Regular use of acetaminophen (Tylenol) in combination with alcohol has been associated with liver damage, and even plain old aspirin can lead to stomach upset, bleeding and ulcers. Antibiotics including Metronidazole (Flagyl) and Azithromycin (Zithromax) can cause nausea, vomiting, rapid heartbeat, ...
Many products cannot be used in children under 12 years of age, and some products can cause drowsiness or may contain alcohol. If you have uncontrolled high blood pressure, you should avoid decongestants. Always read the OTC Drug Facts Label found on the package or in the product box. ...