Nalidixic acid (Winlomylon, Adco Winlomylon, Puromylon)
Nalidixic acid
Adcock ingram limited
Registration
- Applicant
- Adcock ingram limited
- Registrations
- 3
- Schedule source
- Consolidated Schedules 06 July 2026
Variants
| Product | Strength and form | Registration | Status | Schedule | Leaflets |
|---|---|---|---|---|---|
| Winlomylon tablets TABLET NALIDIXIC ACID 500 MG | Tablets | A0025A/18.5/25 | Cancelled | S4 | None |
| Adco winlomylon suspension EACH 5,0 ml SUSPENSION CONTAINS NALIDIXIC ACID 250,0 mg | Suspension | A0026A/18.5/26 | Cancelled | S4 | None |
| Puromylon EACH TABLET CONTAINS NALIDIXIC ACID 500 MG | Not listed | K0247K/18.5/247 | 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 Nalidixic acid
S4: Nalidixic acid
Consolidated Schedules 06 July 2026, line 7202
Pharmacological class: Urinary tract antiseptics. (class 18.5)
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.
1-Ethyl-7-methyl-4-oxo-1,8-naphthyridine-3-carboxylic acid
Drag to rotate. Structure from PubChem CID 4421.
SAHPRA documents
SAHPRA has not published a professional information or patient information leaflet for this product.