Paracetamol reduces the effectiveness of uricosuric agents.
Simultaneous use of paracetamol in high doses increases the effect of anticoagulants (a decrease in the synthesis of procoagulant factors in the liver).
Inductors of microsomal enzymes of the liver, ethanol and hepatotoxic agents increase production: hydroxylated. metabolites of paracetamol, which allows the development of severe intoxication, even with a small overdose.
Long-term use of barbiturates reduces the effectiveness of paracetamol.
When used simultaneously with ethanol, it will break down. risk of acute pancreatitis.
Myelotoxic agents increase the manifestation of hematotoxicity of paracetamol.
Caffeine is an adenosine antagonist (large doses of adenosine may be required).
With simultaneous application; caffeine and inductors of microsomal liver enzymes may enhance metabolism and increase caffeine clearance; inhibitors, microsomal enzymes of the liver - a decrease in the metabolism of caffeine in the liver.
Mexiletine reduces caffeine withdrawal to 50 %; nicotine increases speed excretion of caffeine.
Monoamine oxidase inhibitors; furazolidone, procarbazine and soylegiline - large doses of caffeine can cause the development of dangerous cardiac arrhythmias or severe, high blood pressure.
Caffeine reduces absorption of drugs calcium from the gastrointestinal tract; reduces the effect of narcotic and hypnotics; increases the excretion of lithium drugs with urine; accelerates absorption and enhances the action of cardiac glycosides, increases their toxicity.
The simultaneous use of caffeine with p- adrenoblockers can lead to mutual suppression of therapeutic effects; with P-adrenomimetics - to additional stimulation of central CNS and other additive toxic effects.
Caffeine can reduce the clearance of theophylline and, possibly, other xanthines, increasing the possibility of additive pharmacodynamic and toxic effects.
Propifenazone-can increase the effect of oral hypoglycemic agents sulfanilamide preparations anticoagulants ulcerogenic effect of glucocorticosteroids, reduces the effectiveness of potassium-sparing diuretics.
Absorption of the components of the drug may decrease with simultaneous application with colestyramine; m-holinoblokatorami, antidepressants.