Combination calcium carbonate + calcium lactogluconate can reduce the absorption of estramustine, etidronate, and possibly other bisphosphonates, phenytoin, quinolones, oral tetracycline antibiotics, and fluoride preparations. The interval between the reception of a combination calcium carbonate + calcium lactogluconate and the above preparations should be at least 3 hours.
Simultaneous administration of vitamin D and its derivatives increases the absorption of calcium. When administered in high doses along with vitamin D and its derivatives, calcium can reduce the action of calcium channel blockers.
If the combination is applied simultaneously calcium carbonate + calcium lactogluconate and tetracycline drugs, absorption of the latter may be impaired. For this reason, tetracycline drugs should be taken at least 2 hours before or 4-6 hours after ingestion.
Thiazide diuretics reduce the excretion of calcium in the urine, so when they are used together with a combination of calcium carbonate + calcium lactogluconate Serum calcium should be monitored regularly, as there is a risk of developing hypercalcemia.
Systemic corticosteroids reduce absorption of calcium. If they are used simultaneously, an increase in the dose of the combination may be required calcium carbonate + calcium lactogluconate.
When administered in combination calcium carbonate + calcium lactogluconate together with cardiac glycosides, an increase in the toxicity of cardiac glycosides is possible. Patients taking cardiac glycosides should regularly take ECG and monitor the level of calcium in the blood serum.
With the simultaneous ingestion of bisphosphonate or sodium fluoride, these drugs should be taken at least 3 hours before taking medications containing a combination calcium carbonate + calcium lactogluconate, as absorption from the gastrointestinal tract bisphosphonate or sodium fluoride can decrease.
Absorption from the gastrointestinal tract may decrease with the simultaneous intake of certain foods containing oxalic acid (for example, spinach, rhubarb) or phytic acid (in all cereals), in connection with the formation of insoluble complexes with calcium ions. Patients should not take drugs containing calcium carbonate + calcium lactogluconate 2 hours before or after a meal rich in oxalic or phytic acid.