Trimethoprim + sulfamethoxazole (Bactrim DS)
What to know about Trimethoprim + sulfamethoxazole — also sold as Bactrim DS, Resprim Forte, Septrin Forte, Septrin: uses, side effects, interactions, and safety considerations for people taking it or caring for someone who is.
Trimethoprim + sulfamethoxazole (brand names: Bactrim DS, Resprim Forte, Septrin Forte, Septrin) is classified as Minimal risk by AllMeds. It is a S4 medication under the TGA in Australia. Antibiotic combination with minimal CNS effects or workplace safety impact.
Key Takeaways
- TGA Schedule: S4 in Australia
- Risk level: Minimal (0 points)
- Recommended maximum duration: 14 days
- PBS listed: Subsidised under the Australian Pharmaceutical Benefits Scheme
Scheduling and Classification
| Jurisdiction | Classification | Status |
|---|---|---|
| Australia (TGA) | S4 | PBS listed |
Risk Profile
Antibiotic combination with minimal CNS effects or workplace safety impact.
How Trimethoprim + sulfamethoxazole is regulated
Trimethoprim + sulfamethoxazole is overseen by medicines regulators in each country. The rules below explain how it's scheduled, what oversight applies, and what to discuss with your doctor or pharmacist before starting, changing, or stopping this medication.
Australia TGA / PBS / State Schemes
Classified as S4 under the Therapeutic Goods Administration (TGA).
Listed on the Pharmaceutical Benefits Scheme (PBS) for subsidised prescribing.
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Important: This page is general health information, not personal medical advice. If you have questions about your medication — including starting it, stopping it, changing the dose, or combining it with something else — speak with your doctor or pharmacist. For an emergency or suspected overdose, call your local emergency number or poison information service immediately. Information is drawn from regulator and clinical guideline sources (TGA, FDA, MHRA, NICE, PBS, CDC); see our methodology for details.