Pharmacology

Pharmacology: learn the class, and the drugs come mostly free

Pharmacology looks like the worst kind of memorisation: hundreds of drugs, each with a mechanism, a set of indications, a list of contraindications, and a web of interactions. Studied drug by drug, it is genuinely impossible. Studied by class, most of it collapses into a much smaller number of things — and the exceptions become the only part you actually have to grind.

6 min readSubjects

The class carries almost everything

Learn what a beta blocker *does* — the mechanism, the predictable consequences, the predictable side effects — and you have most of what you need for every beta blocker. The mechanism generates the side effects rather than sitting beside them on a list: bradycardia and bronchospasm are not facts to memorise, they are things you can *derive* once you know what the receptor does.

This is where elaborative interrogation earns its keep. For every side effect, ask *why*. If you can derive it from the mechanism, you never have to memorise it; if you cannot, you have found something genuinely arbitrary, and now you know it needs a card.

So what is genuinely arbitrary

  • Names. Nothing about a drug's mechanism tells you what it is called. Pure memory. Use the stems — -olol, -pril, -statin — because the naming conventions are the one gift pharmacology gives you.
  • Doses and numbers. Arbitrary and safety-critical.
  • The exceptions. The drug in the class that behaves unlike the class. These are the most examined facts in the entire subject, precisely because they punish anyone who only learned the pattern.
  • Interactions. Combinatorial and unforgiving.

That residue — names, numbers, exceptions, interactions — is a pure volume problem, and volume problems are solved by FSRS. Card it from your own module's drug list, because formularies and first-line choices differ by country and by guideline, and a downloaded deck may be quietly teaching you another health system's practice.

Common questions

How do I memorise so many drugs?

Learn by class, not by drug. The mechanism generates most of the side effects and indications, so you can derive them rather than memorise them. What's left — names, doses, exceptions — is a spaced repetition problem.

What's the fastest way to learn drug side effects?

Ask why each one follows from the mechanism. Anything you can derive doesn't need a card. Anything you can't is genuinely arbitrary and does.

Should I use a premade pharmacology deck?

Cautiously — formularies, first-line choices and guidelines differ by country, and spaced repetition will make any mismatch permanent. Build from your own module's drug list where you can.

Try it on your own material

Upload your notes, slides or lecture recordings and get a tutor that answers only from them — and says so when they don't cover it.

$12/month, or $8/month billed yearly · cancel in two clicks