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Flashcards in multiparticulate dosage form Deck (12)
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1

adv of spheroids as multi-unit dosage form in terms of therapeutics

1) minimize local irritation
2) maximize absorption / bioavailable
3) less susceptable to dose dumping
4) reduction in gastric emptying rates

2

adv of spheroids as multi-unit dosage form in terms of technological

1) superiority of coating
2) uniformity in packing
3) spherical in shape
4) good flow ability
5) low friability

3

extrusion-spheronization steps

1) dry blending
2) wet massing
3) extrusion
4) spheronization
5) drying

4

vegetarian capsule

HPMC
pullulan
carrageenan
alginate

5

tests for hard gelatin capsule

Assay
uniformity of dosage unit
dissolution
disintegration

6

adv for soft gelatin capsules

1) no compression stage, can contain poorly compressible drug
2) liquid fill avoids powder flow and mixing problems
3) avoid oxygen or moisture degradation of drug during long-term storage, protected by gelatin shell
4) for poorly water-soluble drugs, in a liquid vehicle, emulsified in GIT as fine droplets

7

fill material to avoid in soft capsule

1) emulsion
2) surfactant (affect gelating integrity)
3) pH <2.5 hydrolysis of gelatin
4) pH >7.5 tanning effect on gelatin, insolubility
5) aldehydes, cross-linking tanning effect

8

adv of controlled release system

1) extended daytime and night time activity of the drug
2) potential for reduced incidence of side effect
3) reduced dosage frequency
4) increased patient compliance
5) potential lower daily cost to patient (fewer dosage units used)

9

types of CDDS

1) matrix system (like layer)
2) coated system
- coated pellet

10

coating processes

1) compression
2) pan coating
3) air suspension (pellet; 2 methods, solution or suspensation (liquid layering))

4) spray coating
5) melt coating

11

preparaton for ion exchange mechanism of controlled drug release

1) resin and drug in solution
2) filter
3) wash
4) dry
5) formulate and tablet

12

problem for ionexchange drug

1) drug release depend only on ionic environment at absorption site and not on pH, enzyme content
- variability in GIT ionic content (varies with diet and water)

- limitation in drug loading (up to 200-300mg max)
- need suitable function groups