From: Prescription Writing 101 (with Example Prescriptions)
Medication order ( 500mg, 2tabs, twice a day) meets #2 of above standards:
Medication name, strength= 500mg, amount to be taken = 2 tabs, needs route = oral ( suspect Dr. assuming that tablets taken orally), frequency= 2x day .
That's how I was taught to interpret medication orders and have done so for 40+ years, especially in last home health positions as Central Intake Mgr. + Quality assurance reviewing thousands of medication orders weekly.
When interpreting it may be helpful to add "take" after dose listed
(500mg, take 2 tabs, twice a day). Additionally, nurse needs to consider if medication being prescribed + dosage written is usual standard for that medication along with used for patients diagnosis
Years ago, I prevented medication error in report told that doctor wanted med given STAT and order hand delivered to pharmacy--- old school med written as Aldomet 300mg IV Q6 hrs for patient with suspected GI bleed.
BP was 130/70 (WNL, Aldomet not indicated for client without HTN DX, usual dose dose Aldomet 250mg or 500mg, never seen 300mg dose). So called Doc--he meant to write for Tagamet, he came to floor rewrote order.
In LTC setting, I'd check med bottle + query pharmacist who dispensed med, otherwise call doctor for clarification.