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Antitussive properties of levodropropizine
S Malandrino1, G Melillo, A Bestetti
1Research & Development Laboratories, Dompé Farmaceutici S.p.A., Milan, Italy.
Arzneimittel-Forschung
|August 1, 1988
Summary
Levodropropizine demonstrates significant antitussive effects in animal models, comparable to codeine and dropropizine. This study confirms its efficacy as a cough suppressant across different administration routes and cough induction methods.
Area of Science:
- Pharmacology
- Respiratory Medicine
- Drug Discovery
Background:
- Cough is a common symptom requiring effective treatments.
- Levodropropizine is a peripherally acting antitussive agent.
- Understanding its efficacy compared to established agents is crucial.
Purpose of the Study:
- To evaluate the antitussive activity of levodropropizine.
- To compare its efficacy with codeine and dropropizine.
- To assess activity via different administration routes and cough stimuli.
Main Methods:
- Animal models including anesthetized guinea pigs and rabbits.
- Evaluation in unanesthetized guinea pigs.
- Mechanical, electrical, and irritant aerosol-induced cough models.
- Intravenous and oral administration routes.
Main Results:
- Levodropropizine exhibited good antitussive activity.
- Intravenously, it was 1/10 to 1/20 as active as codeine.
- Oral levodropropizine showed comparable activity to dropropizine and codeine against aerosol-induced cough.
Conclusions:
- Levodropropizine possesses significant antitussive properties.
- Its efficacy is comparable to dropropizine and codeine, particularly after oral administration.
- Supports levodropropizine's therapeutic potential for cough management.