Chap 7 Flashcards
(41 cards)
solid dosage forms which medicinal agents
and or inert substances are enclosed in a small edible shell usually made of gelatin
CAPSULES
obtained by the PARTIAL HYDROLYSIS OF COLLAGEN obtained from the skin, white connective tissue and bones of animals and seaweeds.
GELATIN
TYPES OF GELATIN
TYPE A
TYPE B
. TYPE A is made through
acid hydrolysis
TYPE B is made through
alkali hydrolysis
Hard gelatin capsules has a
Body
Cap
CHARACTERISTICS OF GELATIN
Stable in air
Soften in cold water
Soluble in hot water
Digested by proteolytic enzymes.
Employed in clinical drug trials to compare the effects of an investigational drug with those of another drug product or placebo; It is Employed in the extemporaneous compounding of
prescription in community setting
HARD GELATIN CAPSULES (HGC)
(DRY-FILLED CAPSULES)
COMPONENTS OF HGC:
- Gelatin
- Sugar
- Water
- FD&C and D&C dyes (color)
- Titanium dioxide (opaque)
- Sulfur dioxide 0.15% (preservative)
CHARACTERISTICS: of HGC
Moisture content: 13% -16%
Storage condition & difficulties encountered of HGC
HIGH HUMIDITY: distorted and lose their rigid shape
EXTREME DRYNESS: Brittle and crumble
Are made of gelatin to which glycerin or
polyhydric alcohol such as sorbitol or has been added and is Elastic
SOFT GELATIN CAPSULES
CHARACTERISTICS of SGC
Moisture content: 6%-10%
Physical appearance:
Oblong, oval or round
Single-colored or two-tone
ENCAPSULATED WITH SGC
- Pumpable solutions
- Suspensions
- Pastry materials
- Powders
- Liquids
Types of liquid used
Water-immiscible volatile & non-volatile liquids (vegetables and aromatic
oils)
Water- miscible non-volatile liquids
(polyethylene glycols)
Water-miscible & relatively non-volatile
(isopropyl alcohol)
CAPSULE SHELL PRODUCTION:
- Dipping
- Drying
- Trimming
- Removing
- Joining
MANUFACTURE OF HGC SHELLS
- Capsule body
- Shorter cap
shells are produced industrially by the
mechanical dipping of PINS OR PEGS
(made of manganese bronze) of the desired shape and diameter into temperature and controlled reservoir of melted gelatin.
Shorter cap
Soft gelatin capsules may be prepared by:
Plate process (molder)
Rotary die process
Reciprocating die process
hard gelatin capsules may be prepared by:
PIN METHOD (CENTRIFUGAL CASTING)
Preparation of Filled Hard Gelatin
Capsules
- Developing and preparing the formulation
and selecting the capsule size. - Filling the capsule shells
- Capsule sealing (optional)
- Cleaning and polishing the filled capsules
Each capsules is weighed individually after filling through punch method to ensure accuracy
PUNCH METHOD
Used in regular or extensive basis of filling capsule
HAND OPERATED FILLING MACHINE
FILLING OF EMPTY HGC
(LARGE SCALE)
- SUPPLY
- RECTIFICATION
- SEPARATION
- JOINING
- POLISHING AND CLEANING