Introduction Most commercially-available dry powder inhaler (DPI) formulations utilize a carrier-based formulation concept. Utilizing a mixing process, micronized active pharmaceutical ingredient (API) particles are attached to the surface of larger excipient particles. Multiple studies list excipients such as mannitol, glucose monohydrate, trehalose, dextrose, maltose, sorbitol and maltitol fo...

The use of dry powder inhalers (DPIs) to administer treatments for respiratory diseases has increased significantly in recent years. There is now a wide range of DPIs available that vary considerably in design, required operational techniques, output characteristics and drug delivery across a range of inhalation patterns. Different patient populations may find individual types of DPI easier to ...

The output and size distribution of aerosols from dry powder inhalers are dependent on the flow rate through the device. Therefore, in an in vivo study, we examined the flow-dependency of the effect of formoterol when delivered from a dry powder inhaler, the Aerolizer, in a flow range relevant to schoolchildren. In a preliminary study comprising 126 asthmatic children aged 3-10 yrs, the relatio...

Dry powder inhalers (DPIs) are distinguished from one another by their unique device geometries, reflecting their distinct drug detachment mechanisms, which can be broadly classified into either aerodynamic or mechanical-based detachment forces. Accordingly, powder particles experience different aerodynamic and mechanical forces depending on the inhaler. However, the influence of carrier partic...

BACKGROUND Formoterol, a new beta 2 agonist, is long and fast acting when given as an aerosol. The aim was to determine the onset and duration of bronchodilatation with formoterol as a dry powder compared with salbutamol dry powder and with placebo. METHODS Fifteen patients with stable asthma with a reversibility of 15% or more participated in a double blind, within patient study. On five dif...

BACKGROUND Inadequate technique reduces the effects of inhalation medication. Errors in inhalation technique have been reported to range up to 85%. Not only various patients' characteristics but also the device has an effect on correct inhalation technique. The purpose of this study was to determine the effect of patients' characteristics and type of inhaler device on inhalation technique in pa...

We have developed an innovative soluble galenic form to overcome the low absorption of trans-Resveratrol (t-Res) as a dry powder. We present here data on pharmacokinetics, bioavailability, and toxicity of t-Res in human volunteers treated with this soluble form, plus additional data on biological effects in rodents. Fifteen healthy volunteers of both sexes received 40 mg of t-Res in two forms, ...

Granulation methods are used in the pharmaceutical sector to enlarge and densify small powder particles into larger ones, typically to improve powder flow so that the material can be processed effectively and efficiently into solid dosage forms. In addition, granulation methods are important for “locking in” the API within the formulation, thereby reducing the risk of segregation. Granulated ma...

The present research consisted of producing 3 types of powdered concentrates: the dairy, the egg and the dairy-egg (produced from a blend of raw liquid milk and liquid eggs). The dairy-egg powder was produced in order to facilitate formulation of dry food mixes. Powders were vacuumpackaged and packaged in air atmosphere and stored for 24 months. Changes in contents of selected oxysterols (deter...