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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
3 times a day t.i.d., t.d. ter in die: 3 times a day AMA style avoids use of this abbreviation (spell out "3 times a day") tinct. tinctura: tincture t.i.w. 3 times a week mistaken for "twice a week" top. topical TPN total parenteral nutrition tr, tinc., tinct. tinctura: tincture trit. triturate: grind to a powder troch. trochiscus: lozenge tsp
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) q.i.d. four times each day (from Latin quater in die) (not deprecated, but consider using "four times a day" instead. See the do-not-use list) QIDS
Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").
Once a day otc Over the counter (bought medication) P Pharmacy (drug) POM Prescription-only medicine prn When required q Every (e.g. q2h – every two hours) qds/qid Four times a day Rx Prescription tds/tid Three times a day ung Ointment
TID - three times a day / Latin: ter in die: Existing QID - four times a day / Latin: quater in die: Existing 6WK - six times a week 5WK - five times a week 4WK - four times a week 3WK - three times a week 2WK - twice a week: I dispute this, more likely "1 qds for 2wk" meaning 1 taken 4 times a day for 2 weeks QWK - once a week
three times a day (from Latin ter die sumendus) TdT: terminal deoxynucleotidyl transferase: TD: Tardive dyskinesia: TE: tracheoesophageal Or Toxoplasmic Encephalitis TEB: thoracic electrical bioimpedance (see impedance cardiography) TEC: transient erythroblastopenia of childhood: TEE: transesophageal echocardiogram: TEF: tracheoesophageal ...
Where possible, usage directions should specify times (7 am, 3 pm, 11 pm) rather than simply frequency (three times a day) and especially relationship to meals for orally consumed medication. The use of permanent ink is encouraged. Avoiding units such as "teaspoons" or "tablespoons".