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They are directions indicating how many times per day the dose should be administered. It goes like this:

SID or QD = Once a day

BID = Twice a day

TID = Three times a day

QID = Four times a day

However, The Joint Commission which acredits hospitals and nursing homes has recommended that these abbreviations be discontinued because they lead to errors in dosing. Now, physicians must write out the words, "once a day," "twice a day" and so on.

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14y ago
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12y ago

qid four times daily

bid twice daily

tid three times daily

OS in left eye (oculo sinister)

sq subcutaneously

Oh and another one is QOD = Every Other Day :)

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14y ago

qid - 4 times daily

ud - as directed

od - right eye

ou - both eyes

os - left eye

sq - subcutaneous (for injectables)

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Q: What does qid bid tid in drug dose mean?
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It probably says bid which stands for twice daily, or qid which stands for three times daily. PID stands for pelvic inflammatory disease.

What does q6h in drug dose mean?

q6h stand for every 6 hours, q=every and h=hours so you can also take it to mean qid or four times daily though the doses should be about 6 hours apart.

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hi there its the same, i.e. bid=q12h tid=q8h qid=q6h

Using the Young's Rule callculate the dose for a child who is 2 years old and weighs 44 if the adult dose for a drug is 25mg qid.?

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What does PID mean on a prescription?

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".

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2 tablets should be given per dose. If its 100-mg and you need 800-mg a day and you are to take it four times a day (qid) then each dose should be 2 100mg tablets

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Vital signs qid is an instruction to check vital signs four times daily.

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Is this the correct way to abbreviation take medication 4 times a day q4d?

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Does qid mean in twelve hours?

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