Metaxalone (brand name Skelaxin) – 800 mg tablet
Metaxalone is a centrally‑acting muscle relaxant that is used mainly for the short‑term relief of acute musculoskeletal pain when the pain is caused by muscle spasm. It is usually prescribed when other pain‑management strategies (e.g., NSAIDs, acetaminophen, physical therapy) are not enough on their own.
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Typical dosage
| Population | Typical dosing | Maximum daily dose |
|----------------|--------------------|------------------------|
| Adults | 800 mg orally, every 6–8 hours as needed | 2400 mg/day |
| Elderly, renal/hepatic impairment | May need lower doses or increased interval | 1600–2000 mg/day (if at all) |
Important: 800 mg is a single dose. Do not exceed the total daily limit of 2400 mg. Take with food or a glass of water to reduce stomach upset.
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How it works
Metaxalone inhibits motor activity in the spinal cord, which helps reduce muscle spasms and the associated pain. It does not treat the underlying injury or inflammation; it only relieves the spasm‑related component.
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Common side effects
| Symptom | What to watch for |
|---------|------------------|
| Drowsiness / dizziness | May impair driving, operating machinery |
| Dry mouth | Sip water or chew sugar‑free gum |
| Nausea, vomiting, or stomach upset | Take with food |
| Weakness, fatigue | Avoid strenuous activity until you know how you respond |
| Rare: rash, allergic reaction | Seek medical help if you develop itching, hives, or swelling |
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Warnings & Precautions
| Category | Key points |
|----------|------------|
| CNS depression | Metaxalone can cause additive drowsiness when taken with alcohol, opioids, benzodiazepines, or other CNS depressants. |
| Pregnancy & Lactation | Category C. Use only if the benefit outweighs the risk. Not recommended during pregnancy or breastfeeding unless necessary. |
| Elderly | Increased sensitivity and risk of falls; start at the lower end of the dose range. |
| Hepatic/renal impairment | May need dose adjustment; consult your doctor. |
| Drug interactions | Metaxalone is not a strong CYP inhibitor/inducer, but it can potentiate the sedative effects of other drugs. |
| Potential for dependence | Short‑term use only; avoid long‑term therapy. |
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What to avoid
| Substance | Reason |
|-----------|--------|
| Alcohol | Adds to CNS depression and can worsen dizziness. |
| Other muscle relaxants | Can produce excessive drowsiness or respiratory depression. |
| Certain prescription medications (opioids, benzodiazepines, certain sleep aids) | Risk of additive sedation. |
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Overdose
- Symptoms: extreme drowsiness, respiratory depression, hypotension, blurred vision, seizures.
- What to do: Seek immediate medical attention or call emergency services.
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Quick FAQ
| Question | Short answer |
|----------|--------------|
| Do I need a prescription? | Yes. Metaxalone is prescription‑only in most countries. |
| Can I take it with NSAIDs? | Generally safe, but avoid combining with other sedatives. |
| Is it safe for children? | Not approved for pediatric use. |
| What if I miss a dose? | Take the next dose as soon as you remember, but do not double up. |
| Can I use it for chronic pain? | It is meant for short‑term use; chronic conditions should be managed with a comprehensive plan. |
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Bottom line
Metaxalone 800 mg is a useful short‑term adjunct for acute muscle spasm‑related pain, but it should be used exactly as prescribed. Keep track of your dose, avoid substances that add to drowsiness, and monitor for side effects. If you experience any unusual symptoms or have concerns about interactions with other medications you’re taking, talk to your pharmacist or healthcare provider.
Always consult your doctor or pharmacist before starting, stopping, or changing the dose of any medication.