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NAF 5 Star Oestress provides nutritional support of the hormonal imbalances in mares. Hormonal imbalances can cause mood swings, hypersensitivity and poor performance. NAF 5 Star Oestress contains natural ingredients specifically chosen to help prevent “marish” behavior. These include a range of natural materials providing anti-oxidants: glutathione, vitamins and minerals, carotenoids, bioflavanoids and trace elements chosen to support hormone regulation.