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ThunderWunders Calming Chews help reduce signs of stress by utilizing ingredients like Chamomile, Tryptophan, Thiamin, & Melatonin. This drug free chew works great for short-term stressful situations and travel. Thiamine, L-Tryptophan, & Passion Fruit help reduce stress and tension. Melatonin & Chamomile promotes rest and relaxation, and Ginger Root supports sensitive stomachs.