Q.I.D. is an abbreviation for the Latin term "quater in die," meaning four times a day. The following are related:QD: Once a day.BID: Twice a day.TID: Three times a day.QxH: Every x hours where the x...
The term 'prescription' has several senses or meanings: 1: a drug that is available only with written instructions from a doctor or dentist to a pharmacist; 2: available only with a doctor's written...