means enough medication for 90 days......................
90 degrees of a right angle.
On a prescription if it says take 1 Q D S it usually means take 1 tablet 4 times a day
Once a day
Prescription
Prescription Radix.
Prescription (medicine)
The initials "PBR" stand for the perscriber of the medication.
Recommended Dose.
It stands for a quail bird
Every other day
The D does not stand for anything. It is simply a D.
The DS stands for days supply on an antibiotic prescription. Days supply means how many days the prescription should last if the prescription is taken as directed.