It really suck that you got seized by customs. Why don't use castor oil orally and topically? I hope we can see a improvement. A lot of people aren't regular on their regiment, but you are so... maybe we can see if oral n topical castor oil do something!
We need to find another way around... OP Can you obtain PGE2 in a different way? I'm sure they have a way legally to have PGE2 maybe extract it from somethings legal (I wish I could help you). We can't let die this experiment.