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Drug Interaction Report

9 potential interactions and/or warnings found for the following 4 drugs:

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Interactions between your drugs

Major

nortriptyline PARoxetine

Applies to: nortriptyline, Paxil (paroxetine)

Talk to your doctor before using nortriptyline and PARoxetine. This combination may cause sedation, dry mouth, blurred vision, constipation, or urinary retention. You might also have altered consciousness, confusion, poor muscle coordination, abdominal cramping, shivering, pupil dilation, sweating, high blood pressure, and high heart rate. If you take both medications together, tell your doctor if you have any of these symptoms. You may need a dose adjustment or special test if you take 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.

Major

nortriptyline topiramate

Applies to: nortriptyline, Topamax (topiramate)

Topiramate can cause increased body temperature and decreased sweating, and these effects may be worsened when combined with medications like nortriptyline. Heat stroke and hospitalization may occur in some people, especially in warm weather and during vigorous exercise. Children are particularly susceptible. 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 by your doctor to safely use both medications. You should drink plenty of fluids during warm weather and when exercising, and seek medical attention if you have decreased sweating or a fever. You may also experience drowsiness, dizziness, or lightheadedness when taking these medications together. Therefore, avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medications affect you. 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.

Moderate

verapamil nortriptyline

Applies to: verapamil, nortriptyline

Before taking verapamil, tell your doctor if you also use nortriptyline. You may need dose adjustments or special tests in order to safely take both medications together. This combination may increase the effects of nortriptyline. You should notify your doctor if you have symptoms of dry mouth, blurry vision, irregular or fast heartbeat, constipation, urine retention, dizziness, or a drop in blood pressure that is brought on by changes in body position. 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.

Moderate

PARoxetine topiramate

Applies to: Paxil (paroxetine), Topamax (topiramate)

Treatment with PARoxetine may occasionally cause blood sodium levels to get too low, a condition known as hyponatremia, and using it with some anticonvulsants can increase that risk. In addition, PARoxetine can cause seizures in susceptible patients, which may reduce the effectiveness of medications that are used to control seizures such as topiramate. 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 nausea, vomiting, headache, lethargy, irritability, difficulty concentrating, memory impairment, confusion, muscle spasm, weakness or unsteadiness, as these may be symptoms of hyponatremia. More severe cases may lead to hallucination, fainting, seizure, coma, and even death. Also let your doctor know if you develop seizures or experience an increase in seizures during treatment with PARoxetine. Additionally, because these medications may cause dizziness, drowsiness, and impairment in judgment, reaction speed and motor coordination, you should avoid driving or operating hazardous machinery until you know how they affect you. 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.

No other interactions were found between your selected drugs. However, this does not necessarily mean no other interactions exist. Always consult your healthcare provider.

Drug and food/lifestyle interactions

Moderate

verapamil food/lifestyle

Applies to: verapamil

You may take verapamil with or without food, but take it the same way every time. You should avoid consuming grapefruit or grapefruit juice as much as possible during treatment with verapamil. If you have been regularly consuming grapefruit or grapefruit juice with verapamil, do not increase or decrease the amounts of these products in your diet without first talking to your doctor. Grapefruit juice can increase the blood levels and effects of verapamil. Contact your doctor if you experience sudden, unexplained weight gain; swelling of the hands, ankles, or feet; chest pain; or difficulty breathing. Avoid driving or operating hazardous machinery until you know how the medication affects you, and use caution when getting up from a sitting or lying position. 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.

Moderate

PARoxetine food/lifestyle

Applies to: Paxil (paroxetine)

Alcohol can increase the nervous system side effects of PARoxetine 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 PARoxetine. Do not use more than the recommended dose of PARoxetine, 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.

Moderate

verapamil food/lifestyle

Applies to: verapamil

Ask your doctor before using verapamil together with ethanol (alcohol). Verapamil may increase the blood levels and intoxicating effects of ethanol (alcohol). This can cause symptoms of extreme drowsiness, confusion, and nausea. If you experience any of these side effect you should avoid activities requiring mental alertness. 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.

Moderate

nortriptyline food/lifestyle

Applies to: nortriptyline

Ask your doctor before using nortriptyline together with ethanol (alcohol), this can alter the effects of nortriptyline and cause increased side effects. Call the doctor if you experience uneven heartbeats, extreme drowsiness, confusion, agitation, vomiting, blurred vision, sweating, muscle stiffness, feeling light-headed, and seizures. You should be warned not to exceed recommended dosages, to avoid alcohol, and to avoid activities requiring mental alertness. If your doctor prescribes these medications together, you may need a dose adjustment to safely take this combination. 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.

Moderate

verapamil food/lifestyle

Applies to: verapamil

Using verapamil together with multivitamin with minerals can decrease the effects of verapamil. Talk with your doctor before using verapamil and multivitamin with minerals together. You may need a dose adjustment or need your blood pressure checked more often if you take 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.

Therapeutic duplication warnings

No duplication warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.


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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
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 interaction information available.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.