Serious. These medicines may interact and cause very harmful effects. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
When these two medicines are taken together, your body may not process lithium properly. Your diuretic may interfere with the benefits of lithium.
What might happen:
The effects of lithium may decrease or increase causing either decreased effectiveness or an increase in toxic effects.
What you should do about this interaction:
If your doctor prescribes these medicines together, you may need to have your lithium blood levels checked closely. Contact your doctor as soon as possible if you experience changes in mood, diarrhea, vomiting, ringing in the ears, blurred vision, lack of coordination, unusual drowsiness, seizures, tremor, or loss of consciousness. It may be necessary to change the dose of your lithium or to change your diuretic.Your healthcare professionals (e.g. doctor or pharmacist) may already be aware of this drug interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
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