Mercaptopurine (Allmercap)
What to know about Mercaptopurine — also sold as Allmercap, MERCAPTOPURINE-LINK, Purinethol: uses, side effects, interactions, and safety considerations for people taking it or caring for someone who is.
Mercaptopurine (brand names: Allmercap, MERCAPTOPURINE-LINK, Purinethol) 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. Antimetabolite chemotherapy agent with potential for fatigue and immunosuppression affecting workplace safety.
Key Takeaways
- TGA Schedule: S4 in Australia
- Risk level: Low (2 points)
- 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
Antimetabolite chemotherapy agent with potential for fatigue and immunosuppression affecting workplace safety.
How Mercaptopurine is regulated
Mercaptopurine 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.
United States FDA / CDC / State WC
FDA approved for use in the United States.
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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.