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| My father has hypertension and diabetics. For medicines like aspirin & famotidine, he can purchase them directly from the pharmacy. However, for others like metformin, he needs a prescription from his doctor. Why so? | |
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Question:
My father has hypertension and diabetics. For medicines like aspirin & famotidine, he can purchase them directly from the pharmacy. However, for others like metformin, he needs a prescription from his doctor. Why so?
Answer:
In Singapore, medicines are classified into 3 categories by the Health Sciences Authority: Prescription Only Medicines (POM), Pharmacy Only Medicines (P) and General Sales List (GSL). The objective of such a classification is to prevent harm due to the inappropriate usage of medication, as all medicines have the potential to cause harm due to the inherent risks associated with the active chemical ingredients and their intended use.
Metformin, used for the treatment of diabetes mellitus, is a POM. One cannot purchase more than what is being prescribed by a doctor. Furthermore, for chronic diseases such as diabetes and hypertension, it is very important for patients to be followed up regularly by their doctors as these conditions are progressive in nature. The dosages of the medicines may need to be adjusted according to the patient’s condition.
Famotidine is a P medicine. P medicines can only be obtained from a pharmacy in the presence of a registered pharmacist. They do not require a prescription. However, for certain P medicines, there may be restrictions on the quantity that one can purchase. The pharmacist, upon evaluation of the symptoms, will be able to determine if these medicines are suitable for the patient.
Aspirin is a GSL medicine which can be purchased over the counter at any pharmacy or other retail outlets. Medicinal products classified as GSL medicines are preparations which are used for the treatment of minor ailments, that should only last for a few days. While GSL medicines are generally safe for short term self-medication, consumers should read the instructions carefully before taking the medicines. If the condition does not improve after a few days, appropriate medical advice should be sought.
If you are unsure whether the medicine you are taking requires a prescription, your pharmacist is the best person for you to check with. He/she is one who can provide advice on proper usage, recommend alternatives or refer you to a doctor.
Source: Maggie Tan, Pharmaceutical Society Of Singapore
More information and advice can be obtained from your neighbourhood pharmacist. Send your questions to sthealth@sph.com.sg
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