Calculating Quantities From Master Formula In extemporaneous dispensing a product is prepared and usually includes several ingredients. A List of the ingredients is provided on the prescription or is obtained from a recognised reference source where the quantities of each ingredient are indicated. It may be that this 'formula' is for the quantity requested, but more often the quantities provided by the master formula have to be scaled up or down depending on the quantity of the product you wish to prepare. Recognised reference source in Sri Lanka The British pharmacopeia (BP) British Pharmaceutical Cordex (BPC) United States Pharmacopoeia (USP) European Pharmacopoiea ( Pharmacopoeia Eropeana, Ph Eur) International pharmacopoeia (Ph.l) Japanese pharmacopoeia (JP) Fromularies The British National Formulary(BNF) Sri Lanka Hospital Formulary (SLHF) Ceylon Hospital Formulary (CHF) Reducing and Enlarging Formulae In the course of p...
Compounding in Pharmacy At one time, nearly all prescriptions were compounded. With the advent of mass drug manufacturing in the 1950s and ‘60s, compounding rapidly declined. The pharmacist’s role as a preparer of medications quickly changed to that of a dispenser of manufactured dosage forms, and most pharmacists no longer were trained to compound medications. However, the “one-size-fits-all” nature of many mass-produced medications meant that some patients’ needs were not being met. Pharmacy compounding is the art and science of preparing personalised medications for patients. Compounded medications are made based on a practitioners prescription in which individual ingredients are mixed together in the exact strength and dosage form required by the patient. This method allows the compounding pharmacist to work with the patient and the prescriber to customise a medication to meet the patient’s specific needs. ...