Re: [e-drug] Differences in shelve lives of same medicine (5)

["KAZEEM BABATUNDE" <yusuffkby@yahoo.co.uk>]

E-DRUG:  Differences in shelve lives of same medicine (5)
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Hello E-Druggers,

This issue has been adequately dealt with by comments
from respected e-druggers. But I want to just add that
we should be clear exactly about what we are dealing
with. 

Is it Half life or shelf life? 

A Drug ESSENTIALLY do not have different half lives but a
single drug can different shelf lives depending on
formulation factors and storage factors. Furthermore,
formulation factors and drug designing strategies
(which manipulate drug structures)can be used to slow
down or delay release of a drug or improve its tissue
penetration and persistence.

But essentially formulation factors will account for
two different formulations containing the same active
ingredient to have different shelf lives.

Kazeem Babatunde Yusuff
Dept. of Clinical Pharmacy
Faculty of Pharmacy
University of Ibadan
Nigeria
yusuffkby@yahoo.co.uk