Drug Interaction Report

Lanthanum carbonate and doxycycline should not be taken orally at the same time. These medications may interfere with each other's absorption into the bloodstream, which may reduce the effects of both medications. To minimize the potential for interaction, avoid taking doxycycline within 2 hours of taking lanthanum carbonate. Talk to a healthcare professional if you have questions on how to take these or other medications you are prescribed. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Take lanthanum carbonate tablets with food or immediately after a meal to increase absorption by the body. Lanthanum carbonate tablets cannot be dissolved in water and therefore should not be given through feeding tubes because the tube may become clogged. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Iron can bind to doxycycline in the gastrointestinal tract, which may prevent their absorption into the bloodstream and possibly reduce their effectiveness. To avoid or minimize the interaction, iron-containing medications and doxycycline should preferably be taken at least three to four hours apart in most cases. Talk to your doctor if you have any questions or concerns, or if you have trouble separating the dosing times. Your doctor may be able to prescribe alternatives that do not interact. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

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