Correct spelling for the English word "colanin" is [kˈɒlɐnˌɪn], [kˈɒlɐnˌɪn], [k_ˈɒ_l_ɐ_n_ˌɪ_n] (IPA phonetic alphabet).
A yellowish powder composed of a mixture of bile acids with magnesium carbonate; recommended in the treatment of cholelithiasis in doses of gr. 1/4-1/2 (0.015-0.03).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.