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AMA style avoids use of this abbreviation (spell out "every day") q.d.a.m. quaque die ante meridiem: once daily in the morning q.d.p.m. quaque die post meridiem: once daily in the evening q.d.s. quater die sumendus: 4 times a day can be mistaken for "qd" (every day) q.p.m. quaque die post meridiem: every evening (every day after noon) q.h ...
every day / daily quaque die q.h.s., qhs every night at bedtime quaque hora somni q.d.s, qds, QDS 4 times a day quater die sumendum q.i.d, qid 4 times a day quater in die q.h., qh every hour, hourly quaque hora q.o.d., qod every other day / alternate days quaque altera die q.p.m., qPM, qpm every afternoon or evening: quaque post meridiem q.s., qs
The defined daily dose ( DDD) is a statistical measure of drug consumption, defined by the World Health Organization (WHO) Collaborating Centre for Drug Statistics Methodology. It is defined in combination with the ATC Code drug classification system for grouping related drugs. The DDD enables comparison of drug usage between different drugs in ...
The ATC system also includes defined daily doses (DDDs) for many drugs. This is a measurement of drug consumption based on the usual daily dose for a given drug. According to the definition, "[t]he DDD is the assumed average maintenance dose per day for a drug used for its main indication in adults." [15]
every day before noon (from Latin quaque die ante meridiem ) q.d. every day (from Latin quaque die) q.d.s. four times each day (from Latin quater die sumendus ) q.h. each hour (from Latin quaque hora ) q.h.s. every bedtime (from Latin quaque hora somni )
Prescribed daily dose. Prescribed daily dose ( PDD) is the usual dose of medication calculated by looking at a group of prescriptions for the medication in question. [1] At times the PDD needs to be related to the condition being treated.
Acceptable daily intake or ADI is a measure of the amount of a specific substance (originally applied for a food additive, later also for a residue of a veterinary drug or pesticide) in food or drinking water that can be ingested (orally) daily over a lifetime without an appreciable health risk. [1] ADIs are expressed usually in milligrams (of ...
Trough level. In medicine and pharmacology, a trough level or trough concentration ( Ctrough) is the concentration reached by a drug immediately before the next dose is administered, [1] [2] often used in therapeutic drug monitoring. The name comes from the idea that on a graph of concentration versus time, the line forms a U-shaped trough at ...