Drug Interactions between ephedrine / phenobarbital / potassium iodide / theophylline and Prevacid NapraPAC
This report displays the potential drug interactions for the following 2 drugs:
- ephedrine/phenobarbital/potassium iodide/theophylline
- Prevacid NapraPAC (lansoprazole/naproxen)
Interactions between your drugs
theophylline PHENobarbital
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline and ephedrine / phenobarbital / potassium iodide / theophylline
Using PHENobarbital together with theophylline may decrease the effects of theophylline. Contact your doctor if your condition changes or if you experience breathing difficulties. If your doctor does prescribe these medications together, you may need a dose adjustment or special test 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.
naproxen potassium iodide
Applies to: Prevacid NapraPAC (lansoprazole / naproxen) and ephedrine / phenobarbital / potassium iodide / theophylline
Talk to your doctor before using naproxen together with potassium iodide. Combining these medications may significantly increase potassium levels in the blood, especially with regular or long-term use. High levels of potassium can develop into a condition known as hyperkalemia, which in severe cases can lead to kidney failure, muscle paralysis, irregular heart rhythm, and cardiac arrest. You may be more likely to develop hyperkalemia while using these medications if you are elderly, dehydrated, or have kidney disease, diabetes, or advanced heart failure. It is important that you maintain adequate fluid intake during treatment with these medications. In addition, talk to your doctor to see if you should limit consumption of potassium-rich foods such as tomatoes, raisins, figs, potatoes, lima beans, bananas, plantains, papayas, pears, cantaloupes, mangoes, and potassium-containing salt substitutes. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. You should seek medical attention if you experience nausea, vomiting, weakness, confusion, tingling of the hands and feet, feelings of heaviness in the legs, a weak pulse, or a slow or irregular heartbeat, as these may be symptoms of hyperkalemia. 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.
naproxen lansoprazole
Applies to: Prevacid NapraPAC (lansoprazole / naproxen) and Prevacid NapraPAC (lansoprazole / naproxen)
Talk to your doctor before using naproxen together with lansoprazole. Using these medications together may affect the enteric coating of naproxen, causing the medication to be released too early in the body. This can make naproxen less effective. 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.
theophylline ePHEDrine
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline and ephedrine / phenobarbital / potassium iodide / theophylline
Information for this minor interaction is available on the professional version.
theophylline lansoprazole
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline and Prevacid NapraPAC (lansoprazole / naproxen)
Information for this minor interaction is available on the professional version.
PHENobarbital lansoprazole
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline and Prevacid NapraPAC (lansoprazole / naproxen)
Information for this minor interaction is available on the professional version.
Drug and food interactions
PHENobarbital food
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline
Ask your doctor before using PHENobarbital together with ethanol, this can add to dizziness, drowsiness and other side effects of PHENobarbital. Be careful if you drive or do activities that require you to be awake and alert. Talk with your doctor before using any medications together, or drinking alcohol with PHENobarbital. 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.
theophylline food
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline
Both smoking and excessive caffeine consumption can alter the blood levels of theophylline, which may affect the dosing. Tobacco and marijuana smoke (including secondhand exposure) generally reduces, while caffeine increases, blood levels. In addition, caffeine is a stimulant and may add to the side effects of theophylline such as headache, insomnia, and increases in blood pressure and heart rate. It is best to avoid smoking and to limit caffeine consumption during theophylline therapy. Talk to a healthcare professional if you have any questions or concerns. If you start smoking or undergo smoking cessation, your doctor may need to monitor your blood levels more closely to determine if you need a dose adjustment of theophylline. You should stop taking theophylline and seek medical attention if you experience potential signs and symptoms of excessive drug levels such as nausea, vomiting, persistent headache, insomnia, and rapid heartbeat. 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.
When theophylline is given with enteral (tube) feedings, blood levels may be decreased due to interference with its absorption. This may reduce the effectiveness of the medication. To minimize potential for interaction, you may interrupt the feeding for one hour before and one hour after the theophylline dose. You may need more frequent blood tests to monitor theophylline levels.
naproxen food
Applies to: Prevacid NapraPAC (lansoprazole / naproxen)
Ask your doctor before using naproxen together with ethanol. Do not drink alcohol while taking naproxen. Alcohol can increase your risk of stomach bleeding caused by naproxen. Call your doctor at once if you have symptoms of bleeding in your stomach or intestines. This includes black, bloody, or tarry stools, or coughing up blood or vomit that looks like coffee grounds. 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.
theophylline food
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline
Ask your doctor before using theophylline together with caffeine. Using these medications together may increase some of the side effects of theophylline. This can cause nausea, vomiting, insomnia, tremors, restlessness, uneven heartbeats, and seizure (convulsions). Avoid drinks or foods that contain caffeine, such as coffee, tea, cola, and chocolate. You may need a dose adjustment or special test if you 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.
ePHEDrine food
Applies to: ephedrine / phenobarbital / potassium iodide / theophylline
Consumer information for this interaction is not currently available.
MONITOR: Coadministration of two or more sympathomimetic agents may increase the risk of adverse effects such as nervousness, irritability, and increased heart rate. Central nervous system (CNS) stimulants, particularly amphetamines, can potentiate the adrenergic response to vasopressors and other sympathomimetic agents. Additive increases in blood pressure and heart rate may occur due to enhanced peripheral sympathetic activity.
MANAGEMENT: Caution is advised if two or more sympathomimetic agents are coadministered. Pulse and blood pressure should be closely monitored.
References
- Rosenblatt JE, Lake CR, van Kammen DP, Ziegler MG, Bunney WE Jr "Interactions of amphetamine, pimozide, and lithium on plasma norepineophrine and dopamine-beta-hydroxylase in schizophrenic patients." Psychiatry Res 1 (1979): 45-52
- Cavanaugh JH, Griffith JD, Oates JA "Effect of amphetamine on the pressor response to tyramine: formation of p-hydroxynorephedrine from amphetamine in man." Clin Pharmacol Ther 11 (1970): 656
- "Product Information. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc PROD (2001):
- "Product Information. Tenuate (diethylpropion)." Aventis Pharmaceuticals PROD (2001):
- "Product Information. Sanorex (mazindol)." Novartis Pharmaceuticals PROD (2001):
- "Product Information. Focalin (dexmethylphenidate)." Mikart Inc (2001):
- "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company (2002):
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
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
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. | |
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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