Other Information: Store at room temperature. Avoid excessive heat above 77 degrees F (25 degrees C). Misc: Alka-Seltzer plus menthol. Acetaminophen pain reliever. Up to 6 hours of long lasting pain relief. New! Does not contain aspirin. Questions or comments? 1-800-986-0369 (Mon-Fri 9AM - 5PM EST). Made in the USA.