I've had hayfever from when I was very small, your body gets used to some antihistamines after a couple of years and various ones may work while some do not.
However this one has worked for me brilliantly for the last 3 years:
1. Flixonase Allergy Nasal Spray (£6.99/60 sprays) from pharmacies nationwideA recent review suggested that nasal corticosteroid sprays, which have revolutionised hay fever treatment, offer better relief of symptoms than oral antihistamines, and that using both together does not provide additional benefit compared with using nasal corticosteroids alone. There is no clear evidence to suggest one nasal corticosteroid spray is more effective than another - all have a similar potential for causing nosebleeds. Some sprays are significantly more expensive, so it's worth trying the cheaper ones first. Apply two sprays per nostril per day, preferably in the morning, increasing to a maximum of twice daily use if required. Once control of symptoms is achieved, reduce down to just one spray per nostril per day. Do not use for more than three months.
It works on all symptons - itchy eyes, nose, throat etc and you can 'top up' in the evening when you go out.Evening is the worst time so its best to stay in doors as much as possible.
Hope you get to grips with it, its never pleasant and can make you feel shattered.
lol
Linda