P slin`s active ingredient is a Lagerstroemia Speciosa extract which contains Corosolic acid. And this acid`s action is to stimulate glucose transport into cells, is effect is simular to that of insuline.
Is safer than insulin, but not as effective. The product is over priced.
You will have the same effect by making a tee from the leaves.
Go to a Indian market and purchase the tee or leaves and make a tee, and drink it after eat your carbs.