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Welcome to the short lecture on
drug formulations.
I'm Karel Allegaert.
I'm a clinical
pharmacologist working at
KU Leuven; and happy to
introduce you to this topic.
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Why would we bother
about this topic?
It's because different
formulations will result in
different exposure
time profiles and
related to that, potential
effects or side effects.
For specific details on that,
I refer to the short lecture
on pharmacokinetics.
If you compare IV formulations,
or intravenous formulations,
to oral formulations
or to other routes,
it's quite obvious
that related to
absorption, the pattern of
a concentration over
time will change.
But even within an
oral formulation,
you could compare a
slow release versus
a general or a common
standard formulation.
Formulations contain
also other compounds
besides what we consider the
drug (active compounds).
This may have to do
with excipients,
may have to do with
taste masking,
or may have to do
with preservatives.
Excipients are commonly
used to improve
the solubility of a formulation,
taste masking is all
about palatability,
and preservatives,
obviously, will
improve the shelf
life of a given drug.
Selection of a formulation
should, obviously,
be based on patient
preferences and needs.
It may have to do with age or
with disease-related
characteristics.
For instance, swallowing issues.
Then finally, I would like to
highlight extemporaneous
formulations,
as this is still commonly
used for specific needs.
