q.p.m. means quaque die post meridiem - every day after noon in Prescription
Similar to q.p.m.
o.s. - oculus sinister - left eyeo.u. - oculus uterque - both eyes
od - oculus dexter - right eye
od - omne in die - every day/once daily preferred to qd in the UK[3]
om - omne mane - every morning
on - omne nocte - every night
o_2 - both eyes, sometimes written as o2
View all in Prescription