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Drug Interactions between Concerta and phentolamine

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

phentolamine methylphenidate

Applies to: phentolamine and Concerta (methylphenidate)

Consumer information for this interaction is not currently available.

MONITOR: Methylphenidate and other derivative amphetamines may decrease the therapeutic effects of antihypertensive drugs. According to serdexmethylphenidate label information, CNS stimulants cause a mean increase in blood pressure of approximately 2 to 4 mmHg and a mean increase in heart rate of approximately 3 to 6 beats per minute. With some individuals having larger increases.

MANAGEMENT: Caution and monitoring of blood pressure is recommended if methylphenidate, dexmethylphenidate or serdexmethylphenidate are administered with antihypertensives agents such as: potassium-sparing and thiazide diuretics, calcium channel blockers, angiotensin-converting-enzyme (ACE) inhibitors, angiotensin II receptor blockers (ARBs), beta blockers or centrally acting alpha-2 receptor agonists. The dosage of the antihypertensive drug should be adjusted as needed.

References

  1. "Product Information. Ritalin (methylphenidate)." Novartis Pharmaceuticals PROD (2001):
  2. "Product Information. Metadate CD (methylphenidate)." Celltech Pharmaceuticals Inc (2022):
  3. "Product Information. Focalin (dexmethylphenidate)." Mikart Inc (2001):
  4. "Product Information. Metadate ER (methylphenidate)." Celltech Pharmaceuticals Inc (2002):
  5. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  6. Cerner Multum, Inc. "Australian Product Information." O 0
  7. "Product Information. Ritalin LA (methylphenidate)." Quality Care Products/Lake Erie Medical (2013):
  8. "Product Information. Azstarys (dexmethylphenidate-serdexmethylphenidate)." Corium, Inc. (2021):
View all 8 references

Drug and food interactions

Moderate

methylphenidate food

Applies to: Concerta (methylphenidate)

Do not use alcohol or medications that contain alcohol while you are receiving treatment with methylphenidate. This may increase nervous system side effects such as drowsiness, anxiety, depression, and seizures. In addition, with certain long-acting forms of methylphenidate, alcohol can cause too much of the drug to be released at one time. High blood levels of the drug may increase the risk of side effects. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. 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.

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Moderate

phentolamine food

Applies to: phentolamine

Phentolamine and ethanol may have additive effects in lowering your blood pressure. You may experience headache, dizziness, lightheadedness, fainting, and/or changes in pulse or heart rate. These side effects are most likely to be seen at the beginning of treatment, following a dose increase, or when treatment is restarted after an interruption. Let your doctor know if you develop these symptoms and they do not go away after a few days or they become troublesome. 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. 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.

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Therapeutic duplication warnings

No 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.

See also

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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.

Further information

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

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