Antique medicine powders glass bottle

Antique sky blue medicine bottle, 1900-1910 London. KUTNOW'S POWDERS in raised letters on one side and K's.P. on the bottom. Large neck and hand tooled top. These powders were supposed to reconstitute the water of a famous hot spring pool thought to have restored a wounded king with its curative power. Just add the powder to water and ingest or bathe in it for relief from a long list of maladies. Interesting rabbit hole.