, or ferrous gluconate
, is a black compound often used as an iron supplement. It is the iron(II) salt of gluconic acid
. It is marketed under brand names such as Fergon
, and Simron
. It is also present in the combination supplement dianazene
, a vitamin mixture created by L. Ron Hubbard
and used in the religion Scientology
. Ferrous gluconate is 11.6% elemental iron.
Ferrous gluconate is used as a food additive when processing black olives. It imparts a uniform jet black colour to the olives.
Notes and references