The BNF is not just a reference tool for pharmacists — it is directly tested in the CRA. Your ability to navigate it quickly, extract relevant information, and apply it to clinical decisions is a core competency that the exam assesses.
BNF Structure
Drug monographs. The core of the BNF. Each monograph covers: indications, cautions, contraindications, hepatic/renal impairment adjustments, pregnancy/breastfeeding advice, side effects, dose, and interactions. Monographs also include monitoring requirements and counselling points. Treatment summaries. Management pathways organised by condition — useful for understanding how drugs fit into treatment algorithms. Interactions appendix. Searchable drug interaction tables with severity ratings. Prescribing guidance. Special population prescribing (elderly, children, pregnancy, breastfeeding, renal impairment, hepatic impairment), palliative care, wound management, and controlled drugs.
Key BNF Sections for CRA
Interactions (high-yield drugs: warfarin, methotrexate, lithium, phenytoin, digoxin, carbamazepine — these have interactions that are frequently tested). Dose adjustments in renal impairment (BNF provides specific guidance per drug — questions often hinge on whether you checked this). Prescribing in pregnancy and breastfeeding (the CRA regularly asks about medication safety in pregnancy). Cautionary and advisory labels (patient counselling points). Controlled drugs schedules (legal classification and prescribing requirements).
Daily BNF Practice
Pick 2-3 drugs per day. Read their full monograph — not skimming, but actively noting: indications, key cautions, important interactions, monitoring requirements, dose adjustments. Then test yourself: "What are the key interactions for amiodarone?" "What dose adjustment is needed for metformin in CKD stage 3b?" "Is sertraline safe in breastfeeding?" Build this into your daily routine from the start of revision — BNF familiarity compounds over months.
BNF Online vs Print
BNF online is faster for specific drug searches. But building structural familiarity — knowing where information lives before you search for it — requires regular use. Many candidates use online BNF for daily reference and practice BNF navigation speed as a separate study activity.