Suppositories

Pharmaceutics

31 cards   |   Total Attempts: 182
  

Cards In This Set

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What are suppositories?
Solid bodies of various weights and shapes adapted for insertion into rectal, vaginal or urethral orifices of the body.
What systemic effects can suppositories provide?
Antinauseant, antiasthmatic, analgesic, hormone.
Chloropromazine - tranquilizier
ergotamine tartarate - migraine tx
What are some local examples of suppositories?
Hydrocortisone - hemorrhoids
Glycerine - laxative
Which rectal veins go directly into the systemic blood flow?
Middle and inferior hemorrhoidal veins
How much do rectal suppositories weigh?
2g, and are 2-3cm in length. Infant suppositories should weigh half of adult.
How do vaginal suppositories get into systemic circulation?
Through the vaginal artery.
What is the shape of vaginal suppositories and their weight?
Ovoid or Globular., 3-5g each.
What type of base are vaginal suppositories compounded with?
Water soluble to minimize leakage.
What purposes do vaginal suppositories fill?
Contraception, estrogenic, combat invading pathogens, antifungal, antibacterial.
How long are urethral suppositories?
50mm female, 2g
125mm male, 4g
5mm diameter for both
What are desirable properties for suppository bases?
Stable under normal conditions
Compatible
No odor
Non Toxic
Non Irritating
Melt/dissolve inside body orifice
mix/absorb water
wetting/emulsifying properties
What are some oleaginous bases?
Theobroma oil (cocoa butter)
Synthetic triglyceride mixturesHow m
What is the main form of cocoa butter?
Beta
What are the major factors with cocoa butter?
Don't heat above 35 degrees
Melting point drops when adding certain drugs (chloral hydrate and phenol)
beeswax raises mp
Has no surfactant so can't emulsify water
Need water-soluble form of drug
What are synthetic tricglycerides made up of?
Hydrogenated Vegetable oils (palm, palm kernel, coconut oils)