In clinical studies with EGb 761, both inhibition and induction of cytochrome P450 isoenzymes were detected.With the simultaneous administration of EGb 761 with midazolam, the level of the latter changed presumably because of the effect on CYP3A4. Therefore, caution should be exercised in the joint administration of EGb 761 and drugs metabolized by the CYP3A4 isoenzyme and having a low therapeutic index.
Do not apply the drug to patients who systematically use acetylsalicylic acid (as an antiplatelet agent), anticoagulants (direct and indirect action), and other drugs that reduce blood clotting.
With the simultaneous use of Tanakan in the form of a solution for oral administration with antibiotics, a group of cephalosporins (
cefamandol,
cefoperazone, latamoxef), gentamicin, chloramphenicol, disulfiram, thiazide diuretics, anticonvulsants, oral hypoglycemic agents (
chlorpropamide,
glibenclamide,
glipizide, tolbutamide,
metformin (possible development of lactic acidosis)), antifungal agents (
griseofulvin), derivatives of 5-nitroimidazole (
metronidazole,
ornidazole,
secnidazole,
tinidazole), ketoconazole, cytostatics (
procarbazine), tricyclic antidepressants, tranquilizers may cause such reactions as hyperthermia, skin flushing, vomiting, heart palpitations, since 1 dose of Tanakan in the form of oral solution contains 450 mg of ethyl alcohol.