Pharmacology
January 6, 2011
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Dr John Campbell Episodes Around January 6, 2011
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30:01Now PlayingPharmacology
YouTube Description
as posted by the channelOral medications
Advantages
Easy to administer
Convenient
Economical
Safe (overdose usually treatable
Self-administration
Painless
Controlled release possible
Most easily absorbed
Disadvantages
Can cause nausea/vomiting
Drugs may be unstable in GI, destroyed by enzymes e.g insulin
Erratic absorption for poorly soluble drugs
Food can affect absorption
Patient needs to be co-operative
Drugs subject to first-pass liver metabolism
Slow onset of action
Insufficient blood levels may be obtained
Some are irritant on GI lining e.g. aspirin
Problem of absorption in 'shock'
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