The one's you can buy aren't very strong. My son suffered really badly, really swollen eyes, sneezing, can't breath, headaches and he also gets asthma with his hayfever. We often changed the tablets regularly which worked better than using the same ones all the time. Also I have just bought him a thing called a Hayband off the internet and trust me, it has transformed his life and he has only been using it for three weeks! It works on the idea of acupuncture and you wear it on your arm. There is a little plastic 'button' on the hayband which puts constant pressure on a point on the inside of your elbow. It is very unobtrusive and wearable, is skin coloured (or pink - if you would want to wear pink), washable and it works - so far, so good. You can wear it all the time and you can also take your other medication whilst wearing it. Give it a try, it only cost us £12.00 inc. p & p. Let me know how you get on.