The number of doses (pills, injections, and so on) to be taken at one time, denoted as "i, ii, iii or iiii" for 1, 2, 3 or 4; often the term "sig" will appear just in front of these (short for the Latin,
signetur, or "let it be labeled").
The mode of administration:
- po — from the Latin per os, or "by mouth" or "orally"
- pr — from the Latin per rectum, or "by way of the rectum," meaning by suppository
- sl — sublingual (under the tongue)
- IV — intravenous
- IM — intramuscular (in the muscle)
- SQ — short for subcutaneous (meaning under the skin)
The frequency of administration:
- qd — every day, from the Latin quaque die,
- bid — twice a day, from the Latin bis in die
- tid — three times a day, from the Latin ter in die
- qid — means four times a day, from the Latin quater in die
prescription pad 
العرض العادي
