Drug Interaction Report

Nonsteroidal anti-inflammatory drugs such as diclofenac topical may significantly increase the blood levels of lithium in some patients and cause lithium intoxication, which is potentially life-threatening and may require hospitalization. You may be particularly susceptible if you are elderly or have other risk factors such as kidney impairment, congestive heart failure, sodium restriction, and dehydration. Talk to your doctor if you have any questions or concerns. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. You should seek medical attention if you experience drowsiness, dizziness, confusion, diarrhea, vomiting, muscle weakness, muscle incoordination, tremor, blurred vision, ringing in the ear, excessive thirst, and/or increased urination, as these may be signs and symptoms of lithium intoxication. 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.

Alcohol can increase the nervous system side effects of lithium such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with lithium. Do not use more than the recommended dose of lithium, and avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. Talk to your doctor or pharmacist if you have any questions or concerns.

Using caffeine together with lithium may increase the effects of caffeine. Contact your doctor if you experience nausea, vomiting, diarrhea, drowsiness, muscle weakness, tremor, lack of coordination, blurred vision, or ringing in your ears. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. 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.