As an activator of microsomal oxidation, it can inhibit the therapeutic activity of drugs that undergo metabolism in the liver.
Increases the antidepressant effect of monoamine oxidase inhibitors, but increases the risk of developing hypertensive crises.
When combined with fluoxetine, paroxetine, sertraline, fluvoxamine, or citalopram, it increases the hemolytic reactions and the course of the "serotonin syndrome" (dizziness, nausea, vomiting, headache, epigastric pain, anxiety, confusion, confusion, anxiety and irritability).
The drug is able to enhance the photosensitizing effect of other drugs, in particular tetracyclines, sulfonamides, thiazide diuretics, quinolones, piroxicam.
Reduces the hypotensive effect of reserpine.
Reduces the concentration of cyclosporine in the blood.
St. John's wort reduces the concentration in the blood and the effectiveness of indinavir therapy.
With simultaneous use with ethinyl estradiol and desogestrel, the risk of bleeding increases.
Increases the metabolic rate of theophylline.
Reduces the concentration in the blood of digoxin, reduces its toxicity.