How Long Does Soma Stay in Your System?

Authored By:

Matthew D'Ursov

Edited By:

Amy Leifeste

Medically Reviewed By

Karena Mathis

Authored By:

Matthew D'Ursov

Edited By:

Amy Leifeste

Medically Reviewed By

Karena Mathis

All of the information on this page has been reviewed and verified by a certified addiction professional.

How Long Does Soma Stay in Your System?

Soma, a prescription muscle relaxant, typically stays in your system for 2 to 5 days, depending on factors like dosage, frequency of use, and individual metabolism. Carisoprodol, its active ingredient, has a short duration of action, but its metabolite, meprobamate, can remain detectable longer. Misuse increases the risk of dependence and severe side effects, such as drowsiness or confusion. 

This article explains how long Soma stays in your system, including detection times, testing visibility, and elimination factors. 

What is Soma (Carisoprodol)

Soma (carisoprodol) is a prescription muscle relaxant used for short-term relief of acute muscle pain and spasms [1]. It works by affecting the central nervous system to block pain signals between the brain and spinal cord. The medication typically takes effect within 30 minutes, and its pain-relieving effects last about 4 to 6 hours. Doctors prescribe Soma for conditions like muscle strains or injuries, often alongside physical therapy or rest to enhance recovery. 

Soma is intended for short-term use, typically no longer than two to three weeks, due to its potential for dependence [2]. Misuse of Soma can lead to serious side effects, including drowsiness, poor coordination, or confusion. 

Risks of Soma Misuse

Misusing Soma can lead to significant health risks, both physical and mental, particularly when taken in higher doses or combined with other substances. Carisoprodol’s sedative effects can cause dependence, especially with prolonged or unsupervised use. Overdose is a serious concern, as it can depress the central nervous system, leading to life-threatening complications. Understanding these risks is essential for anyone using Soma or considering how long Soma stays in the system during recovery. 

Physical Effects of Misuse

  • High doses of Soma can slow breathing, which may become life-threatening during an overdose [3].

  • The drug’s sedative properties can cause drowsiness, lightheadedness, or fainting, impairing coordination and increasing the risk of falls or accidents. 

  • Some users experience blurred vision, which can affect activities like driving or operating machinery. 

  • Muscle weakness, beyond the intended relaxation, may make movements unsteady or difficult. 

Mental Effects of Misuse

  • Soma misuse can disrupt clear thinking, leading to confusion or difficulty concentrating on simple tasks. 

  • Long-term or high-dose use may trigger mood swings, causing irritability or emotional instability. 

  • Forgetting recent conversations can occur with repeated use. 

  • Some users experience rebound anxiety between doses, which may worsen with ongoing misuse. 

Half-Life of Soma

The half-life of Soma (carisoprodol) is about 2 to 3 hours, meaning half the dose is eliminated from the body in that time [4]. Its metabolite, meprobamate, has a longer half-life of 6 to 17 hours, which extends the drug’s detectability in tests. For most people, Soma’s therapeutic effects last 4 to 6 hours, but frequent use can prolong its presence in the body. 

Carisoprodol and meprobamate are both considered when evaluating Soma’s half-life or half-life of Soma for drug testing purposes, such as workplace or legal screenings. With chronic use, complete elimination may take up to 5 days due to accumulation in body tissues. 

Factors That Influence How Long Soma Stays in Your System

Several factors affect how long Soma stays in your system, impacting detection times in drug tests [5]. These include drug usage patterns, individual health conditions, and lifestyle factors. Misuse or high doses can lead to side effects like drowsiness or confusion. Variations in metabolism, organ function, and other factors cause detection windows to differ between individuals. 

Liver and Kidney Function

The liver metabolizes carisoprodol into meprobamate, and the kidneys excrete this metabolite. Impaired liver or kidney function can slow this process, extending detection times [6]. For example, kidney issues may delay meprobamate clearance, keeping Soma detectable longer.

Frequency of Use

Frequent or chronic use causes carisoprodol and meprobamate to build up in body tissues. This accumulation extends the time Soma remains in circulation after its effects fade. The more often Soma is taken, the longer it takes to clear, increasing detection windows in tests.

Body Fat Percentage

Carisoprodol is fat-soluble, meaning it can accumulate in fatty tissues. Individuals with higher body fat percentages may retain Soma longer, as the drug slowly releases back into the bloodstream. 

Age and Metabolism

Older adults typically process drugs more slowly due to reduced metabolic rates [7]. This slower metabolism extends the time Soma remains detectable. Individual metabolic differences also influence clearance times across all age groups.

Dosage

Higher doses of Soma result in greater concentrations in the body, slowing clearance and extending detection times [8]. Large doses increase the workload on the liver and kidneys during metabolism. 

Hydration and Other Medications

Hydration levels can affect kidney function and drug excretion rates. Dehydration may slow clearance, while adequate hydration can support faster elimination [6]. Using other medications concurrently, particularly sedatives, may affect Soma’s metabolism and extend its duration in the body.

How Long Does Soma Stay in Your Urine, Hair, and Blood?

How long Soma stays in your system depends on the testing method used, with detection windows varying by bodily system [4]. Below are the typical timelines for how long Soma stays in urine, blood, and hair, influenced by dosage, frequency, and individual factors. These tests are used in medical, workplace, or legal settings to detect Soma use. Meprobamate, Soma’s metabolite, often extends detection periods due to its longer half-life.

Blood

  • Soma is detectable in blood for 2 to 3 days after the last dose, though chronic use may extend this to 5 days [4]. 

  • Meprobamate remains detectable longer due to its extended half-life. 

  • Blood tests are often used in medical settings to monitor recent use or overdose cases.

Hair

  • Soma and meprobamate can be detected in hair for up to 30 days, or up to 90 days in some cases, depending on hair length and testing methods [5]. 

  • Hair tests are less common but effective for detecting long-term use. 

  • They are often used in forensic or legal contexts.

Urine

  • Carisoprodol is detected in urine for about 2 to 3 days after the last dose, but with repeated use, it may be detectable for up to 5 days [4]. 

  • Meprobamate can increase the duration Soma remains in the urine due to its longer half-life. 

  • Urine tests are the most common method for workplace or medical screenings due to their accessibility and reliability.

Will Soma Show Up On a Standard Pre-Employment Drug Test?

Soma (carisoprodol) does not typically show up on standard pre-employment drug tests, but it may be detected in extended panels that include muscle relaxants. 

Many people worry about whether Soma will show up on a drug test, or what Soma shows up as on a drug test. Below are answers to common concerns about what Soma tests positive for and related questions. These clarify how Soma is detected in various testing scenarios.

Does Soma Show Up on a Drug Test?

Yes, Soma can be detected if the drug test specifically screens for carisoprodol or its metabolite, meprobamate. While it may not appear on basic panels, certain workplaces, such as those in safety-sensitive industries, may include it in extended tests. Confirming the test’s scope with the employer or agency is advisable.

Does Soma Show Up in a 12 Panel Drug Test?

Some 12-panel drug tests may include carisoprodol, making it detectable for 2 to 5 days after use, depending on the test’s configuration. Not all 12-panel tests screen for Soma, so verification with the testing agency is necessary. 

What Does Soma Show Up As on a Drug Test?

Soma typically shows up as carisoprodol or its metabolite, meprobamate, on a drug test. Some tests may detect meprobamate as a central nervous system depressant. Advanced testing methods, like gas chromatography-mass spectrometry, ensure accurate identification of these compounds.

What Does Soma Test Positive For?

Soma tests positive for carisoprodol or meprobamate. In rare cases, meprobamate may cause a false positive for barbiturates on less precise tests, though modern methods minimize this risk. Accurate testing ensures reliable results for Soma detection.

Do Muscle Relaxers Show Up on a Drug Test?

Muscle relaxers like Soma may show up on expanded drug tests that screen for carisoprodol or meprobamate. Standard tests typically do not include muscle relaxants, but the presence of muscle relaxers on a drug test depends on the test’s scope. Extended panels are more likely in high-risk job settings.

How Long Does It Take for Soma to Get Out of Your System?

Soma typically takes 2 to 5 days to fully clear from the body, depending on usage and individual factors. Meprobamate may extend this timeline, especially in urine or hair tests. Chronic use, high doses, or impaired organ function can further prolong elimination, affecting how long it takes for Soma to get out of your system.

FAQs

Does Soma Show Up as a Benzo?

No, Soma is not a benzodiazepine and will not test positive as one. In rare cases, its metabolite, meprobamate, may be confused with barbiturates on less precise tests, but modern methods like gas chromatography prevent this error. 

How Long Do Muscle Relaxers Stay in Urine?

Muscle relaxers like Soma typically stay detectable in urine for 2 to 5 days. The exact timeline depends on dosage, frequency of use, and individual metabolism. Meprobamate, Soma’s metabolite, may extend this detection window slightly, particularly in chronic users.

How Long Is Carisoprodol Detected in Urine?

Carisoprodol is detected in urine for about 2 to 3 days after the last dose, though chronic use may extend this to 5 days. Factors like kidney function, dosage, and frequency of use influence this timeline.

Get Treatment for Soma Addiction at Alliance Recovery

If you or a loved one is struggling with Soma addiction, don’t wait to get the help you need. Our experienced treatment team is here to guide you on the path to recovery, with evidence-based treatments, compassionate care, and effective therapies. Tapering off Soma under medical supervision is essential to prevent withdrawal symptoms like restlessness, insomnia, or anxiety. 

Here at Alliance Recovery, our executive leadership and admissions staff have extensive knowledge of addiction treatment, with many members of our team having gone through treatment themselves. Through years of dedication to service and striving to develop a connection with fellow addicts, our team has cultivated a passion for helping others who find themselves in the same position.

When you come to Alliance Recovery, you’ll experience:

  • Real, genuine care from people who understand you

  • Evidence-based treatment programs

  • Individual and group therapy sessions

  • Personalized treatment plans, including safe tapering for Soma

  • Supportive sober community & treatment staff

  • Aftercare & career placement

Start your journey to recovery today. Call our treatment team at (844) 287-8506 to get started.

Sources

[1] https://pmc.ncbi.nlm.nih.gov/articles/PMC2858432/

[2] https://pmc.ncbi.nlm.nih.gov/articles/PMC3288484/

[3] https://pmc.ncbi.nlm.nih.gov/articles/PMC3240720/

[4] https://pmc.ncbi.nlm.nih.gov/articles/PMC3183241/

[5] https://pmc.ncbi.nlm.nih.gov/articles/PMC1470276/

[6] https://pmc.ncbi.nlm.nih.gov/articles/PMC2000626/

[7] https://pmc.ncbi.nlm.nih.gov/articles/PMC7746313/

[8] https://pmc.ncbi.nlm.nih.gov/articles/PMC2745867/

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