Hayfever remedy. May also be used for allergic rhinitis. Non-drowsy – does not affect ability to drive or use machines. The benefit of using this type of natural remedy is that is has non of the side effects common with conventional antihistamine- type medications, such as drowsiness, fatigue and dependency. It can be used long or short term, and is suitable for those sensitive to commercial medications. Can be used with other hayfever remedies No restriction on use with asthma.