Formulary (pharmacy)

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A formulary is a list of pharmaceutical drugs, often decided upon by a group of people, for various reasons such as insurance coverage or use at a medical facility.^[1] Traditionally, a formulary contained a collection of formulas for the compounding and testing of medication (a resource closer to what would be referred to as a pharmacopoeia today). Today, the main function of a prescription formulary is to specify particular medications that are approved to be prescribed at a particular hospital, in a particular health system, or under a particular health insurance policy. The development of prescription formularies is based on evaluations of efficacy, safety, and cost-effectiveness of drugs.

Depending on the individual formulary, it may also contain additional clinical information, such as side effects, contraindications, and doses.

By the turn of the millennium, 156 countries had national or provincial essential medicines lists and 135 countries had national treatment.