Powder formula contains natural ingredients plus valerian root to help support a healthy nervous system. Each oz contains 4,500 mg taurine, 2,500 mg valerian root, 2,000 mg thiamine and 1,200 magnesium. Dosage: Adult horses 900-1,100 lbs - 1/2-3/4 oz twice daily as needed. Safe use in pregnant animals or animals intended for breeding has not been proven. 1 oz scoop enclosed. 2 lbs = 64 servings at 1/2 oz dose.