Drug Interaction Report

Talk to your doctor before using cladribine together with acyclovir. Some investigators have suggested that medications like acyclovir may reduce the effectiveness of cladribine, although this has not been studied extensively. 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.

Cladribine oral products can bind to other medications. This may increase your risk of experiencing side effects. To avoid or minimize the interaction, cladribine should be taken at least 3 hours before or after other medications. 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.