Aerosol preparations

Aerosol preparations are veterinary drugs in special containers under gas pressure, containing one or more active ingredients, and are solutions, emulsions or suspensions. When the valve is pressed, the preparations are released in the form of an aerosol - a dispersion of solid or liquid particles in gas, the size of which depends on the purpose.

The widespread popularity of the use of veterinary drugs under pressure is determined primarily by their high therapeutic efficacy, ease of use, and cost-effectiveness.

Advantages of aerosol preparations

An aerosol is a dispersed system consisting of small particles suspended in a gaseous medium. The dispersed phase of aerosols can consist of liquid droplets and solid particles, if they do not precipitate. The particle sizes in aerosols vary from a few millimeters to 10-7 mm. Aerosols are formed by mechanical grinding and atomization of solids or liquids: by crushing, abrasion, combustion, or atomization in a spray gun.

The peculiarities of aerosols are the low viscosity of the gas dispersion medium and the large range of gas molecules compared to the size of the particles. Therefore, despite the relatively large size of the particles in aerosols, intense Brownian motion occurs.

There are two-phase and three-phase aerosols. In the first, the gas phase consists of vapor and concentrate. The size of the sprayed droplets depends on the ratio of fuel and concentrate: the less concentrate, the smaller the droplets (5-10 microns). Three-phase aerosols are formed if the concentrate solution does not mix with the liquid propellant.

  • Their use is characterized by: convenience, aesthetics, hygiene, speed and effectiveness of treatment;
  • The presence of high efficiency of action with relatively low consumption of the medicinal substance;
  • Ensuring accurate dosing of medications when using dosing devices;
  • The aerosol container is hermetically sealed, which eliminates contamination of the drug from the outside;
  • Hermetic packaging protects the drug from drying out, exposure to light and moisture;
  • Veterinary drugs under pressure remain sterile throughout their shelf life;
  • With a large number of manipulations, the number of service personnel is reduced.
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