Metaxalone

Chronic Pain, Musculoskeletal Diseases

Treatment

4 FDA approvals

20 Active Studies for Metaxalone

What is Metaxalone

Metaxalone

The Generic name of this drug

Treatment Summary

Metaxalone is a medication used to treat muscle pain and stiffness. It is sold under the brand name Skelaxin, and works by calming the central nervous system. Metaxalone usually comes in an 800 mg tablet and has few side effects.

Skelaxin

is the brand name

image of different drug pills on a surface

Metaxalone Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Skelaxin

Metaxalone

1962

134

Approved as Treatment by the FDA

Metaxalone, otherwise called Skelaxin, is approved by the FDA for 4 uses which include Pain and Musculoskeletal Disorders .

Pain

Helps manage Pain

Musculoskeletal Disorders

Helps manage Musculoskeletal Disorders

Chronic Pain

Helps manage Pain

Musculoskeletal Diseases

Helps manage Musculoskeletal Disorders

Effectiveness

How Metaxalone Affects Patients

Metaxalone is a drug that helps relieve pain from muscle injuries and conditions. It is usually taken at the same time as rest, physical therapy, and other treatments. It is not known exactly how this drug works, but it is thought to be due to its calming effects. Metaxalone does not directly make tense muscles relaxed.

How Metaxalone works in the body

We don't know exactly how metaxalone works, but it seems to cause a calming effect on the central nervous system.

When to interrupt dosage

The prescribed amount of Metaxalone is reliant on the identified disorder. The amount of dosage fluctuates, according to the method of delivery featured in the table below.

Condition

Dosage

Administration

Musculoskeletal Diseases

800.0 mg, , 400.0 mg, 640.0 mg

, Oral, Tablet - Oral, Tablet, Kit

Chronic Pain

800.0 mg, , 400.0 mg, 640.0 mg

, Oral, Tablet - Oral, Tablet, Kit

Warnings

There are 20 known major drug interactions with Metaxalone.

Common Metaxalone Drug Interactions

Drug Name

Risk Level

Description

Azelastine

Major

Metaxalone may increase the central nervous system depressant (CNS depressant) activities of Azelastine.

Ethanol

Major

Metaxalone may increase the central nervous system depressant (CNS depressant) activities of Ethanol.

Methylene blue

Major

Metaxalone may increase the serotonergic activities of Methylene blue.

Mirtazapine

Major

Metaxalone may increase the serotonergic activities of Mirtazapine.

Oliceridine

Major

The risk or severity of hypotension, sedation, death, somnolence, and respiratory depression can be increased when Metaxalone is combined with Oliceridine.

Metaxalone Toxicity & Overdose Risk

The toxic dose of the drug in rats is 775mg/kg when given orally, and 1690mg/kg when given orally to mice. As the dosage increases, the animals may become increasingly sedated and eventually stop breathing. Dogs may vomit after 15-30 minutes when given high doses of the drug. Some side effects of the drug in humans include nausea, vomiting, drowsiness, dizziness, headaches, and irritability.

image of a doctor in a lab doing drug, clinical research

Metaxalone Novel Uses: Which Conditions Have a Clinical Trial Featuring Metaxalone?

There are 177 active clinical trials examining the potential of Metaxalone in alleviating Musculoskeletal Diseases.

Condition

Clinical Trials

Trial Phases

Musculoskeletal Diseases

2 Actively Recruiting

Not Applicable, Phase 2, Phase 3

Chronic Pain

130 Actively Recruiting

Not Applicable, Phase 4, Phase 2, Phase 3, Early Phase 1, Phase 1

Metaxalone Reviews: What are patients saying about Metaxalone?

5

Patient Review

7/28/2020

Metaxalone for Muscle Spasm

I've been using this medication to relieve severe leg cramps for over a decade now. These cramps often come at night without warning and can be incredibly painful. This medication helps fairly quickly, which allows me to get some much-needed rest.

5

Patient Review

6/3/2014

Metaxalone for Muscle Spasm

4

Patient Review

1/29/2017

Metaxalone for Muscle Spasm

Though it made me nauseous, this medication was no more effective than Advil at reducing my back pain.

4

Patient Review

2/10/2016

Metaxalone for Muscle Spasm

I'm not sure if it's the placebo effect or what, but I feel like this treatment is giving me mood swings.

3.3

Patient Review

3/20/2016

Metaxalone for Muscle Spasm

I was told to take this medication three times a day, but I found that cutting the pills in half and only taking them at night worked better for me. The main side effect I experienced was fatigue, which was really disrupting my daily life. I'm hoping to find something else that will work better for me when I see my doctor next week.

3.3

Patient Review

7/2/2014

Metaxalone for Muscle Spasm

2.3

Patient Review

9/23/2016

Metaxalone for Muscle Spasm

I've been taking this medication since my work-related back injury, but I have yet to feel any relief.

2.3

Patient Review

1/14/2022

Metaxalone for Muscle Spasm

I didn't find this to be any more effective than Flexeril for my tendonitis, but I did feel a bit less forgetful. However, the other side effects were really bad - stomach issues, fatigue, and general malaise. I actually wondered if I had a virus it was so bad.

2

Patient Review

5/17/2016

Metaxalone for Muscle Spasm

This medicine didn't help me and the side effects were really bad.

1.7

Patient Review

4/14/2022

Metaxalone for Muscle Spasm

I didn't feel any different after taking these.

1.7

Patient Review

10/9/2014

Metaxalone for Muscle Spasm

1.3

Patient Review

4/24/2021

Metaxalone for Muscle Spasm

I didn't find this treatment effective at all. I still experienced cramps and nausea.

1

Patient Review

7/22/2020

Metaxalone for Muscle Spasm

I have a herniated disc in my neck and back, and this treatment did nothing to ease the pain or spasms.

1

Patient Review

7/30/2022

Metaxalone for Muscle Spasm

Unfortunately, this medication did not relieve any of the pain I was experiencing in my back. The spasms actually got worse while I was taking it. I had to stop and ask my doctor for something stronger.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about metaxalone

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

Does metaxalone help with anxiety?

"Metaxalone relaxes the central nervous system, which can help with anxiety, and has consequent side effects of dizziness, drowsiness, and sedation. The drug is only a short-term therapy."

Answered by AI

What is the side effects metaxalone?

"The following side effects may occur: drowsiness, dizziness, nausea, vomiting, and upset stomach. If any of these effects last or worsen, tell your doctor or pharmacist. Remember that this medication was prescribed because your doctor has determined that the benefit to you is greater than the risk of side effects."

Answered by AI

What is metaxalone used to treat?

"This medication is used to help relax the muscles in your body and relieve the discomfort caused by acute (short-term), painful muscle or bone conditions."

Answered by AI

Is metaxalone a strong muscle relaxer?

"Metaxalone is a muscle relaxant that can be used for treating sprains, strains, and other muscle-based pain. It is not as strong as some other muscle relaxers, but it causes fewer side effects. These side effects can include nausea, drowsiness, vomiting, dizziness, and irritability."

Answered by AI

Clinical Trials for Metaxalone

Image of Cincinnati Urogynecology Associates in Cincinnati, United States.

Nitrous Oxide for Pain During Bladder Botox Injections

18+
Female
Cincinnati, OH

The goal of this clinical trial is to assess if a mix of nitrous oxide and oxygen can improve pain control during bladder Botox injections. The primary question it aims to answer is: Does using nitrous oxide lower the overall level of pain during the procedure? Researchers will compare a 50:50 nitrous oxide/oxygen mixture (administered with the Pro-Nox system) plus standard care (with lidocaine in the bladder) to sham mask plus standard care to see if nitrous oxide works better for lowering pain. Participants will: * Receive their bladder Botox injection in the office setting * Either use nitrous oxide/oxygen plus standard care during the procedure, or sham mask plus standard care * Answer brief questions about pain, anxiety, satisfaction, and willingness to repeat the procedure

Phase 4
Waitlist Available

Cincinnati Urogynecology Associates (+1 Sites)

Image of AltaSciences, Inc in Cypress, United States.

SBS-147 Safety Study

18 - 55
All Sexes
Cypress, CA

This study is part of the HEAL Initiative supported by the NIH. The purpose of this study is to learn how safe the study drug, SBS-147, is and how people's bodies respond to and process it. Researchers will also look for any side effects that may occur when taking SBS-147. Some participants will receive SBS-147, and others will receive a placebo, which looks the same but does not contain any medicine. This helps researchers fairly compare results. The study includes two parts: Single-Dose Group, where Participants receive SBS-147 or placebo one time. Multiple-Dose Group, where Participants receive SBS-147 or placebo once or twice daily for 7 days.

Phase 1
Waitlist Available

AltaSciences, Inc

Jeff Reich, MD

Sparian Biosciences, Inc

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Image of Hospital for Special Surgery in New York, United States.

Suzetrigine for Total Hip Replacement

18 - 80
All Sexes
New York, NY

Total hip and knee joint replacements are among the most common and painful orthopedic procedures performed worldwide, often requiring intensive analgesia to support early ambulation and recovery. Despite widespread use of multimodal regimens, many patients still rely on opioids, which can cause sedation, nausea, constipation, and long-term dependency. Evaluating Suzetrigine in this high-need population may improve recovery trajectories, reduce opioid consumption, and support enhanced recovery protocols. Given the growing surgical volume and the emphasis on opioid-sparing strategies, rigorous investigation of Suzetrigine's efficacy in joint replacement is of high clinical value. In this study, patients undergoing primary total hip replacement will be randomized to receive either Suzetrigine or placebo for seven days, with the loading dose administered prior to surgery. The primary outcome is cumulative 48-hour opioid consumption in oral morphine equivalents starting from entry into the post-anesthesia care unit (PACU).

Phase 3
Recruiting

Hospital for Special Surgery

Image of Vanderbilt University Medical Center in Nashville, United States.

Lidocaine Infusions for Postoperative Pain

18+
All Sexes
Nashville, TN

The goal of this single-center, pragmatic, randomized, blinded, placebo-controlled trial is to evaluate the impact of intravenous (IV) lidocaine within the existing Enhanced Recovery After Surgery (ERAS)program on outcomes in patients after major abdominal surgery. The main questions the trial aims to answer are: The primary hypothesis is that utilization of IV lidocaine as part of a perioperative multimodal pain regimen will result in a reduction in hospital Case Mix Index-Adjusted Resource Length of Stay (CARLOS). The secondary hypotheses are that lidocaine infusion will result in a reduction in total inpatient opioid consumption (oral morphine milligram equivalents, oMMEs) and pain scores, and improved surgical outcomes (including return of bowel function, ileus, nausea, rapid responses called, surgical site infections, and ICU transfers), while also having minimal incidence of side effects (including double/blurry vision, tinnitus, sedation, and adverse events requiring early cessation).

Phase 4
Waitlist Available

Vanderbilt University Medical Center

Danial Shams, MD

Image of Baylor College of Medicine/Texas Children's Hospital in Austin, United States.

Guided Imagery Therapy for Abdominal Pain

7 - 12
All Sexes
Austin, TX

Chronic abdominal pain is common among children, and the majority of cases are attributed to functional abdominal pain disorders. One approach to treating these disorders is by using psychological therapies. This clinical trial aims to see how well pre-recorded guided imagery therapy sessions help children's abdominal pain when delivered via a mobile application (app) on a smartphone or tablet. Participants will complete a baseline abdominal pain and stooling diary to determine eligibility, as well as other surveys. Eligible participants will be given access to the guided imagery therapy mobile application. This intervention asks participants to listen to a 10- to 15-minute GIT session 5 out of 7 days per week for 8 weeks, in addition to their usual care for their abdominal pain. Then, participants will complete another abdominal pain and stooling diary, along with other psychometric surveys, at the end of this intervention period. Participants will also collect another diary and surveys 3 months post-treatment.

Waitlist Available
Has No Placebo

Baylor College of Medicine/Texas Children's Hospital (+1 Sites)

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