L90: Powders 1 Flashcards
1
Q
what is a powder?
A
a collection of particles 10-100um in diameter)
2
Q
what the importance of powder properties?
A
- manufactor if the dosage form dependant on drug and excipient
- bioavailability of the drug, need to dissolve in GI tract
3
Q
absorption and dissolution rate of a drug depends on what key things?
A
particle size
4
Q
what is a particle made from?
A
crystalline mostly not necessarily single crystals though
5
Q
why is powder flow important?
A
- Uniformfeedintotabletingor capsule filling equipment, leading to uniform weight and mechanical properties
- Easeofhandlingandtransfer of powders
