NAF Kof Eze. Help provide relief from respiratory stress with NAF Kof Eze. With modern husbandry from stabling to forage and indoor schools â€\\\" dust and fungal spores can add up and irritate the sensitive lining of the horse lungs and respiratory tract. No matter whether respiratory stress is seen in exercise or whether it occurs frequently throughout the day, NAF Kof Eze offers a highly palatable linctus with added teatree and peppermint to help provide a pleasant yet soothing liquid. NAF Kof Eze can be used in conjunction with other respiratory supplements and should be used immediately prior to exercise.