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Date May 2012 Marks available 2 Reference code 12M.3.sl.TZ1.D1
Level SL Paper 3 Time zone TZ1
Command term State Question number D1 Adapted from N/A

Question

Drugs are most commonly taken orally.

Drugs are most commonly taken orally.

(a) State one advantage and one disadvantage of this.

Advantage:

Disadvantage:

[2]
a.

List three methods, other than orally, that can be used for the administration of a drug.

[2]
b.

Markscheme

Advantage:

easily taken/convenient / no specialist equipment needed;

Disadvantage:

stomach acid reacts with drugs / slow effect / only small fraction of drug absorbed / vomiting / requires conscious patient / harm digestive system/can cause stomach bleeding;

a.

inhalation

parenteral / by injection / intravenous / intramuscular / subcutaneous

rectal

skin patches

eye/ear/nose drops

topical

Award [2] for all 3 correct, [1] for 2 correct, [0] for 1 correct.

b.

Examiners report

In general, this question was well answered.

a.

In general, this question was well answered.

b.

Syllabus sections

Options » D: Medicinal chemistry » D.1 Pharmaceutical products and drug action
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