen
Brands and Other Names
Show more brands
  • Mallinckrodt Inc
  • Novartis Pharmaceuticals Corp
  • Ucb Inc
  • Usl Pharma Inc

  This report is for all products sharing this active ingredient. For more details, please use our Workbench for research on individual brands like Baclofen.

* Extracted from FDA Adverse Event Report


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

The proportion of people completing user reviews who complained about a side effect.

The proportion of social media adverse event complaints for each adverse event type.

The proportion of FAERS (FDA) adverse event complaints for each adverse event type.

Baclofen Side Effects

  Social Media
(Online Comments)
(Reports Submitted to FDA)
Side Effect On Drug
Reports % of
Alarm Reports % of

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

User Voices

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


... (brand name: Lioresal), which is a muscle-relaxant and anti-spasticity drug commonly used in MS. When I first tried taking it, I couldn't tolerate the excessive sleepiness and generalized "out-of-it"...

Source: Baclofen-Muscle-Relaxer-review-6f222

View full report on Baclofen related hypersomnia

Did the author experience hypersomnia while taking baclofen?

What is this?

Thought Blocking

may impair your thinking , Makes me sleepy Baclofen is great for muscle spasm, Effective treatment for spasticity Stops Spasticity, But Makes Me Sleepy Multiple Sclerosis i...

Source: Baclofen-Muscle-Relaxer-review-6f222

View full report on Baclofen related thought blocking

Did the author experience thought blocking while taking baclofen?

What is this?


I have been blessed with the Baclofen pump. The pump has made a remarkable difference in the spasticity of my lespacgs. Decreased the tremors significantly. No noticeable side effects.

Source: Baclofen

View full report on Baclofen related tremor

Did the author experience tremor while taking baclofen?

What is this?

Tell us about your Experience with Baclofen

Thank you for sharing your experience with us!

Share Your Experience

Druginformer Identified Side Effects: Anxiety

Posted By nodrugs in fdb.rxlist.com on May 21, 2015 @ 12:00 am

The drug has not helped and is causing more pain and anxiety. I'm sorry that I did not consult with the pharmacist before taking it.

Druginformer Identified Side Effects: Sedation, Psychotic disorder, Tendon operation, Grip strength decreased

Posted By So Tired of Pain! in fdb.rxlist.com on May 16, 2015 @ 12:00 am

... i do a good job of talking to myself. i spent almost 8 years taking 120 soma and 120 norco a month for shoulder pain from rotator and 2 bycep tendons repaired. at least i could stay calm and keep my m...

Druginformer Identified Side Effects: Anxiety, Withdrawal syndrome

Posted By Anonymous in askapatient.com on April 22, 2015 @ 12:00 am

Side Effects: None really. This medication eased the anxiety and tension caused by withdrawals from Klonopin. I've had 2 fairly significant withdrawal episodes from benzos...once in late 2012 I too...

Druginformer Identified Side Effects: Tremor, Abnormal dreams, Dyspnoea, Insomnia, Muscle spasms, Withdrawal syndrome, Emotional distress

Posted By Anonymous in askapatient.com on April 8, 2015 @ 12:00 am

Side Effects: I haven't slept in 3 days it gives me horrible shakes if I don't take it I go through withdrawals I feel emotional vivid dreams I wake up not being able to breathe and I start coughing ...

Druginformer Identified Side Effects: Drug tolerance increased

Posted By Lee Yates in fdb.rxlist.com on January 20, 2015 @ 12:00 am

... a year then they increased it from 60mg per day to 70. Worked great for 6 months and it was increased to 80. Worked great for 3 months and increased to 90mg per day. Has stopped working and neither of...

Druginformer Identified Side Effects: Fatigue, Syncope, Anxiety, Hallucination, Insomnia, Joint stiffness, Mania, Muscular weakness, Fear

Posted By MaryMary in fdb.rxlist.com on December 29, 2014 @ 12:00 am

... in all)! I developed insomnia, only able to sleep avg 20 min pockets of time and became MANIC and delusional. All this from Dec 20 thru 25th, when I finally collapsed from exhaustion from insomnia and...

Druginformer Identified Side Effects: Visual impairment, Hypertension, Somnolence

Posted By Dharma rules in fdb.rxlist.com on December 29, 2014 @ 12:00 am

Taking for pain, back, shoulder , end stage arthritis. My b/p up, eyes blurred, need new glasses, but can't get checked correctly. Too may things, is not worth it. Very fatigued too.

Druginformer Identified Side Effects: Temporomandibular joint syndrome, Muscle tightness

Posted By Snowbird in fdb.rxlist.com on December 23, 2014 @ 12:00 am

I take 40 mg, only at night. It has made my spinal injury, fibromyalgia and TMJ much easier to live with. The muscle tightness is gone and I sleep much better. I function fine in the day, except for t...

Druginformer Identified Side Effects: Somnolence

Posted By Anonymous in askapatient.com on December 10, 2014 @ 12:00 am

Side Effects: Tiredness but not bad

Druginformer Identified Side Effects: Nausea, Somnolence, Muscle tightness

Posted By Autumn Marie in fdb.rxlist.com on December 4, 2014 @ 12:00 am

Since taking baclofen I have noticed a major change in my muscle tightness. Although I suffer from a few sight effects including tiredness and naseau. They are not as bad as me not being on this drug....

Additional Drug Information

* 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.