Drug Interactions between Alka-Seltzer Original and peppermint oil

Using sodium bicarbonate together with aspirin may decrease the effects of aspirin. Contact your doctor if your condition changes. 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.

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ADJUST DOSING INTERVAL: Administration of enteric-coated, gastro-resistant formulations of peppermint oil (e.g., delayed or sustained release capsules) concurrently with antacids may cause premature dissolution of the enteric coating and early release of the peppermint oil, which could lead to gastrointestinal irritation and reduced therapeutic effects. The use of other medications that can reduce gastric acid, such as H2-receptor antagonists and proton pump inhibitors, may also cause similar issues.

MANAGEMENT: Acid-lowering medications should not be administered at the same time as enteric-coated, gastro-resistant formulations of peppermint oil. In general, H2-receptor antagonists and proton pump inhibitors should preferably be avoided, while antacids should be administered at least 2 hours before or 2 hours after the peppermint oil preparation. The labeling for the specific product should be consulted for administration recommendations and other guidance.