Powders and Granules

Question 1

What is a powder?

Answer 1

• A physical form of a solid material composed of particles
• Composed of solid particles and intended for external use or internal use only.

Question 2

What are the major types of powder dosage forms?

Answer 2

• Orally administered powder
• Topical powder
• Inhalation powder dosage form

Question 3

What are physicochemical properties of powders?

Answer 3

• Particle size
• Particle shape
• Particle density
• Solid state properties

Question 4

How does particle size impact the physicochemical properties of drugs?

Answer 4

Particle size or size distribution can affect processability of the powders (flow, mixing, and tableting) and formulation performance (content uniformity, dissolution etc).