Interdose restlessness is distinct from the original symptom and worth naming separately. Three years in on a lunchbox and it lines up.

Cold storage, light protection, date on the vial. Boring, removes half the variables.

Ten percent cuts, of the current dose not the original. That is the arithmetic that keeps it survivable.

Loose evidence is not nothing, but a washout either side is the only reason to trust your own take. Not on nicotine but the pattern is familiar.

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

Enteric coatings should not be crushed. The pellets are the delivery mechanism.

Sterility is the part people wave through and it is the part that actually bites.