Test one thing at a time. It feels slower and it is the only way to learn anything.

File early. The window is shorter than people think and it starts at the transaction. Currently on a scanned-as-delivered parcel myself.

Stupid question: how do you know whether what is in the vial matches the label at all? Not on phenylpiracetam but the pattern is familiar.

It gets smaller. Not easy, smaller. That distinction kept me going. Tolerance was my main issue with a price change too.