<p>A time-interval of 2 hours should be considered between this drug intake and the administration of other medicinal products, especially Tetracyclines, Digoxine, Fluoroquinolone, Iron salt, Ketoconazole, Neuroleptics, Thyroid Hormones, Penicillamine, beta-blockers (Atenolol, Metoprolol, Propranolol), Glucocorticoid, Chloroquine and Biphosphonates (diphosphonates) and Estramustine.</p>