The CRA tests applied pharmacology — not isolated factual recall. The distinction matters for how you study: knowing drug names and classes is necessary but insufficient. You need to understand mechanisms, interactions, adverse effects, and contraindications well enough to identify problems and recommend solutions in clinical scenarios.
Depth Required
The exam does not test pure science ("describe the mechanism of ACE inhibition"). It tests application ("a patient with CKD, hyperkalaemia, and heart failure is prescribed ramipril — what is the most important concern?"). Every pharmacology question is wrapped in a clinical scenario requiring you to apply your knowledge to a specific patient situation.
Highest-Yield Drug Classes
Cardiovascular. ACE inhibitors, ARBs, beta-blockers, calcium channel blockers, statins, anticoagulants (warfarin, DOACs), antiplatelets, loop diuretics, thiazides. Know the interactions, contraindications, and monitoring for each. CNS. SSRIs, SNRIs, TCAs, antipsychotics (typical and atypical), antiepileptics, opioid analgesics, paracetamol, NSAIDs. Know serotonin syndrome risk combinations, QTc-prolonging drugs, and monitoring requirements. Antimicrobials. Antibiotics by class (penicillins, cephalosporins, macrolides, fluoroquinolones, tetracyclines, aminoglycosides) — know the spectrum, key side effects, and resistance patterns. Antifungals and antivirals at a higher level. Endocrine. Insulin regimens (basal-bolus, biphasic, fixed-dose), oral hypoglycaemics (metformin, sulfonylureas, SGLT2 inhibitors, GLP-1 agonists), levothyroxine, corticosteroids. Respiratory. SABAs, LABAs, ICS, LAMA, combination inhalers, leukotriene receptor antagonists.
Common Pitfalls
Confusing drugs within the same class (which statin has the most drug interactions?). Missing high-risk interactions (warfarin + macrolides, methotrexate + NSAIDs, lithium + ACEi). Not checking renal dose adjustments. Forgetting pregnancy contraindications (ACEi, statins, retinoids, valproate).
Study Approach
BNF for reference — read drug monographs systematically. Practice questions for application — the learning happens when you get a pharmacology question wrong and discover why. iatroX adaptive mode for spaced retention — ensuring drug knowledge stays accessible over months of revision.