Many iron supplements can turn your stools black because of unabsorbed iron. Floradix ®, Iron and vitamin tablets with iron from ferrous gluconate which is a particularly absorbable form with folic acid with extracts from selected herbs and rosehip Floradix may also cause constipation, bloating and gas, as with most iron supplements 2 ⭐ ⭐ This is a verified and trusted source It is combined with iron-rich whole food and herbal extracts, as well as co-factors such as vitamins to further enhance its absorption. In addition, iron contributes to normal red blood cell (supported by vitamins B6 and B12) and haemoglobin formation. In addition, iron contributes to normal red blood cell (supported by vitamins B6 and B12) and haemoglobin formation. Floradix liquid iron provides iron gluconate, a highly soluble, iron compound that is easy on the digestive tract. This is not a side effect about which you should worry, as it is not a sign of damage to your body. Floradix contains organic iron (II) from ferrous gluconate, vitamins B2, B6, B12 and C which contribute to the reduction of tiredness and fatigue and to normal energy-yielding metabolism. Floradix contains organic iron (II) from ferrous gluconate, vitamins B1, B2, B6, B12 and C. Iron, vitamins B2, B6, B12 and C contribute to the reduction of tiredness and fatigue and to normal energy-yielding metabolism.