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Drug Interactions between Dristan Cold Non-Drowsy and methoxyflurane

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

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Interactions between your drugs

Moderate

methoxyflurane pseudoephedrine

Applies to: methoxyflurane and Dristan Cold Non-Drowsy (acetaminophen / pseudoephedrine)

Consumer information for this interaction is not currently available.

GENERALLY AVOID: The administration of volatile general anesthetics during therapy with indirect-acting sympathomimetics (e.g. methylphenidate, ephedrine) or their derivatives may increase the risk of hypertension and/or cardiac arrhythmias. The proposed mechanism is anesthetic-induced myocardial sensitization to the stimulation caused by sympathomimetics.

MANAGEMENT: Until more information is available, caution is advisable if volatile general anesthetics are administered concomitantly with indirect-acting sympathomimetics or any of their derivatives. If the combination is required, dosage adjustments are recommended, and the patient's hemodynamic status should be closely monitored. When surgery is planned, it is recommended that indirect-acting sympathomimetics or their derivatives be discontinued prior to the day of surgery. Prescribing information for individual products should be consulted.

Drug and food interactions

Major

acetaminophen food

Applies to: Dristan Cold Non-Drowsy (acetaminophen / pseudoephedrine)

Ask your doctor before using acetaminophen together with ethanol (alcohol). This can cause serious side effects that affect your liver. Call your doctor immediately if you experience a fever, chills, joint pain or swelling, excessive tiredness or weakness, unusual bleeding or bruising, skin rash or itching, loss of appetite, nausea, vomiting, or yellowing of the skin or the whites of your eyes. If your doctor does prescribe these medications together, you may need a dose adjustment or special tests to safely 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.

Moderate

methoxyflurane food

Applies to: methoxyflurane

Using methoxyflurane together with ethanol (alcohol) may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people may also experience impairment in thinking, judgment, and motor coordination. You should avoid or limit the use of alcohol while being treated with methoxyflurane. Do not use more than the recommended dose of methoxyflurane, and avoid driving, operating machinery, or engaging in potentially hazardous activities requiring mental alertness and motor coordination until you know how the medication affects you. Talk to your doctor if you have any questions or concerns. 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

pseudoephedrine food

Applies to: Dristan Cold Non-Drowsy (acetaminophen / pseudoephedrine)

Both pseudoephedrine and caffeine can increase blood pressure and heart rate, and combining them may enhance these effects. Talk to your doctor before using these medications, especially if you have a history of high blood pressure or heart disease. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects. 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

acetaminophen food

Applies to: Dristan Cold Non-Drowsy (acetaminophen / pseudoephedrine)

Consumer information for this interaction is not currently available.

MONITOR: Smoking cessation may lead to elevated plasma concentrations and enhanced pharmacologic effects of drugs that are substrates of CYP450 1A2 (and possibly CYP450 1A1) and/or certain drugs with a narrow therapeutic index (e.g., flecainide, pentazocine). One proposed mechanism is related to the loss of CYP450 1A2 and 1A1 induction by polycyclic aromatic hydrocarbons in tobacco smoke; when smoking cessation agents are initiated and smoking stops, the metabolism of certain drugs may decrease leading to increased plasma concentrations. The mechanism by which smoking cessation affects narrow therapeutic index drugs that are not known substrates of CYP450 1A2 or 1A1 is unknown. The clinical significance of this interaction is unknown as clinical data are lacking.

MANAGEMENT: Until more information is available, caution is advisable if smoking cessation agents are used concomitantly with drugs that are substrates of CYP450 1A2 or 1A1 and/or those with a narrow therapeutic range. Patients receiving smoking cessation agents may require periodic dose adjustments and closer clinical and laboratory monitoring of medications that are substrates of CYP450 1A2 or 1A1.

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.


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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.