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:
Quinidine or thioridazine may slow down how quickly your body processes medicines in the tricyclic antidepressant family: amitriptyline, clomipramine, desipramine, doxepin, imipramine or nortriptyline.
What might happen:
The blood levels of your tricyclic medicine may increase and could cause side effects.
What you should do about this interaction:
Make sure your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together. If you experience weakness, tiredness, dizziness, light headedness, irregular heartbeat, confusion, nervousness, difficulty sleeping, blurred vision, severe constipation, or problems urinating, contact your doctor as soon as possible. It may be necessary to adjust the dose or change one of your medicines.Your healthcare professionals may already be aware of this 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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