Organic acids, calcium, phosphorus, phytin, colestramine, antacids containing aluminum, magnesium, calcium impair iron absorption due to the formation of insoluble complexes. Carbamazepine, colestramine, sulfasalazine, trimethoprim, triamterene, phenytoin, phenobarbital, hormonal contraceptives, antagonists of folic acid reduce the absorption of iron. Preparations of pancreatic enzymes can reduce iron absorption.
With simultaneous application of the drug with phenobarbital, carbamazepine, sodium valproate, sulfasalazine, hormonal contraceptives, folic acid antagonists, trimethoprim, pyrimethamine, triamterene, absorption of folic acid decreases.
Iron salts disrupt absorption from the gastrointestinal tract of antibiotics of the tetracycline group.
Solid food, bread, raw cereals, dairy products, eggs reduce iron absorption when used during antibiotic treatment with tetracyclines and penicillamine, as complex compounds that reduce iron absorption and reduce antimicrobial activity of antibiotics are formed.
Acetylsalicylic acid, H antagonists2histamine receptors, colchicine, neomycin reduce the absorption of cyanocobalamin.
Glucocorticoids strengthen the stimulation of erythropoiesis.
Chloramphenicol (parenteral administration) reduces the effect of cyanocobalamin in anemia.