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

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

Careful with attribution. You changed the timing, the dose and the season. That is three variables.

Sorry for the basic question, but how do you actually start one of these diaries?

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

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

Do you contact the customs office or the carrier first?