Effects and handling of almitrine bismesylate in healthy subjects.
Almitrine bismesylate was administered to young, healthy, non-smoking male subjects as single oral doses, multiple oral doses and multiple oral doses with food. A variety of physiological parameters and blood parameters were tested at specified times in relationship to drug ingestion, and multiple blood samples for plasma almitrine bismesylate levels were obtained. Evaluation of the data revealed almitrine bismesylate to be safe at all doses tested, up to 400 mg per day, with symptoms of mild nausea and headache occurring most frequently when the drug was administered in the fasting state. A striking complaint of shortness of breath on exertion was reported by subjects, with increased frequency and severity related to total amount of drug ingested and level of physical activity. Increased oxygen uptake and tidal volume were found after multiple oral dosing. Plasma almitrine bismesylate levels were highly variable, and marked individual differences in peak levels and terminal phase rate constants and half lives were found. Multiple oral dosing, either fasting or with food, significantly prolonged the terminal phase half life when compared to single oral dosing.[1]References
- Effects and handling of almitrine bismesylate in healthy subjects. MacLeod, C.N., Thomas, R.W., Bartley, E.A., Parkhurst, G.W., Bachand, R.T. European journal of respiratory diseases. Supplement. (1983) [Pubmed]
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