Primidone (Mysoline)
Primidone risk profile, scheduling, and guidance for claims professionals and care workers . Also known as Mysoline.
Primidone (brand names: Mysoline) is classified as Low risk (2 risk points) by AllMeds. It is a S4 medication under the TGA in Australia. FDA approved in the United States. Barbiturate derivative anticonvulsant with CNS depressant effects but lower abuse potential than traditional barbiturates.
Key Takeaways
- TGA Schedule: S4 in Australia
- Risk level: Low (2 points)
- CNS depressant: May cause sedation, impair driving, and affect work capacity
- PBS listed: Subsidised under the Australian Pharmaceutical Benefits Scheme
Scheduling and Classification
| Jurisdiction | Classification | Status |
|---|---|---|
| Australia (TGA) | S4 | PBS listed |
| United States (FDA) | Rx only | FDA approved |
Risk Profile
Barbiturate derivative anticonvulsant with CNS depressant effects but lower abuse potential than traditional barbiturates.
Regulatory and Compliance Guidance
When Primidone appears on a claimant's medication list, claims professionals should assess whether the prescribing is appropriate for the compensable injury, whether the duration is within guidelines, and whether there are interactions with other medications on the claim.
Work capacity impact: As a CNS depressant, Primidone may impair driving, operating machinery, and cognitive function. Work capacity certificates should reflect any medication-related restrictions.
Australia TGA / PBS / State Schemes
Classified as S4 under the Therapeutic Goods Administration (TGA).
Listed on the Pharmaceutical Benefits Scheme (PBS) for subsidised prescribing.
United Kingdom NICE / MHRA / FPM
UK drug driving laws (Section 5A Road Traffic Act 2006) set specific limits for prescription drugs that cause impairment. Employers and occupational health advisors should assess fitness to work.
United States FDA / CDC / State WC
FDA approved for use in the United States.
Need to assess this medication across your caseload?
Run a full risk assessment including Primidone interactions and compliance checks.
AllMeds gives you instant risk assessments, compliance checks, and automated letters for every medication on a claim.
No credit card required. No signup for your first 2 questions.
Medical Disclaimer: This content is for informational purposes for claims professionals and care workers. It is not medical advice. Always consult a qualified healthcare professional for clinical decisions. Drug information is sourced from TGA, FDA, MHRA, PBS, NICE, and CDC databases and may not reflect the latest updates. AllMeds does not replace clinical judgement.