Pseudoephedrine為擬交感神經興奮劑,其血管縮作用可使鼻腔、支氣管黏膜之腫脹消失,減少充血和水腫現象。
Triprolidine為長效性抗組織胺劑,作用持續時間可達12小時。其兼具擬副交感神經遮斷作用而減輕鼻溢,對於過敏性鼻炎、竇炎等可緩解過敏現象。
Triprolidine
Elimination
Plasma t ½ is about 3 to 3.3 h.
Pseudoephedrine
Distribution
Distributes into breast milk.
Metabolism
Partially metabolized in the liver.
Elimination
Renal (55% to 75% as unchanged); acidic urine accelerates rate of excretion.
Onset
15 to 30 min.
Peak
30 to 60 min.
Duration
3 to 4 h; 8 to 12 h (extended-release).
Triprolidine
Alcohol, CNS depressants (eg, narcotics, sedatives)
Additive CNS depression possible.
MAOIs
Anticholinergic effects may increase.
Pseudoephedrine
Furazolidone, guanethidine, methyldopa
Increased BP.
MAOIs
Severe headache, hypertension and hyperpyrexia; can cause hypertensive crisis.
Urinary acidifiers (eg, ammonium chloride)
Increased elimination of pseudoephedrine.
Urinary alkalinizers (eg, sodium bicarbonate)
Decreased elimination of pseudoephedrine.
1.避免在睡前2小時以內服用。
2.勿與OTC藥物併用,因很多含有Ephedrine或其他類交感神經作用或其他抗組織胺類藥物,會強化本品的作用。
3.若有非常不安或過敏徵兆時應禁斷藥物。
八、內服液劑之使用原則:(94/11/1、97/3/1、97/12 /1)
(一)12歲(含)以下兒童得使用內服液劑(97/3/1)。
(二)不適合服用固型製劑之病人,如施行管灌飲食等,得依病情需要使用內服液劑(97/12/1)。
(三)非為兒童或吞嚥困難患者所設計之內服液劑,得依病情需要使用(97/12/1)。



