How can I know doses and choice of drugs

Drugs choice and dose for a disease

Pharmacology and formulary-

Medical pharmacology taught in medical school contains drug's pharmacokinetics and pharmacodynamics. These contain drugs absorption, metabolism, excretion, action, side effects, toxic effects, drugs classification,mechanism of action, interactions. They usually don't say a drug's route of administration, dose, formulations, choices in different diseases, duration of treatment etc. This is described in formulary books. There are many formulary available. Among them BRITISH NATIONAL FORMULARY (BNF) is mentionable. There are lots of formulary. They are updated time to time according to large scale data analysis, whereas medical books are almost constant. For this reason, classical text book or treatment guidelines don't mention exact dose, duration, choice of drug etc usually. So, before prescribing a medicine just know the name of drug from current guidelines, then follow the FORMULARY BOOK for dose ,duration, route of administration, follow up advise, drug interactions, contraindications, side effects and investigation if needed for monitoring.

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