Carisoprodol (Soma): Uses, Risks, and Addiction

Dr. Olly Smith
Dr. David Miles
Written by Dr. Olly Smith on 27 May 2025
Medically reviewed by Dr. David Miles on 28 May 2025

Anyone who has experienced a back spasm can tell you just how intensely painful and debilitating they can be. Soma is a muscle relaxant medication used for the short-term treatment of muscle spasms and pain.

However, Soma is prescribed with great caution by doctors due to its habit-forming and addictive potential.

Drug nameCarisoprodol
Brand nameSoma
Drug classMuscle relaxant 
Dose250-350 mg three times a day and at bedtime
Form Tablet 
Key takeaways:
  • Soma is a muscle relaxant used for the short-term treatment of painful muscle spasms or injuries. It should not be used for longer than 2 to 3 weeks.
  • Common side effects include drowsiness, dizziness, and headaches. In rare cases, people may experience an allergic reaction or seizures.
  • Soma is a habit-forming drug, and there is a risk of developing dependence and tolerance when misusing it.
a photo of a woman holding a glass of water while about to take a Soma pill using the other hand

Understanding Carisoprodol (Soma)

Carisoprodol, sold under the brand name Soma, is a muscle relaxant used to relieve musculoskeletal pain. Soma may be beneficial for people who experience painful muscle spasms, strains, sprains, or muscle injuries. It is recommended that people taking Soma rest the injured area and undertake light physical therapy under the guidance of a professional.

Healthcare professionals will only prescribe Soma for a maximum of 2 to 3 weeks. There is limited evidence of its effectiveness in long-term use, and the risk of dependence increases substantially beyond this period.

How Soma works

The exact way in which Soma works to relieve intense muscle pain is unknown. However, we do know that Soma is a centrally acting muscle relaxant, meaning it blocks signaling between the brain and the muscles responsible for excessive and painful muscle spasms.

The main active component of carisoprodol, a substance called meprobamate, is believed to act on GABA receptors. GABA plays a crucial role in the nervous system’s ‘brakes’, being responsible for inhibiting the actions of certain brain signaling pathways.

Dosage and administration

Soma is prescribed for the ‘relief of acute, painful musculoskeletal conditions’. This means it is only given to treat short-term muscle pain resulting from an injury or strain. Soma is not prescribed to manage chronic conditions like arthritis or fibromyalgia.

People over the age of 16 can be prescribed 250-350 mg three times a day and at bedtime (totalling four daily doses). Soma can only be prescribed for a maximum of 2 to 3 weeks.

Soma is available in 250 mg and 350 mg tablets and can be taken with or without food.

Precautions with Soma use

There is a lack of high-quality studies into the use of Soma in some specific patient groups. As such, Soma should be used with caution in people:

  • Under the age of 16.
  • Over 65.
  • With liver or kidney impairment.
  • Who are pregnant or breastfeeding.

People who are allergic to carisoprodol or meprobamate, or people who have a genetic disorder called porphyria, should not take this medication.

Side effects and risks

The most common side effects experienced by people who take Soma include:

  • Drowsiness (13-17%).
  • Dizziness (7-8%).
  • Headache (3-5%).

Due to the increased risk of drowsiness, people who take Soma should exercise caution when driving or operating heavy machinery. Drinking alcohol should also be avoided.

Rarely, people who take Soma may experience more severe adverse effects. Stop taking Soma immediately and contact your doctor if you experience:

  • Allergic reaction - airway swelling, difficulty breathing, and/or a hives rash.
  • Seizures (convulsions).

Addiction potential and abuse

Soma is becoming increasingly misused, both as a result of recreational use and inappropriate long-term medicinal use. The active compound in Soma, meprobamate, is thought to contribute to its addictive potential due to the sedative and euphoric effects that some people experience when taking it.

According to the U.S. Drug Enforcement Administration (DEA), carisoprodol is one of the most commonly diverted medications from the pharmaceutical to the illicit market. The street price of Soma ranges from $1 to $5 per tablet.

Recent case studies have demonstrated that the misuse of Soma can lead to a significant risk of:

Soma overdose

Both accidental and intentional Soma overdoses are possible. Symptoms of Soma overdose include:

  • Movement disorders
  • Severe headaches
  • Respiratory distress
  • Hallucinations
  • Heart damage (cardiotoxicity)
  • Death

If you suspect a Soma overdose, it is essential to receive immediate emergency medical attention.  

Soma controlled substance status

Soma is a Schedule IV controlled drug under the Controlled Substances Act. This means it is illegal to sell, consume, possess, or manufacture without a valid prescription or license.

Recognizing dependence and withdrawal symptoms

Substance addiction can have a profound impact on a person’s ability to lead a healthy and fulfilling life. Signs of Soma dependence may include:

  • Needing more and more of the drug to achieve the same effects (tolerance).
  • Experiencing withdrawal symptoms when no longer taking Soma.
  • Continued use of Soma despite recognizing the problems caused by its use.
  • Spending lots of time acquiring, using, and recovering from Soma use.
  • Impact on the ability to receive an education or maintain employment.
  • Pulliing away from friends and family.

With prolonged use, people who suddenly stop or dramatically reduce the dose of Soma may experience symptoms of withdrawal. Common withdrawal symptoms include:

  • Depression and anxiety.
  • Hallucinations.
  • Memory loss.
  • Sleeplessness.
  • Social withdrawal.
  • Agitation and aggression.

Addiction treatment and recovery options

It is never too early to get help for Soma addiction. However, there has been little progress in the development of high-quality treatment options for people with Soma addiction. Current treatment approaches include:

For more information on rehabilitation providers near you, take a look at our rehab clinic directory.

Preventing misuse and safe use tips

When taken as directed, Soma can be a helpful medication for managing short-term muscle pain. The following tips can help manage the risk of dependence and overdose:

  • Explore options such as simple pain relief (acetaminophen and ibuprofen) and physical therapy before trying Soma.
  • Only take Soma as prescribed by a healthcare professional, for the shortest possible time (a maximum of 2 to 3 weeks).
  • Never take a prescription medication that a medical professional has not authorized.
  • Do not consume alcohol when taking Soma.
  • Do not take Soma if you have a history of substance misuse.
  • Seek support from your healthcare provider if you are concerned about your Soma use or the impact of side effects.

FAQs

Common questions about Soma

Is Soma addictive?

Soma is a habit-forming drug. This means there is an increased risk of dependence and tolerance. The risk of addiction is reduced when taken as prescribed by a healthcare professional for a maximum of 2 to 3 weeks.

Is Soma a narcotic?

Medically, the term ‘narcotic’ refers to opioids used to treat moderate to severe pain. As such, Soma is not considered a narcotic. However, the term is also often used colloquially to refer to controlled substances with some level of addiction risk (including Soma).

How does Soma compare to other muscle relaxants?

There are two main types of muscle relaxers, antispasmodic and antispastic. Carisoprodol is an antispasmodic medication that helps prevent painful muscle spasms. Other antispasmodics include:

  • Chlorzoxazone
  • Cyclobenzaprine
  • Metaxalone
  • Methocarbamol
  • Orphenadrine

Baclofen and dantrolene are two antispastic medications that combat excessive muscle tension and twitching. Tizanidine and diazepam have both antispastic and antispasmodic effects.

Which one is stronger, Soma or Flexeril?

Flexeril (cyclobenzaprine) is another antispasmodic muscle relaxant. Although it produces the same effects and has a similar side effect profile to Soma, Flexeril acts directly on the brain’s processing and response to muscle pain. Soma appears to have additional pain-relieving effects, directly altering our experience of pain via GABA receptors, when compared to Flexeril.

One medication is not considered stronger than the other, with both being valid treatment options for short-term muscle pain.

How does Soma interact with other medications?

It is important to discuss your full medical history and current medications with your healthcare provider when starting Soma, as they can advise you on any specific risks or interactions.

It is not recommended to take Soma alongside another central nervous system depressant, such as alcohol, benzodiazepines, opioids, or tricyclic antidepressants. Other potential interacting medications include St. John’s Wort, rifampin, and aspirin.

Was this page helpful?

Your feedback allows us to continually improve our information

Resources:

  1. Conermann, T., & Christian, D. (2022). Carisoprodol. PubMed; StatPearls Publishing.
  2. Carisoprodol: Uses, Dosage, Side Effects. Drugs.com.
  3. Haymarket. (2025). SOMA Dosage & Rx Info | Uses, Side Effects. MPR.
  4. Highlights of Prescribing Information - Carisoprodol. FDA.
  5. Gonzalez, L. A., Gatch, M. B., Forster, M. J., & Dillon, G. H. (2009). Abuse Potential of Soma®: the GABAA Receptor as a Target. Molecular and Cellular Pharmacology, 1(4), 180.
  6. Carisoprodol. Drug Enforcement Administration.
  7. Cleveland Clinic. (2023, February 7). Muscle Relaxers. Cleveland Clinic.
  8. Khan, I., & Kahwaji, C. I. (2023, August 28). Cyclobenzaprine. PubMed; StatPearls Publishing.

Activity History - Last updated: 28 May 2025, Published date:


Reviewer

David is a seasoned Pharmacist, natural medicines expert, medical reviewer, and pastor. Earning his Doctorate from the Medical University of South Carolina, David received clinical training at several major hospital systems and has worked for various pharmacy chains over the years. His focus and passion has always been taking care of his patients by getting accurate information and thorough education to those who need it most. His motto: "Good Information = Good Outcomes".

Activity History - Medically Reviewed on 27 May 2025 and last checked on 28 May 2025

Medically reviewed by
Dr. David Miles

Dr. David Miles

PharmD

Reviewer

Recovered Branding BG
Ready to talk about treatment? Call today. (833) 840-1202
Helpline Information

Calls to numbers marked with (I) symbols will be answered or returned by one of the treatment providers listed in our Terms and Conditions, each of which is a paid advertiser.

In calling the helpline you agree to our Terms and Conditions. We do not receive any fee or commission dependent upon which treatment or provider a caller chooses.

There is no obligation to enter treatment.

Access State-Specific Provider Directories for detailed information on locating licensed service providers and recovery residences in your area.

For any specific questions please email us at info@recovered.org

Related topics

Flexeril Dosage

2 minutes read