Strengthens the effects of sedatives, ethanol.
Antidepressants, antiparkinsonics, antipsychotics, phenothiazine derivatives - increase the risk of urinary retention, dry mouth, constipation.
Glucocorticosteroids increase the risk of developing glaucoma.
Paracetamol reduces the effectiveness of uricosuric medicines.
Phenyramin simultaneously with MAO inhibitors, furazolidone can lead to hypertensive crisis, agitation, hyperpyrexia.
With the simultaneous administration of the drug with barbiturates, diphenin, carbamazepine, rifampicin and other inducers of microsomal oxidation (phenytoin, ethanol, phenylbutazone, tricyclic antidepressants) increases the production of hydroxylated active metabolites and increases the risk of hepatotoxic effects of paracetamol in small overdoses.
Inhibitors of microsomal oxidation (cimetidine) reduce the risk of hepatotoxic effects.