MOD 2 Flashcards
- a mixture of finely divided drugs from the comminution of chemicals in dry form.
- The powder may be used internally or externally.
POWDERS
ADVANTAGES OF POWDERS
- Flexibility of compounding
- Good chemical stability
- Rapid dispersion of ingredients because of the small particle size
DISADVANTAGES
- Time-consuming preparation
- Inaccuracy of dose
- Unsuitability for many unpleasant-tasting, hygroscopic, and deliquescent drugs
determined by the size of sieve they will pass through generally range from 0.1 to 10 micron in size
PARTICLE SIZE
indicates the number of openings in the mesh screen per inch.
SCREEN SIZE
medicated powders usually present in large quantities or volumes and are limited to non-potent substances
BULK POWDERS
- dispensed in individualized doses
- potent
- examples of these powders are dusting powder, oral powders, triturations, douche, insufflations, and dentifrices.
DIVIDED POWDERS
- Continuous rubbing or grinding of the powder in a mortar with a pestle
- Product: dry powder
TRITURATION
TYPE OF MORTAR & PESTLE
for solids to aid in dissolution in liquids
WEDGEWOOD
TYPES OF MORTAR & PESTLE
- liquids & semisolids
- nonporous & non staining
GLASS
- Triturating it in a mortar and pestle or using an ointment slab and spatula.
- This method is often used to prevent a gritty feel when solids are incorporated into dermatologic or ophthalmic ointments and suspensions.
- Products: paste
LEVIGATION
common levigating agent
MINERAL OIL
GLYCERIN
- using an additional materials in which that material is soluble - a volatile solvent that evaporates
- The dissolved powder is then mixed in a mortar or spread on an ointment slab to enhance the evaporation of the solvent. As the solvent evaporates, the powder will recrystallize out of solution as fine particles
- This technique is often used with gummy substances that reagglomerate or resist grinding
- By grinder & mill
PULVERIZATION BY INTERVENTION
Example of volatile solvent
ALCOHOL
ACETONE
- A spatula is used to blend small amounts of powders on a sheet of paper or a pill tile.
- This method is not suitable for large quantities of powders or for powders that contain potent substances because homogeneous blending may not occur.
- This method is particularly useful for solid substances that liquefy or form eutectic mixtures (i.e., mixtures that melt at a lower temperature than any of their ingredients) when in close, prolonged contact with one another because little compression or compaction results.
SPATULATION
These substances include phenol, camphor, menthol, thymol, aspirin, phenylsalicylate, and phenacetin.
EUTECTIC MIXTURES
To diminish contact, powders prepared from eutrectic mixtures are commonly mixed with an
INERT DILUENT
prevents eutexia with aspirin, phenylsalicylate, and other troublesome compounds
SILICIC ACID (20%)
- If comminution is desired, a porcelain or ceramic mortar with a rough inner surface is preferred to a glass mortar with a smooth working surface.
- A glass mortar is preferable for chemicals that stain a porcelain or ceramic surface as well as for simple admixture of substances without special need for comminution. A glass mortar cleans more readily after use.
TRITURATION
- is used when potent substances must be mixed with a large amount of diluent.
- The potent drug and an approximately equal volume of diluent are placed in a mortar and thoroughly mixed by trituration.
- A second portion of diluent, equal in volume to the powder mixture in the mortar, is added, and trituration is repeated. The process is continued; equal volumes of diluent are added to the powder mixture in the mortar until all of the diluent is incorporated.
GEOMETRIC DILUTION
- Powders are mixed by passing them through sifters similar to those used to sift flour.
- This process results in a light, fluffy product. Usually, it is not acceptable for incorporating potent drugs into a diluent base.
SIFTING
- is the process of mixing powders in a large container rotated by a motorized process.
- These blenders are widely used in industry, as are large-volume powder mixers that use motorized blades to blend the powder in a large mixing vessel.
TUMBLING
dispensed in bulk containers such as perforated or sifter can, aerosol container and wide-mouthed glass jar
BULK
dispensed in papers that are properly folded and placed in re sealable plastic
DIVIDED POWDERS
SOLUTIONS
Volatile substances (e.g., camphor, menthol, essential oils) can be lost by volatilization after they are incorporated into powders.
USE OF HEAT SEALED PLASTIC BAGS or DOUBLEE WRAPING WITH WAXED OR GLASSINE PAPER
can be added to increase the absorbability of the powders by increasing the surface area
MAGNESIUM CARBONATE
STARCH
LACTOSE
SOLUTION
Hygroscopic and deliquescent substances that become moist because of an affinity for moisture in the air
ADDING INER DILUENTS
DOUBLE WRAPPING
inert diluent for eutectic mixtures
LIGHT MAGNESIUM OXIDE
MAGNESIUM CARBONATE
substances are wrap in wax paper then wax paper will be wrapped with bond paper
DOUBLE WRAPPING
hygroscopic, deliquescent, or volatile powders should be packed in ____ rather than pasteboard containers
GLASS JARS
should be used if needed to prevent decomposition of light-sensitive components
AMBER
GREEN GLASS
all powders should be stored in
TIGHTLY LOSED CONTAINERS
SYNONYM
ASPIRIN DIVIDED POWDERS
ASPIRIN CHARTS
ASPIRIN CHARTULAE
USE/S
ASPIRIN DIVIDED POWDERS
ANALGESIC
ANTI INFLAMM
ANTIPYRETIC
ANTITHROMBOTIC
many use due to dose-dependent effects
ASPIRIN DIVIDED POWDERS
METHOD
ASPIRIN DIVIDED POWDERS
BLOCK & DIVIDE
APPROPRIATE CONTAINER
ASPIRIN DIVIDED POWDERS
WAX PAPER / RESEALABLE PLASTIC
ASPIRIN DIVIDED POWDERS
API
ASPIRIN
ASPIRIN DIVIDED POWDERS
DILUENT
LACTOSE
- a dosage form composed of dry aggregates of powder particles that may contain one or more active pharmaceutical ingredients (APIs), with or without other ingredients.
- particles ranging in size from about 4 to 10 mesh
- can be dispersed in food or Dissolved in water
- can be used in other dosage form such as making a compacted tablet or filled in the capsule with or without excipients
GRANULES
- poor flow properties
- less stable
- more likely to harden / cake
- drug float on surface; difficult to make solution
- poor compressibility
- non uniform dosing
- more dust
- less appealing
- simple method
POWDERS
- flow well
- less surface area
- more stable
- less likely to harden
- easily wetted
- good compressibility
- less dust
- more elegant appearance
- involves more processing
GRANULES
- Production of a moist mass by heating the ingredients sufficiently to drive off the water of hydration from the uneffloresced citric acid, forcing the mass through a coarse sieve and drying in an oven.
- The product should be dispensed in tightly closed glass container to protect it against humidity and air.
DRY METHOD / DRY FUSION METHOD
It involves the addition of small amounts of water to the dry salts to obtain a workable mass which is then dried and ground to yield the powder or granule.
WET METHOD / WET FUSION METHOD
SYNONYM
SODIUM PHOSPHATE EFFERVESCENT GRANULE
SODII PHOSPHAS EFFERVESCENTES
USE/S
SODIUM PHOSPHATE EFFERVESCENT GRANULE
SALINE LAXATIVE
METHOD OF PREPARATION
SODIUM PHOSPHATE EFFERVESCENT GRANULE
DRY FUSION METHOD
APPROPRIATE CONTAINER
SODIUM PHOSPHATE EFFERVESCENT GRANULE
WIDE MOUTH BOTTLE
STORAGE CONDITION
SODIUM PHOSPHATE EFFERVESCENT GRANULE
PROTECT FROM AIR & HUMIDITY
SODIUM PHOSPHATE EFFERVESCENT GRANULE
API
SODIUM PHOSPHATE
SODIUM PHOSPHATE EFFERVESCENT GRANULE
ALKALINIZER
SODIUM BICARBONATE
SODIUM PHOSPHATE EFFERVESCENT GRANULE
ACIDIFIER
CITRIC ACID
TARTARIC ACID
Also referred to as the “dry-filled capsules”
CAPSULES
derived from pork skin by acid processing
TYPE A GELATIN
obtained from bones and animal skins by alkaline processing
TYPE B GELATIN
added to capsule formulations to enhance drug dissolution
WETTING AGENTS
CAPSULE
LUBRICANT
MAGNESIUM STEARATE
CAPSULE
WETTING AGENT
SODIUM LAURYL SULFATE
in capsules, it is preferably used to ensure homogenous mixture of actives and excipients
GEOMETRIC DILUTION
- powder is placed on a powder paper or ointment slab and smoothed with a spatula to a height approximately half the length of the capsule body
- the base of the capsule is held vertically and the open end is repeatedly pushed or punched into the powder until the capsule is filled; the cap is then replaced to close the capsule
PUNCH METHOD
On a small scale, capsules are cleaned individually or in small numbers by rubbing them on a
GAUSE OR CLOTH
On a large scale, many capsule-filling machines have a ____ that removes any extraneous material as the capsules leave the machine
CLEANING VACUUM
Capsules should be visually inspected and checked for:
UNIFORMITY
EXTENT OF FILL
LOCKED
Hard capsules contain ____ water
12 - 16 %
soft gelatin capsules are also called as
SOFT ELASTIC CAPSILE (SEC)
- soft, globular, thicker
- more moisture
- pharmaceutically elegant
- prepared by plate process, rotating die process, reciprocating die process
SOFT GELATIN CAPSULES
COMPONENTS OF SOFT GEL CAPS
GELATIN
in %
35 - 45%
COMPONENTS OF SOFT GEL CAPS
PLASTICIZER
in %
15 - 25 %
common plasticizer used in soft gel caps
GLYCERIN
SORBITOL
COMPONENTS OF SOFT GEL CAPS
WATER
in %
40%
SYNONYM
ACETAMINOPHEN CAPSULE
PARACETAMOL CAPSULE
USE/S
ACETAMINOPHEN CAPSULE
ANALGESIC
ANTIPYRETIC
METHOD OF PREPARATION
ACETAMINOPHEN CAPSULE
PUNCH METHOD
APPROPRIATE CONTAINER
ACETAMINOPHEN CAPSULE
RESEALABLE PLASTIC
ACETAMINOPHEN CAPSULE
API
ACETAMINOPHEN
ACETAMINOPHEN CAPSULE
DILUENT
STARCH
TABLET
Kaolin
Lactose
Mannitol
Starch
Calcium phosphate
Ppt calcium carbonate
DILUENT OR FILLER
TABLET
Carboxymethylcellulose
Natural gums
Alginic acid
Gelatin
Pre gelatinized starch
Liquid glucose
Ethycellulose
BINDERS OR ADHESIVES
TABLET
Clays
Starch
Alginic acid
Polacrillin potassium (amberlite)
Sodium alginate
Sodium starch glycolate
DISINTEGRANT
TABLET
Magnesium stearate
ANTIADHERENT
TABLET
Cornstarch,
Talc
Colloidal silica
GLIDANTS
TABLET
Calcium stearate
Magnesium stearate
Mineral oil
Stearic acid
Zinc stearate
LUBRICANT
TABLET
anise oil,
cinnamon,
cocoa,
menthol,
orange oil,
peppermint oil,
vanilla
FLAVORANTS
refers to tablets having pieces broken out or chipped, usually around the edges
CHIPPING
Cracked in the center
CRACKING
occurs when the upper segment of the tablet separates from the main portion of the tablet and comes off as a cap
CAPPING
is due to the same causes as capping except that the tablet splits and comes apart at the sides and is ejected in two parts
LAMINATION
preferred base for tablet triturates
LACTOSE
a base for tablet triturates that adds a pleasant, cooling sensation and additional sweetness in the mouth
MANNITOL
% of lactose in tablet triturates that makes the tablet firmer
20%
Drugs that react chemically with sugars require special bases such as
ppt calcium carb
ppt calcium phos
kaolin
bentonite
SYNONYMS
TABLET TRITURATES
MOLDED TABLETS
TABELLA TRITURATE
TABLET TRITURATII
USE/S
TABLET TRITURATES
DILUENT
SWEETENER
METHOD OF PREPARATION
TABLET TRITURATES
MACHINE MOLDING
APPROPRIATE CONTAINER
TABLET TRITURATES
WIDE MOUTH
TABLET TRITURATES
API (DILUENT)
LACTOSE
TABLET TRITURATES
MOISTENING AGENT
95% ALCOHOL
TABLET TRITURATES
CO SOLVENT MIXTURE AS MOISTENING AGENT
WATER
an API used as laxative; for constipation
LACTULOSE
TYPES OF PILLS
COMPRESSED
DISPENSING
- formerly the most extensively used oral dosage form
- easy to make and compact in quantity
- masked bitter or unpleasant tastes and odors
- stable for long periods and can be administered in this form if the dose is not too large
PILLS
A generic pill excipient contain
GLUCOSE
GLYCERN
POWDERED ACACIA
BENZOIC ACID
used as a preservative and might be omitted if only a small batch of pill mass was being compounded.
BENZOIC ACID
20mg and less potent substance with coloring agents
PARVULES
20 mg to 60mg it contains sugar
GRANULES
60mg to 500mg comes in variety of sizes, shapes, coating and color
PILLS
700mg to 2000mg for veterinary use
BOLUSES
SYNONYMS
MAGNESIUM SULFATE PILLS
SULFURIC ACID MAGNESIUM SALT
BITTER SALTS
EPSOM SALT
USE/S
MAGNESIUM SULFATE PILLS
SALINE LAXATIVE
METHOD OF PREPARATION
MAGNESIUM SULFATE PILLS
HAND MOLDING
APPROPRIATE CONTAINER
MAGNESIUM SULFATE PILLS
WIDE MOUTH
MAGNESIUM SULFATE PILLS
API
MAGNESIUM SULFATE
MAGNESIUM SULFATE PILLS
DILUENT
HARD SOAP
MAGNESIUM SULFATE PILLS
MOISTENING AGENT
PURIFIED WATER
SUPPOSITORIES
method od preparation for glycerin base
FUSION
SYNONYMS
GLYCERIN SUPPOSITORIES
GLYCEROL SUPPOSITORIES
LATIN NAME
GLYCERIN SUPPOSITORIES
SUPPOSITORIA GLYCERINI
USE/S
GLYCERIN SUPPOSITORIES
LAXATIVE
METHOD OF PREPARATION
GLYCERIN SUPPOSITORIES
MELT MOLDING
GLYCERIN SUPPOSITORIES
API
GLYCERIN
GLYCERIN SUPPOSITORIES
STIFFENING AGENT
SODIUM CARBONATE
STEARIC ACID
GLYCERIN SUPPOSITORIES
SOLVENT
DISTILLED WATER