Skip to Content
Could you or a loved one be experiencing depression?

Drug interactions between Parnate and Stelazine

Results for the following 2 drugs:
Parnate (tranylcypromine)
Stelazine (trifluoperazine)

Interactions between your drugs

Moderate

tranylcypromine ↔ trifluoperazine

Applies to:Parnate (tranylcypromine) and Stelazine (trifluoperazine)

Using trifluoperazine together with tranylcypromine can increase the side effects of both medications. You may be more likely to develop low blood pressure and related problems such as dizziness, lightheadedness, fainting, weakness, and a rapid pulse/heart rate. Nervous system side effects such as drowsiness, confusion, disorientation, memory loss, and seizures may also increase. Let your doctor know if you experience these symptoms and they do not go away after a few days or they become troublesome. These side effects can occur with either medication alone and are most often seen at the beginning of treatment, following a dose increase, or when treatment is restarted after an interruption. Alcohol may also increase these effects, so you should avoid the consumption of alcohol during treatment with these medications. You should seek immediate medical attention if you develop fever, muscle stiffness, confusion, sweating, fast or uneven heartbeats, restless muscle movements in your face or neck, tremor (uncontrolled shaking), or difficulty swallowing. Avoid driving or operating hazardous machinery until you know how the medications affect you, and use caution when getting up from a sitting or lying position. You may need a dose adjustment or more frequent monitoring by your doctor 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.

Switch to professional interaction data

Drug Interaction Classification

The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

Disclaimer: Every effort has been made to ensure that the information provided by Multum is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. Multum's information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill, knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective, or appropriate for any given patient. Multum Information Services, Inc. does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Copyright 2000-2017 Multum Information Services, Inc. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse, or pharmacist.

Hide