Cold storage, light protection, date on the vial. Boring, removes half the variables. Tolerance was my main issue with L-theanine too.

Fees like that are charged by the carrier, not the state, which is why they are hard to contest.

Reconstitution arithmetic is only half the problem. The other half is what was in the vial.

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