Active ingredient
Carisoprodol
Carisoprodol is a centrally acting skeletal muscle relaxant, marketed under brand names such as Pain-O-Soma and Prosoma. It is used as a short-term adjunct to rest, physiotherapy and other measures for the relief of discomfort associated with acute, painful musculoskeletal conditions. It is intended only for brief courses of treatment and is not suitable for managing long-term or chronic muscle pain.
Reviewed by the Kamagra AUS Pharmacy Team on 5 September 2026 · Next review June 2027
Sources for the medical information on this page
- Carisoprodol — StatPearls, NCBI Bookshelf — Peer-reviewed reference on the muscle relaxant, including dependence risk.
Carisoprodol medicines we deliver Australia-wide
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Pain-O-Soma 500mg — Carisoprodol Tablets
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About Carisoprodol
How it works
Carisoprodol does not act directly on skeletal muscle. Instead, it works within the central nervous system, where it is thought to alter activity between neurons in the spinal cord and brain, producing a sedative effect and reducing the perception of muscle discomfort. In the body it is partly metabolised to meprobamate, a compound with sedative properties, which contributes to its effects and to its potential for dependence.
How it is taken
Take carisoprodol exactly as prescribed and follow the dosing instructions in the patient information leaflet. It is usually taken by mouth and is intended only for short-term use, typically no longer than two to three weeks, because evidence of benefit beyond this period is limited and risks increase with prolonged use. Do not take more than prescribed, and do not stop a prolonged course suddenly without medical advice.
Side effects
Common (usually mild and temporary):
- Drowsiness and sleepiness
- Dizziness or light-headedness
- Headache
- Nausea or upset stomach
- Feeling unsteady or impaired coordination
Stop and seek medical help if you experience:
- Allergic reactions such as rash, swelling of the face or throat, or difficulty breathing
- Severe drowsiness, confusion or loss of consciousness, particularly if combined with alcohol or other sedatives
- Seizures
- Signs of dependence, withdrawal or misuse with prolonged use
- A rare reaction shortly after the first dose involving extreme weakness, temporary loss of vision, confusion and agitation
Safety & who should not take it
- Intended for short-term use only (usually no more than two to three weeks); it is not for long-term treatment.
- May cause marked drowsiness and dizziness — do not drive or operate machinery until you know how it affects you.
- Do not drink alcohol while taking carisoprodol, as this greatly increases sedation.
- Avoid combining with other sedatives, sleeping tablets, opioids or central-nervous-system depressants unless a doctor advises.
- Carisoprodol has a potential for dependence and misuse; take it only as prescribed and do not share it.
- Tell your doctor about all your medical conditions and medicines, and if you are pregnant, planning pregnancy or breastfeeding.
- Do not stop a long-running course abruptly, as withdrawal symptoms may occur; seek medical advice on stopping.
Storage
Store in the original packaging at room temperature, away from excess heat, moisture and direct light, out of the sight and reach of children. Do not use after the expiry date, and dispose of unused medicine safely through a pharmacy.
Frequently asked questions
Can I take carisoprodol for long-term muscle pain?
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No. Carisoprodol is intended only for short-term use, generally no more than two to three weeks. For ongoing or chronic muscle problems, speak to your doctor about more suitable approaches.
Is it safe to drink alcohol while taking carisoprodol?
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No. Alcohol can greatly increase the sedative effects, leading to severe drowsiness, impaired coordination and breathing problems. Avoid alcohol entirely during treatment.
Can carisoprodol cause dependence?
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Yes, particularly with prolonged use or higher-than-prescribed doses, partly because it is metabolised to meprobamate. Take it only as prescribed, and ask your doctor before stopping a long course.
How much does carisoprodol cost in Australia?
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Generic carisoprodol 350mg starts from $84.95 for a 20-pack (Prosoma 350). Delivery is free on orders over $150, otherwise $20 flat.
Important: This information is general and not a substitute for medical advice. Always read the patient information leaflet supplied with your medicine and consult a doctor or pharmacist before use — especially if you have existing health conditions or take other medication.
Carisoprodol health guides
What Is Carisoprodol? How It's Classified in Australia
A plain-English introduction to carisoprodol — what kind of medicine it is, how Australia classifies it, and why that classification exists.
Read guideCarisoprodol vs Other Muscle Relaxants: How It Compares
What actually distinguishes carisoprodol from other muscle relaxants — mechanism, dependence risk and duration of use — without ranking one as simply "better".
Read guideMuscle Relaxant Dependence: The Real Risk, Explained
Why carisoprodol carries a genuine dependence risk, what tolerance and withdrawal actually mean, and what a controlled-medicine classification is protecting against.
Read guideReading a Carisoprodol Blister Pack: Batch Numbers, Expiry and Genuine Packaging
What should be printed on a carisoprodol strip and carton, what a batch number actually does, and the warning signs that mean a pack is worth refusing.
Read guideCarisoprodol and Driving or Operating Machinery: The Safety Basics
Why carisoprodol's sedative effect makes driving and machinery a genuine safety question, not a minor label caveat, and what to check before you get behind the wheel.
Read guideCarisoprodol and Alcohol: What Actually Happens
Why carisoprodol and alcohol should not be combined — the shared mechanism, the more serious respiratory risk, and what to do if it has already happened.
Read guideBuying Carisoprodol Online in Australia: What to Check Before You Order
Carisoprodol is a prescription-only, dependence-forming medicine, so the channel it comes through matters as much as the product — here's what a legitimate order looks like.
Read guideQuestions to Ask Your Doctor Before Starting a Muscle Relaxant
A practical list of questions to bring to the consultation before starting carisoprodol or any muscle relaxant — on diagnosis, dependence risk, interactions and follow-up.
Read guideChronic vs Acute Pain: What's the Real Difference?
Acute and chronic pain aren't just about how long pain lasts — they're genuinely different processes in the body, and that difference shapes how each is treated.
Read guideNerve Pain vs Muscle Pain: How to Tell Them Apart
Nerve pain and muscle pain can both show up in an arm, leg or back, but they come from different sources and often respond to different treatments. Here's how to tell them apart.
Read guideTravelling Within Australia With Prescription Medicine: Pregabalin, Zopiclone and Carisoprodol Rules
Interstate flights, FIFO rosters and long road trips all raise the same question: how do you travel with prescription-only medicine like pregabalin, zopiclone or carisoprodol without a hassle at the gate? Here's what's worth knowing before you pack.
Read guide