Naltrexone
Sold as Trexonil, Altrex, Naltima
(4R,4AS,7aR,12bS)-3-(cyclopropylmethyl)-4a,9-dihydroxy-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-7-one
Drag to rotate. Structure from PubChem CID 5360515.
Background
Registration
- Applicants
- 3
- Registrations
- 3
- Schedule source
- Consolidated Schedules 06 July 2026
Applicants and registrations
| Applicant | Brands | Dosages | Registrations | Schedule | Leaflets |
|---|---|---|---|---|---|
| Wildlife Pharmaceuticals (Pty) Ltd | Trexonil | Not stated | 06/1.3.2/05 | S4 | None |
| Acino Pharma (Pty) LtdCancelled | Altrex | Not stated | 440339 | S4 | None |
| Accord Healthcare (Pty) Ltd | Naltima | Not stated | 450225 | S4 | None |
Variants
| Product | Strength and form | Registration | Status | Schedule | Leaflets |
|---|---|---|---|---|---|
| Trexonil EACH VIAL CONTAINS NALTREXONE HYDROCHLORIDE 50,0 mg | Not listed | 06/1.3.2/0506/1.3/05 | Registered | S4 | None |
| Altrex EACH TABLET CONTAINS NALTREXONE HYDROCHLORIDE 50,0 mg | Not listed | 44033944/1.3.2/0339 | Cancelled | S4 | None |
| Naltima EACH TABLET CONTAINS NALTREXONE HYDROCHLORIDE 50,0 mg | Not listed | 45022545/1.4/0225 | Registered | S4 | None |
Regulatory status
Where S4 sits on the scale
Prescription-only medicine.
Schedule 4 covers most ordinary prescription medicines. You need a prescription from an authorised prescriber, such as a doctor or dentist, and a pharmacist dispenses it. Its price, name, pack size and strength can still be told to the public, as long as nothing links it to what it treats.
Schedule S4, matched to the Consolidated Schedules by ingredient, confidence high.
Who may supply: A pharmacist dispensing against a written or verbal prescription from an authorised prescriber; a veterinarian, who may also prescribe, compound or dispense it directly; a medical practitioner or dentist, who may prescribe it and may compound or dispense it directly only if licensed under section 22C(1)(a); manufacturers and wholesalers may supply people who may lawfully possess it; and, for animal treatment, a person practising a para-veterinary profession, on a veterinarian's written or verbal instruction.
Consolidated Schedules listings for Naltrexone hydrochloride
S4: Naltrexone
Consolidated Schedules 06 July 2026, line 7208
Pharmacological class: Special antidepressant combinations. (class 1.3)
This is an informational summary of the Medicines and Related Substances Act 101 of 1965 and its 2017 General Regulations. It is not medical advice and not legal advice. Always check the medicine's label, which carries the schedule number inside a square border, or ask a pharmacist if you are unsure.
SAHPRA documents
SAHPRA has not published a professional information or patient information leaflet for this product.