Oregro-HS is a water-soluble balanced solution containing Oreganum essential oil extracted from the plant Oreganum vulgare, Vitamin C, Vitamin E and electrolytes specially designed for heat stress in all ages of poultry. Feed additive for poultry and swine For use in times of heat stress: To help birds cope with heat stress. To promote health growth and performance during times of heat stress. Enhance growth, production and performance during heat stress.