Do you contact the customs office or the carrier first?

Worth repeating that this is not medical advice and the answer often depends on who you are.

Two accounts, one person, is the usual explanation when this comes up.

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

Pharmacist. Two minutes.

Personal experience, labelled as such, is exactly right here. Nobody is prescribing.

Name the active ingredient, not just the brand. It makes these threads searchable years later.

The hologram is the least useful check because it is the one everybody makes.

If you name a shop here, say whether you are affiliated. First line is enough.

This is the correct amount of effort for a thread like this.