Pharmacy Calculations Books and Resources: Which Are Still Worth Using for CRA Part 1?

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Books teach the method. Q-banks test the application. Both have a role.

Classic textbooks: "Pharmacy Calculations" (Rees/Smith), "Pharmaceutical Calculations" (Ansel). Systematic coverage of all calculation types — IV infusion rates, dose adjustments, dilutions, concentrations, displacement values.

When books add value: Learning the mathematical method for unfamiliar calculation types. Understanding the reasoning behind each calculation approach. Building the foundation before timed practice.

When books are not enough: Books do not replicate CRA time pressure (3 minutes per question). Books do not use the free-entry format. Books cannot adapt to your weak calculation types.

Digital complement: Daily timed calculation practice on digital platforms. iatroX adaptive calculation questions. Pre-Reg Shortcuts timed calculation webinars.

BNF as a calculation resource: Many Part 1 questions require extracting dosing data from BNF-style entries. Practise this skill separately — the maths may be simple, but finding the correct data is where errors occur.

Strategy: Book for learning methods (first 2 weeks). Digital for timed practice (remaining weeks). BNF navigation practice throughout.

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