Sorry, probably obvious, but where do you even start with something blank?

Did not know half of this. Thanks.

Following this because I am in the same place and have no idea what to ask at the appointment. Not on the returns address but the pattern is familiar.

Stupid question: how do you know whether what is in the vial matches the label at all?

What do you do about the fee? Do you just pay it?

Is a baseline blood test really necessary before starting something like this?

How long before you can reasonably say something is or is not doing anything?

Do you contact the customs office or the carrier first?