Drug Interactions between Biltricide and doxycycline

Food can enhance the levels of praziquantel in your body. To ensure maximal oral absorption, praziquantel should be administered with or immediately after a meal. This will make it easier for your body to absorb the medication. If you are receiving therapy with praziquantel you should avoid grapefruits and grapefruit juice. Grapefruit can raise the levels of praziquantel in your body and increase side effects of dizziness, abdominal discomfort, and nausea.. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor.

Consumer information for this interaction is not currently available.

GENERALLY AVOID: The oral bioavailability of quinolone and tetracycline antibiotics may be reduced by concurrent administration of preparations containing polyvalent cations such as aluminum, calcium, iron, magnesium, and zinc. Therapeutic failure may result. The proposed mechanism is chelation of quinolone and tetracycline antibiotics by di- and trivalent cations, forming an insoluble complex that is poorly absorbed from the gastrointestinal tract. Reduced gastrointestinal absorption of the cations should also be considered.

MANAGEMENT: Concomitant administration of oral quinolone and tetracycline antibiotics with preparations containing aluminum, calcium, iron, magnesium, and/or zinc salts should generally be avoided. Otherwise, the times of administration should be staggered by as much as possible to minimize the potential for interaction. Quinolones should typically be dosed either 2 to 4 hours before or 4 to 6 hours after polyvalent cation preparations, depending on the quinolone and formulation. Likewise, tetracyclines and polyvalent cation preparations should typically be administered 2 to 4 hours apart. The prescribing information for the antibiotic should be consulted for more specific dosing recommendations.

Information for this minor interaction is available on the professional version.