The published rule and the enforcement pattern are different documents. Only one of them affects you. Six weeks in on Canada Post and it lines up.

Stupid question: how do you know whether what is in the vial matches the label at all? Jaw tension was my main issue with modafinil too.

Same shape here, different drug. The thing that helped was documenting the refusal rather than re-arguing it. They refer rather than write.

My rule, after years of this: if it cannot survive being written down with the numbers attached, it is marketing.

If it needs three other compounds to notice, you have not tested the first one.