Synopsis
Turn an agreed treatment decision into a complete, unambiguous prescription that another professional can dispense and administer, and that the patient can follow.
- Check the patient, indication, allergy history and relevant organ function before writing the medicine order; a perfectly formatted prescription can still be clinically wrong.
- Specify medicine, formulation, strength when needed, dose, route, frequency and duration or review date. Add a maximum dose and indication to an as-needed instruction.
- Use a leading zero for a dose below one, avoid unnecessary trailing zeros, and write micrograms and units in full where abbreviation could create a dangerous misreading.
Reasoning priorities
Identify duplicate treatment, recent doses and relevant interactions.
Review actual administrations as well as active orders, especially after ambulance or emergency treatment. A new inpatient chart can omit a dose already given elsewhere. Include non-prescription medicines when they share an active ingredient or change the safety of the proposed regimen.
Worked reasoning
Alex Morgan, date of birth 12 May 1962, training identifier LAB001, has a COPD exacerbation for which amoxicillin has been selected. No known drug allergy is confirmed; renal function is stable and normal, swallowing is safe, and no antibiotic doses have yet been given. Available capsules contain 500 mg.
- Confirm the selection against the supplied diagnosis and safety information, then use the NICE NG114 adult regimen of amoxicillin 500 mg orally three times daily for 5 days. The clinical decision is a finite course, so an indefinite repeat order would not describe it.
- Convert dose to formulation units: 500 mg required divided by 500 mg per capsule equals 1 capsule each dose. Calculate supply as 1 capsule × 3 doses per day × 5 days = 15 capsules; no previous administrations need to be subtracted.
- Write the final order with the supplied patient identifiers, prescribing date 7 September 2026, amoxicillin 500 mg capsules, dose 500 mg, oral route, three times daily for 5 days, quantity 15 and the COPD-exacerbation indication. Add the prescriber authentication required by the prescribing system.
- Independently verify that 15 capsules divided by 3 daily doses supplies 5 days, that the route is oral and the product is a capsule, and that no allergy or duplicate course is present. Give practical dose-spacing advice and a review plan if symptoms worsen or fail to improve.