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Terbutaline sulfate (4 × 0.250 mg) was given to 11 healthy volunteers by inhalation from a metered dose inhaler (MDI), with and without oral administration of a charcoal slurry. Before the inhalations, the adsorbing capacity of the charcoal slurry was tested. Deuterated terbutaline, 0.125 mg, was given intravenously at the same time as the test doses. The charcoal slurry adsorbed 97% of an oral dose...
Pressurized metered dose inhaler (MDI) output from three different albuterol formulations was characterized using three inertial separation devices. Results were compared for the Delron six-stage cascade impactor (DCI6), the Andersen Mark II eight-stage impactor (ACI8), and Copley's twin-stage liquid impinger (LI). None of the devices tested in this study was ideal in all respects. All devices could...
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