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| What are the differences
among of dosage forms? |
| There are various routes of administration for
drugs. Each route may have several different types
of formulation. Like oral route, it can be in the
form of tablets, capsules or liquid; while for parenteral
route, it can be in powder or intravenous fluid.
At present, most of the MSD drugs are in tablet
form, some are in eye drop form and some are in
injectable form. |
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| Tablet |
They are prepared by compression of medicaments
with a variety of excipients into solid dosage
form. It is the most convenient dosage form
and can be easily swallowed with water.
Eg. PROPECIA®, SINGULAIR®, ZOCOR®,
COZAAR®, HYZAAR®, FOSAMAX®
| Chewable
tablets: They
are designed for children and
those who have difficulty in swallowing
down tablets and usually have
a pleasant taste, eg. SINGULAIR®
chewable |
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| Sustained-release
tablets: They
are designed to release the drug
slowly after ingestion to prolong
the action of the drug in the
body, eg. SINEMET CR®
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| Capsules |
They are in the form of gelatin shell, usually
to mask the unpleasant taste of medicaments.
Eg. STOCRIN® |
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| Eye drops |
They are sterile solutions or suspensions
(free from germs and bacteria) for instillation
into eyes. Normally, there are preservatives
in eye drops. A bottle of eye drop can only
be last for one month after the cap is opened.
Eg. TIMOPTOL®, TIMPILO® |
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| Parenteral preparations |
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They can be packed as powders for injections
which are sterile solid to be reconstituted
with sterile fluid before injecting into
the body.
Eg. M-M-R®II
Or as intravenous infusions which are sterile
aqueous solution or emulsions.
Eg. TIENAM®
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