[REG-06] Community & Clinical Pharmacy Practice: Prescription Auditing, Medication Counselling, TDM & Beers Criteria

REG-06 • 11. Community Pharmacy

Learning Objectives

Audit a prescription systematically across its 4 classical parts (Superscription Rx, Inscription, Subscription, Signatura) and WHO Core Prescribing Indicators.; Apply Therapeutic Drug Monitoring (TDM) target windows and sampling times (Trough Cmin before next dose) for narrow-therapeutic-index drugs.; Use AGS Beers Criteria and STOPP/START criteria to deprescribe potentially inappropriate medications in geriatric patients.

Chapter Overview & Core Explanation

Clinical and community pharmacists act as the final safety barrier between a prescription and the patient—checking doses, renal function, allergies, look-alike/sound-alike (LASA) drug names, and therapeutic blood levels while counselling patients in plain language.

Key Exam & Clinical Takeaways

• In a prescription, the **Subscription** contains instructions to the Pharmacist, whereas the **Signatura (Sig.)** contains instructions to the Patient.
• Serum [11.24] Lithium levels must be drawn strictly as a standardized 12-hour post-dose trough after 5 days at steady state.

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