swims found a UK OTC source for piperonal , swim will make a purchase and see if he can seperate it from the other stuff in product...
its only around 2-3% piperonal from what i can gather
shouldn't be to hard... thou g cost would be around 2.5UKP per g to purchase.
EDIT : correct ml to gram...oops just the bottle was 100ml and read 2-3% and put ml in i know piperonal is a solid.silly me.