Interesting name history:

The name Calpis was constructed as a portmanteau, by combining cal from calcium and pis from Sanskrit sarpiṣ (/s̪əɽpiʂ/), meaning butter[3]. Primarily in North America, the name Calpis is changed to Calpico with カルピス in katakana either below or on the reverse side of the packaging.

“Pour a Glass of Calcium Butter”

Also a sensible regional renaming. ;)

/