Over-the-counter medication: the drug interactions we overlook

Area of Science:

• Geriatric Medicine
• Pharmacology
• Patient Safety

Background:

• Elderly patients often manage multiple chronic conditions, increasing their vulnerability to drug-drug interactions.
• Self-medication with over-the-counter (OTC) preparations is common in this demographic, adding complexity to medication regimens.
• Poor patient-provider communication and lack of geriatric care training for providers contribute to medication-related risks.

Purpose of the Study:

• To highlight the risks of drug-drug interactions in elderly patients, particularly those involving OTC medications.
• To emphasize the importance of patient-provider communication and provider education in geriatric pharmacotherapy.
• To examine specific examples of OTC-prescription drug interactions, such as those involving salicylates and antacids.

Main Methods:

• Review of potential drug-drug interactions involving common OTC medications in the elderly population.
• Analysis of patient and provider behaviors impacting medication adherence and safety.
• Case examples illustrating interactions between OTC drugs (salicylates, antacids) and prescription medications.

Main Results:

• Over-the-counter medications, like aspirin and antacids, can lead to dangerous interactions with prescription drugs.
• Aspirin in OTC products can cause hypothermia and adverse reactions, especially in asthmatic patients.
• Antacids can alter drug absorption and excretion by changing gastric and urinary pH, impacting therapeutic effectiveness.

Conclusions:

• Providers must be vigilant about potential OTC-prescription drug interactions in elderly patients.
• Addressing patient-provider communication barriers and provider education on geriatric pharmacotherapy is crucial.
• Attention to dosage forms and clear labeling of OTC products containing active ingredients like aspirin is recommended for improved medication safety.