t.i.d. means three times a day. It is an abbreviation for the Latin phrase "ter in die," which means "three times a day." Also abbreviated as tid (without periods) and TID (all upper case).
Other medication prescription terms include:
q.d. (qd or QD) - once a day; abbreviated from the Latin phrase "quaque die," which means "once a day."
b.i.d (bid or BID) - two times a day; abbreviated from the Latin phrase "bis in die," which means "twice a day."
tid prn means three times daily as directed
t=tablet po=by mouthtid =three times per day prn=as needed. So for example if you had a prescription that read "tormoxin 250mg t po tid prn" it can be interpreted to mean tormoxin 250mg tablets by mouth three times per day as needed.
TID means three times a day.
"TID" stands for "three times daily."
TID - three times a day PO - by mouth
TID means 3 times a day.
The term "PO TID" on a doctor's prescription or order would mean: "by mouth, three times daily". PO means by mouth. This medical abbreviation, which is also written as: p.o. or po (lower case), comes from the Latin phrase "per os". The term TID means three times daily, or three times per daily. This medical abbreviation, which is also written as: t.i.d. or tid (lower case), comes from the later phrase "ter in die".
It comes from the Latin phrase, "ter in die" meaning "three times per day." For example if your prescription was written as: Amoxicillin 250mg 1 cap po tid x 10 days (usually in almost illegible handwriting!) This would mean you are to take one Amoxicillin 250mg capsule by mouth three times daily for 10 days. ("po" is another Latin phrase, "per os" or "by mouth")
Typically DF is not written on a prescription to tell you how often to take a tablet. It is normally written qd, bid, and tid (once, twice, three times a day).
PID is not an abbreviation in common usage for prescriptions. BID means twice daily, TID means three times daily, QID means four times daily, and PRN means "as needed".
In traditional prescription writing, you write ii tab tid.
This is a prescription meaning that you have a prescription for 120 tablets of Atarax 10 mg (hydroxyzine 10 mg) that should be took as 1 or 2 tablets 3 times a day (every 6-8 hours) if needed (if itching)