Don't you think this means they've got the formulation for the sachets completed? They're not saying "will be" (some time in the future, after design is completed) but "IS... conveniently packaged" (NOW).

"Brilacidin is easily administered as an oral rinse and conveniently packaged in sachet form, similar in design to a sugar packet. With a sachet, patients simply would mix the contents of the Brilacidin sachet with water for a quick-and-easy treatment at home or on-the-go.”

EDIT: well, this is ambiguous:
"with plans to package it in an easily transportable sachet form"