Disclosed are processes for preparing cocrystals, including processes for scaling up of cocrystal formation, as well as scalable processes for preparing cocrystals. Also disclosed are processes for scaled-up preparation of pterostilbene, progesterone, p-coumaric, and minoxidil cocrystals. Minoxidil cocrystals, such as minoxidil:benzoic acid 1:1 monohydrate cocrystals are also disclosed herein.