Methocarbamol

Discomfort, Lockjaw, Chronic Pain + 9 more

Treatment

8 FDA approvals

20 Active Studies for Methocarbamol

What is Methocarbamol

Methocarbamol

The Generic name of this drug

Treatment Summary

Methocarbamol is a prescription medicine used to relieve muscle spasticity and associated pain. It is available in tablet form and can be injected directly into the muscle. In the United States, it is used in combination with rest, physical therapy, and other treatments for musculoskeletal conditions. In Canada, methocarbamol can be sold as an over-the-counter oral medicine in combination with acetaminophen or ibuprofen. A combination product with aspirin and codeine is available in Canada by prescription. The drug was approved by the FDA in 1957.

Robaxin

is the brand name

image of different drug pills on a surface

Methocarbamol Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Robaxin

Methocarbamol

1959

395

Approved as Treatment by the FDA

Methocarbamol, commonly known as Robaxin, is approved by the FDA for 8 uses including Musculoskeletal Disorders and Muscle Spasms .

Musculoskeletal Disorders

Muscle Spasms

Used to treat Muscle Spasms in combination with Acetaminophen

Pain

Used to treat moderate to severe pain in combination with Acetaminophen

Discomfort

Tetanus

Spasm

Used to treat Muscle Spasms in combination with Acetaminophen

Musculoskeletal Diseases

Lockjaw

Effectiveness

How Methocarbamol Affects Patients

Methacarbamol is a drug used to help relax muscles. How it works is not yet known. Studies have shown that it can block certain nerve signals, reduce nerve transmission, and lengthen the amount of time it takes for a muscle to recover after a contraction. It does not work as a numbing agent when injected and has been found to prevent seizures in animals when shocked with electricity.

How Methocarbamol works in the body

Methocarbamol works by calming the nervous system, which reduces nerve activity. It does this by blocking reflexes and slowing down the way messages are sent between the brain and spinal cord. It does not, however, have any effect on muscle fibers or motor end plates.

When to interrupt dosage

The advocated dosage of Methocarbamol is contingent upon the determined affliction, including Physical Therapy, Gouty Arthritis and Muscle Spasms. The measure of dosage also fluctuates in regard to the method of delivery (e.g. Tablet - Oral or Tablet) as illustrated in the table beneath.

Condition

Dosage

Administration

Physical Therapy

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Lockjaw

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Discomfort

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Chronic Pain

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Muscle Pain

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Rheumatism

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Arthritis, Gouty

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Rest

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Spasm

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Musculoskeletal Diseases

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Inflammation

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Pain

750.0 mg, , 500.0 mg, 100.0 mg/mL, 400.0 mg

Oral, Tablet - Oral, , Tablet, Injection, Injection - Intramuscular; Intravenous, Intramuscular; Intravenous, Tablet, film coated - Oral, Tablet, film coated, Injection, solution, Injection, solution - Intramuscular; Intravenous, Liquid - Intramuscular; Intravenous, Liquid, Tablet, coated, Tablet, coated - Oral, Kit, Injection - Parenteral, Parenteral, Kit - Oral

Warnings

Methocarbamol has one contraindication and should not be consumed together with the issues specified in the following table.

Methocarbamol Contraindications

Condition

Risk Level

Notes

Severe Hypersensitivity Reactions

Do Not Combine

Methocarbamol may interact with Pulse Frequency

There are 20 known major drug interactions with Methocarbamol.

Common Methocarbamol Drug Interactions

Drug Name

Risk Level

Description

Azelastine

Major

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

Ethanol

Major

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

Oliceridine

Major

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

Thalidomide

Major

Methocarbamol may increase the central nervous system depressant (CNS depressant) activities of Thalidomide.

Daridorexant

Minor

The risk or severity of CNS depression can be increased when Methocarbamol is combined with Daridorexant.

Methocarbamol Toxicity & Overdose Risk

Overdosing on methocarbamol can cause nausea, drowsiness, blurred vision, low blood pressure, seizures, and even a coma. Treatment usually involves making sure the patient can breathe, monitoring vital signs, and providing intravenous fluids if necessary. The toxic dose in rats is 3576.2mg/kg. The FDA has not determined the safety of methocarbamol during pregnancy or while breastfeeding, but fetal and congenital abnormalities have been reported in some cases. There is also not enough research to know if it causes cancer, mutations, or affects fertility. Caution should be taken when taking

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

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

356 clinical trials are currently underway to assess the potential of Methocarbamol in providing relief from Gouty Arthritis, Rest and Musculoskeletal Diseases.

Condition

Clinical Trials

Trial Phases

Physical Therapy

6 Actively Recruiting

Not Applicable

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

Inflammation

0 Actively Recruiting

Lockjaw

0 Actively Recruiting

Rheumatism

0 Actively Recruiting

Rest

0 Actively Recruiting

Spasm

0 Actively Recruiting

Discomfort

0 Actively Recruiting

Arthritis, Gouty

0 Actively Recruiting

Pain

0 Actively Recruiting

Muscle Pain

3 Actively Recruiting

Phase 4, Not Applicable, Phase 2

Methocarbamol Reviews: What are patients saying about Methocarbamol?

4

Patient Review

9/26/2021

Methocarbamol for Muscle Spasm

After my car accident, this medication was prescribed to me by my doctor. I experienced some intense twitching after a week of taking it, so he switched me to another medication. The only other side effect I experienced with this was blurred vision.

4

Patient Review

7/14/2022

Methocarbamol for Muscle Spasm

I've been struggling with lower lumbar arthritis pain for a while now, and this treatment really helps. It's a big relief to finally find something that dulls the pain for 4-6 hours.

3.7

Patient Review

11/27/2021

Methocarbamol for Muscle Spasm

This treatment provides temporary pain relief for about two hours. However, the effects wear off pretty quickly and I have to wait a while before taking another dose. Additionally, I started feeling more aggressive after taking this medication for a few days. Overall, it wasn't a good fit for me.

3.7

Patient Review

7/18/2021

Methocarbamol for Muscle Spasm

I was taking flexiril for months with no results, but this treatment seems to be better.

3.7

Patient Review

2/11/2021

Methocarbamol for Muscle Spasm

This medication was very effective in reducing the frequency and intensity of my leg spasms. I also found that it helped with hand cramping due to dystonia. However, I experienced most of the listed side effects except for convulsions.

3.3

Patient Review

3/21/2022

Methocarbamol for Muscle Spasm

I take this medication for muscle spasms caused by severe stenosis in the lumbar spine. I tried it at bedtime, but found that it had the opposite effect of what I was hoping for - it took a long time to get to sleep and my sleep was short and restless. Taking a combination of methocarbamol and acetaminophen in the morning and again 6 hours before bedtime seems to help during the day and then I use a different muscle relaxant at night.

2.3

Patient Review

5/6/2022

Methocarbamol for Muscle Spasm

I haven't experienced any benefits from this treatment after a week of use. The only change I've noticed is that I'm much more gassy.

2

Patient Review

7/2/2022

Methocarbamol for Muscle Spasm

I've tried other muscle relaxers in the past that have been more effective, but this one didn't make me drowsy.

2

Patient Review

6/16/2021

Methocarbamol for Muscle Spasm

This unfortunately did not work at all for my back spasms. I've heard from others that it works better for them, but I can't in good faith recommend this product.

2

Patient Review

11/2/2022

Methocarbamol for Muscle Spasm

I have a lot of issues with my back. I broke it in 1993 at L6, 7, and 8. I also have lumbar problems and am supposed to get surgery on my neck but haven't yet because no medication has really helped me. The best muscle relaxer out there is Soma; it's the only spasm medication that actually works for me.

2

Patient Review

6/18/2021

Methocarbamol for Muscle Spasm

This treatment was totally ineffective.

2

Patient Review

5/28/2022

Methocarbamol for Muscle Spasm

I took the recommended dose but only experienced gut pain when I woke up. Unfortunately, I didn't really see any benefits from this treatment. Tylenol and Advil worked much better for me.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about methocarbamol

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

What are the side effects of methocarbamol?

"If you experience any of the following side effects, call your doctor immediately: drowsiness, dizziness, upset stomach, blurred vision, fever, or black, blue, or green discoloration of urine."

Answered by AI

Does methocarbamol 750 mg make you sleepy?

"The active ingredient in methocarbamol can cause drowsiness and affect your concentration and focus. This is more likely to happen if you are over 65 or take other medications that cause drowsiness. Do not drink alcohol while taking this medication."

Answered by AI

What is methocarbamol prescribed for?

"Methocarbamol is a medicine used to relieve discomfort caused by acute, painful muscle or bone conditions. However, this medicine should not be used in place of rest, exercise, physical therapy, or other treatment that your doctor may recommend for your medical problem."

Answered by AI

How long does it take methocarbamol to kick in?

"Methocarbamol starts working within 30 minutes, with full effects appearing within 2 hours. As it is relatively short acting, it needs to be taken 3-4 times a day as directed by a doctor."

Answered by AI

Clinical Trials for Methocarbamol

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

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