NZ Medicines Act 1981: Prescriptions, Schedules and Labelling

The Medicines Act 1981 — Framework

The Medicines Act 1981 is the principal statute governing the manufacture, sale, and supply of medicines in New Zealand. It establishes a classification system that determines how each medicine may be lawfully supplied and by whom. The Act is administered by Medsafe, the New Zealand Medicines and Medical Devices Safety Authority, which operates within the Ministry of Health.

Medicine Classifications

The Act divides medicines into four principal categories based on their safety profile and the degree of professional oversight required at the point of supply.

Prescription Medicines (Part I / Schedule 1) must only be supplied by a pharmacist following receipt of a valid prescription from an authorised prescriber. Authorised prescribers include registered medical practitioners, dentists, nurse practitioners, and midwives (within their scope of practice). Prescriptions must include the prescriber's full name, address, qualifications, signature, date, patient's full name, the medicine name, strength, dosage form, directions, and quantity to be supplied. Prescriptions are valid for six months from the date of issue unless otherwise specified, except for controlled drugs which have more stringent requirements.

Restricted Medicines (Part II / Schedule 2) may be sold without a prescription but only from a registered pharmacy and only by or under the direct supervision of a pharmacist. The pharmacist must counsel the patient at the point of supply. Examples include emergency hormonal contraception (levonorgestrel), some antihistamines at higher doses, and pseudoephedrine-containing products.

Pharmacy-Only Medicines (Part III / Schedule 3) may be sold only from a registered pharmacy but do not require the pharmacist to personally conduct the sale. Pharmacy assistants may sell these products, though the pharmacist must be on the premises. Examples include certain ibuprofen pack sizes and some topical antifungals.

General Sale Medicines (Part IV) may be sold from any retail outlet — supermarkets, dairies, petrol stations — without any professional oversight. Examples include paracetamol in limited pack sizes and some antacids.

Prescription Requirements

A valid prescription in New Zealand must be written or printed, dated, and include: the prescriber's name, address, and qualifications; the prescriber's signature (handwritten); the patient's full name and date of birth (or age); the medicine name (generic preferred), strength, and dose form; directions for use; and the quantity or duration of treatment. Prescriptions for S1 medicines cannot be dispensed after six months from the date on the prescription.

Computer-generated prescriptions are valid provided they include all required particulars and bear an original handwritten signature. Electronic prescriptions are being progressively introduced in NZ under the eReferral and ePrescription programme.

Labelling Requirements

Dispensed medicine labels must include: the pharmacy name and address; the patient's full name; the date of dispensing; the medicine name, strength, and quantity; directions for use; prescriber's name; any required cautionary advisory labels (CALs); expiry date if applicable; and storage instructions. Labels must be in English. Cautionary labels (e.g., "Take with food," "Avoid alcohol," "May cause drowsiness") are selected from the NZF and must be applied when clinically appropriate.

Medsafe and Medicine Approval

Before a medicine can be marketed in NZ, the sponsor must obtain consent from Medsafe. New chemical entities require a full data package (efficacy, safety, quality). The regulatory pathway includes pre-submission meetings, provisional consent, and consent with conditions. Section 29 of the Act allows unapproved medicines to be prescribed for individual patients when no suitable approved alternative exists — the prescriber assumes responsibility for the unapproved use.