1857 - founded by Alfred Bishop (1821-1886) who prepared granular effervescent citrate of magnesia.

1886 - after death of Alfred Bishop senior business carried on by his sons Walter Beacall Bishop (1853-1925) and Alfred Bishop (junior),

1892 - became a limited company

Other known products: Varalettes, Calcusol, lithium acetyl-salicylate (Litmopyrine) and calcium acetyl-salicylate (Kalsetal).

Located at 48 Spelman Street, London, N1 and later at 74 Garden Walk, Cambridge, England.

Manufactories also in Barcelona, Spain, and Sydney, Australia