Drug Interaction Report

Some of the medication in roflumilast topical may be absorbed into the bloodstream following local application. It is possible that use of crizotinib may further increase blood levels of the medication by interfering with its clearance from your body. You may be more likely to experience side effects of roflumilast topical such as diarrhea, headache, insomnia, nausea, upper respiratory tract infection, or urinary tract infection. Let your doctor know if side effects become excessive or intolerable. 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.

Do not consume grapefruit or grapefruit juice during treatment with crizotinib unless directed otherwise by your doctor. Grapefruit juice can increase the blood levels of crizotinib to dangerous levels and cause an irregular heart rhythm that may be serious. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or fast or pounding heartbeats during treatment with crizotinib. You may take crizotinib with or without food, but take it the same time each day. 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.