Naf Oestress compliments a mare’s natural oestrus cycle and contains extracts of herbal ingredients that have been used for hundreds of years to support hormone balance. Oestress also provides bio-available magnesium to relax muscle tension and encourage calmness, it is also rich in natural antioxidants to support a healthy system. Oestress should be fed daily throughout the spring and summer season and may be increased in accordance with a mares oestrus cycle, if needed Oestress can be used safely all year round.