Animal Health Options ProQuiet is helpful for maintaining a healthy nervous system and mental attitude. It has been tested and is safe and effective for use as directed. ProQuiet is safe enough to use daily or can be used as needed in stressful situations. Flavored chewable tablets savored by both dogs and cats. The 7 tablet size is perfect for short term use, such as holidays and travel. Ingredients: L-Tryptophane, Taurine, Hops, Chamomile, Brewers Yeast, Vitamin B3, Vitamin B6, Ginger, Vitamin B12, and Folic Acid.