Exam 2 - Powerpoint 6 (Liquid Dosage) Flashcards
Routes of Admin
Oral, Otic, Ophthalmic, Topical
Syrup
aqueous solution containing sugar
Elixers
combination of water and ethanol
Spirit
Solutions of aromatic materials with alcohol
Tinctures or fluid extracts
Solutions extract active constituents from crude drugs
Solubility Factors
Solvent used Pressure pH of the solution Physical agitation applied to the solution Particle size
Solubility
Solubility of agent in particular solvent indicates max conc (saturation)
Temp can increase or decrease solubility
Positive heat of solution
chemical absorb heat when dissolved, increasing solubility
Negative heat of solution
solubility decreases as temp increases
Solvents
Water
Alcohol
Water + Alc = hydroalcoholic mixture
Glycerin and glycols are used with alcohol to reduce the amount of alcohol needed to solubilize drugs
FDA limits alcohol in children’s 6-12yr old product to 0.5%, 12+ = 5% and adults 10%
Diluted alcohol
50/50 mixture of Alcohol, USP and Purified Water, USP
Rubbing Alcohol
70% ethyl alcohol, with water, denaturants, perfume oils and stabilizers.
Each 100ml must contain 355mg sucrose octoacetate or 1.4 denatonium benzoate to discourage oral ingestion
Glycerin (Glycerol)
Clear syrupy liquid with alcohol solvent properties
Isopropyl Rubbing Alcohol
70% isopropyl alcohol used as soothing rub
91% used as sterilizing agent
Propylene Glycol
Solvent miscible with water and alcohol