Overview About Injections
The term injection includes administration of
intravenous (IV), intramuscular (IM), and subcutaneous (SC) areas.
The benefit of injections as a drug delivery form is that they act swiftly.
The onset of action for IV is 1530 seconds, IM is 1020 minutes
and SC is 1530 minutes. Injections are also essentially bioavailable.
They are helpful for drugs that are inefficient in their absorbtion or
worse, do not show any result through oral administration.
Certain drugs, especially antipsychotics, are best delivered through
long-acting IM injections. In process IV injectables can be helpful for
delivery of regular drugs, even in the form of liquids. In some cases,
patients are trained to use the injectables themselves. Injections required
in SC areas to give insulin is patient-friendly. They can be managed without
the involvement of highly trained profesionals.