Other Information: Each tablet contains calcium 65 mg. Store at room temperature 68-77 degrees F (20-25 degrees C). Avoid excessive heat (greater than 100% degrees F) or humidity. Misc: Safe & effective. Functional caffeine for mental alertness. Vivarin - Making the most of every day. www.vivarin.com. Questions or comments? Call toll free 1-855-874-0970 weekdays. Vivarin helps restore mental alertness or wakefulness when experiencing fatigue or drowsiness.