Dissolution can best be described as a tool that can provide valuable
information about the bioavailability of a drug product. But to obtain
a good overall correlation with in vivo data, the presence of sink co
nditions is an essential requirement in the dissolution tests. The flo
w-through cell method has been recommended to be a dissolution method
that most satisfactorily fulfils this requirement for poorly water sol
uble drugs. The present article demonstrates that in case of artemisin
in, a hydrophobic compound used in high dose per tablet or capsule, ev
en the flow-through cell method does not guarantee the presence of sin
k conditions during the total duration of the experiments.