A process to produce effervescent tablets: fluidized bed dryer melt granulation

Area of Science:

• Pharmaceutical Technology
• Materials Science
• Chemical Engineering

Background:

• Effervescent granules are widely used in pharmaceutical formulations for improved drug delivery and patient compliance.
• Traditional granulation methods can be complex and time-consuming, necessitating the development of more efficient processes.
• Fluidized bed technology offers potential for streamlined granulation processes.

Purpose of the Study:

• To investigate the application of fluidized bed dryer melt granulation for the one-step manufacturing of effervescent granules.
• To identify critical process parameters influencing the characteristics of effervescent granules and resulting tablets.

Main Methods:

• Melt granulation of anhydrous citric acid and sodium bicarbonate was performed in a fluidized bed dryer.
• Process parameters studied included polyethylene glycol (PEG) 6000 concentration and fineness, residence time, initial mixture fineness, and lubricant efficiency.
• Granule and tablet characteristics were evaluated based on these parameters.

Main Results:

• Fluidized bed dryer melt granulation proved to be a viable one-step process for effervescent granule production.
• Significant impacts of PEG 6000 concentration and fineness, residence time, initial mixture fineness, and lubricant efficiency on granule and tablet properties were identified.
• The dry granulation process demonstrated simplicity, speed, effectiveness, and reproducibility.

Conclusions:

• Fluidized bed dryer melt granulation is a highly effective, economical, and reproducible method for producing effervescent granules.
• This technique is particularly well-suited for manufacturing effervescent tablets due to the ease of compression of the produced granules.
• Optimization of process parameters is crucial for achieving desired granule and tablet characteristics.