The average Proxim drug store is 4,000 square feet (370 m2), similar to the typical size of a Brunet or Unipharm location.

There are close to 270 drug stores in Eastern Canada that carry the Proxim name.

The three pharmacy chains affected by this merger - Essaim, Obonsoins and Santé Services—were initially kept separate and intact by PharmEssor.

[2] In September 2017, McKesson Canada completed its acquisition of Uniprix which would be headed by the same president who oversees the Proxim chain.

[3] Proxim and Uniprix have since remained separate chains of McKesson, much the same way that competitors Jean Coutu and Brunet both live on within the ownership of Metro Inc.[4]