Drug Interaction Report

Before taking acyclovir, tell your doctor if you also use lithium. You may need dose adjustments or special tests in order to safely take both medications together. This combination may alter your lithium levels. You should notify your doctor if you have symptoms such as diarrhea, vomiting, drowsiness, tremor, thirst, lack of coordination, or muscle weakness. It is important that you tell your healthcare provider about all other medications that you are using including vitamins and herbs. Do not stop using your 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.