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Ceutics Exam 3, Part 4
Suppositories and Otic
28
Pharmacology
Professional
03/26/2012

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Cards

Term
Define suppositories
Definition
Solid dosage forms intended for insertion into body orifices where they melt to exert local or systemic effects of the drug
Term
Where are suppositories usually used?
Definition
Rectally and vaginally, and occasionally through urethra
Term
Describe the size and shape of rectal suppositories
Definition
These suppositories are about 1.5 inches long, are cylindrical, and have a tapered end. They weigh about 2 g.

Infant suppositories are 1/2 size
Term
List some systemic uses of rectal suppositories
Definition
sedatives,
tranquilizers,
analgesics
Term
What is the most common use for rectal suppositories?
Definition
To manage hemorrhoids
Term
Describe the size and shape of vaginal suppositories
Definition
Globular or oviform and weigh about 5 g
Term
What is the main difference between using a vaginal or rectal suppositories?
Definition
A vaginal suppository may need an applicator
Term
What are vaginal suppositories usually used for?
Definition
To treat infections locally, or for contraception
Term
What is another term for vaginal suppository?
Definition
Pessary
Term
Define vaginal insert
Definition
Vaginal tablets prepared by a compression method, inserted with a plastic inserter to disintegrate
Term
What is another name for a urethral suppository?
Definition
Bougies
Term
Describe the size and shape of urethral suppositories
Definition
cylindrical in shape and slender (5 mm in diameter)
Term
List two applications for a urethral suppository
Definition
Local infections, erectile dysfunction
Term
Define cocoa butter
Definition
Throbroma oil that is polymorphic and melts at body temperature
Term
What are the two forms of cocoa butter/theobroma oil?
Definition
Alpha form- metastable, created if ever heated over 60C, much lower melting point

Beta form- stable form
Term
Define water soluble suppository base
Definition
polyethylene glycols (PEGs) or glycerinated gelatin

Do not melt, but rather dissolve- so less messy

Slower, allows absorption
Term
Define hydrogel
Definition
Macromolecular networks that swell but do not dissolve in water

Drug is in matrix, when gel swells in body drug is released
Term
Describe suppository hand rolling
Definition
Base and drug are kneaded into a mass in mortal & pestle.

The mass is transferred to a sheet of paper and then rolled by hands to form a cylinder, which is then cut.
Term
Describe suppository compression
Definition
The drug mass is forced into a mold under pressure using a press
Term
Describe suppository fusion
Definition
The drug is dispersed in melted suppository base. The mixture is then poured into a suppository mold and cooled.

Only can be used for heat-stable drugs!
Term
Describe suppository packaging
Definition
Must be upright

Any melting/cocoa butter ones should be refrigerated
Term
Define otic drug form
Definition
Dosage forms designed for application in the ear
Term
List some applications for otic drug delivery
Definition
Treatment of ear infections, inflammation, pain, or for the removal of excessive cerumen (earwax)
Term
Define external ear

(list two other terms for it)
Definition
Pinna, or auticle

Outside fleshy portion, ear canal, and surface of eardrum
Term
Define middle ear
Definition
The three bones holding the eardrum (not important for pharmacy)
Term
Define inner ear
Definition
The cochlea, semicircular canals, vestibular nerve, eustachian tube
Term
Define cerumen
Definition
Earwax; a combination of the secretions of the sweat and sebaceous glands of the external auditory canal and which forms a sticky semisolid when dry
Term
List some solutions used to remove earwax
Definition
Light mineral oil, vegetable oil, and hydrogen peroxide have been used to soften impacted cerumen
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