Citrate is a derivate of citric acid, which is generated during the tricarboxylic acid cycle (Krebs cycle). It is used by all aerobic organisms to produce energy in form of adenosine 5´-triphosphate (ATP). It occurs naturally in high concentrations in fruits and vegetables and is involved in the maintenance of the acid-base balance and bone health (Granchi et al., 2019). Citrate increases iron absorption because it acts as a weak chelator and keeps iron in the duodenum soluble (Abbaspour et al., 2014).