Biltricide Drug Interactions

Tell the doctor or pharmacist if taking/using, have recently taken/used or might take/use any other medicines.
The effect of Biltricide is influenced in the following ways by simultaneous treatment with the medicines listed as follows: Diminished effect: The simultaneous administration of medicines that increase the breakdown of medicines in the liver by cytochrome P450 enzymes, such as rifampicin (an active substance for tuberculosis), antiepileptics (medicines for treating seizures, such as carbamazepine, phenytoin, phenobarbital, primidone), can decrease the concentration of Biltricide in the blood and consequently diminish the effect of Biltricide.
The simultaneous intake of dexamethasone (an active substance for treating inflammation), which increases the breakdown of medicines in the liver by cytochrome P450 enzymes, can decrease the concentration of Biltricide in the blood and consequently diminish the effect of Biltricide.
Dexamethasone should be stopped at least one week prior to taking Biltricide.
Increased effect and possible increase in side effects: The simultaneous administration of medicines that reduce the breakdown of medicines in the liver by cytochrome P450 enzymes, such as cimetidine (an active substance for treating gastrointestinal ulcers), can increase (lead to higher plasma concentrations) and prolong the effect (exposure time) of Biltricide.