International Journal of Respiratory Medicine

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Perspective - International Journal of Respiratory Medicine (2022) Volume 7, Issue 6

Dry powder formulation activity in the treatment of pneumonia

Lisa Diismon *

Department of Pharmacy, University of Medicine and Respiratory Research, Shanghai, China

*Corresponding Author:
Lisa Diismon
Department of Pharmacy
University of Medicine and Respiratory Research
Shanghai, China

Received: 11-Nov-2022, Manuscript No. AAIJRM-22-83666; Editor assigned: 14-Nov-2022, PreQC No. AAIJRM-22-83666 (PQ); Reviewed:28-Nov-2022, QC No. AAIJRM-22-83666; Revised:01-Dec-2022, Manuscript No. AAIJRM-22-83666 (R); Published: 08-Dec-2022, DOI: 10.35841/aaijrm-7.6.128

Citation: Diismon L. Dry powder formulation activity in the treatment of pneumonia. Int J Respir Med 2022;7 (6):128

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 The speciality of metabolic process medication (also referred to as pneumonic medication treats patients affected by diseases of the system respiratory (airways and lungs) like bronchial asthma, bronchitis, infectious disease, pneumonia, opening respiratory organ diseases, carcinoma, sleep connected disorders and allergic diseases amongst several others. Patients having symptoms like cough, expectoration, haemoptysis (blood in sputum), pain and dyspnoea square measure treated below this speciality.


Aerosols, Dry powder, Formulations, Respiratory, Airways, Lungs.


A dry-powder dispenser (DPI) could be a device that delivers medication to the lungs within the style of a dry powder. DPIs square measure ordinarily accustomed treat metabolic process diseases like bronchial asthma, bronchitis, pulmonary emphysema and COPD though DPIs (such as Inhalable insulin) have conjointly been utilized in the treatment of diabetes. [1].

Dry powder formulations

DPIs square measure an alternate to the aerosol-based dispensers ordinarily known as metered-dose inhaler (or MDI). The DPIs might need some procedure to permit a measured dose of powder to be prepared for the patient to require. The medication is usually command either in an exceedingly capsule for manual loading or in an exceedingly proprietary type within the dispenser. Once loaded or motivated, the operator puts the mouthpiece of the dispenser into their mouth and takes a pointy, deep inhalation (ensuring that the medication reaches the lower elements of the lungs), holding their breath for 5–10 seconds . [2]. There square measure a range of such devices. The dose be delivered is often but some tens of milligrams in an exceedingly single breath since larger powder doses may cause provocation of cough.

Activity of aerosols: Most DPIs have faith in the force of patient inhalation to board powder from the device and after break-up the powder into particles that square measure sufficiently small to achieve the lungs. For this reason, insufficient patient inhalation flow rates might cause reduced dose delivery and incomplete disaggregation of the powder, resulting in off device performance. Thus, most DPIs have a minimum breath effort that's required for correct use and it's for this reason that such DPIs square measure ordinarily used solely in older youngsters and adults . [3].

The pneumonic route has long been used for drug administration for each native and general treatment. It possesses many benefits, which might be classified into physiological, i.e., giant expanse, skinny animal tissue membrane, extremely vascularized, restricted catalyst activity and patient convenience, i.e., non-invasive, self-administration over oral and general routes of drug administration. However, the formulation of dry powder for pneumonic delivery is commonly difficult because of restrictions on mechanics size and also the lung’s lower tolerance capability as compared with associate degree oral route of drug administration. Numerous chemistry properties of dry powder play a serious role within the aerosolization, deposition and clearance on the tract. To organize appropriate particles with optimum chemistry properties for inhalation, numerous producing ways are established. The foremost of times used industrial ways square measure edge and spray-drying, whereas many alternative various ways like spray-freeze-drying, critical fluid, non-wetting templates, inkjet-printing, thin-film phase transition and hot-melt extrusion ways also are utilised. The aim of this review is to supply an outline of the tract structure, particle deposition patterns and potential drug-clearance mechanisms from the lungs . [4]. This review conjointly includes the chemistry properties of dry powder; numerous techniques used for the preparation of dry powders and factors poignant the clinical effectualness, similarly as numerous challenges that require being self-addressed within the future.

Aerosols and aerosol drug delivery systems: Metered-dose inhalers square measure a vital contributor to health care’s climate footprint. They contain high levels of hydro fluorocarbons that, once discharged into the atmosphere, act as potent greenhouse gases. Metered-dose inhalers square measure calculable to contribute three.1% of the carbon footprint of the National Health Service within the United Kingdom 2 and roughly zero.03% of annual world gas emissions. Dry powder inhalers square measure clinically acceptable and cost-efficient alternatives . [5].In the UK, the National Institute of Health associate degree Care Excellence (NICE) has developed an evidence-based call aid for patients with bronchial asthma, which has data regarding environmental impact, to help patients and health care professionals in choosing the foremost appropriate dispenser device.


Aerosols of dry powder square measure created by directional air through associate degree aliquot of loose powder. As a result of DPIs square measure breath-actuated, the necessity to synchronize inhalation with deed is eliminated. However, the dispersion of the powder into respirable particles relies on the creation of flow within the dispenser. Creation of this flow could be a operate of each the patient's ability to inhale the powder at a sufficiently high breath rate and also the style of the powder device. The look and performance characteristics of varied DPIs square measure mentioned in two recent reviews. This table conjointly indicates whether or not the device is of low, medium, or high resistance.


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