I know this is an old thread but I thought I might as well drop a note here rather than start a new one!
I have allergic asthma, and had slight problems in England during spring, and in Malaysia (shih tzu at home) - but nothing could compare with the asthma and blocked nose i suffered in Zurich! It was so bad that my inhaler no longer worked, I needed to take anti-histamines instead. I was even on corticosteroids (Pulmicort), and since that didn't work great, I was "upgraded" to Symbicort - a combo corticosteroid and bronchodilator - which actually made things worse!
I finally tried acupuncture+acupressure last February (2009) and went for treatment every week during the pollen season and every 2 weeks for the months after that. I stopped taking my corticosteroids because I ran out and was too lazy to get a doctors appointment

i can definitely say it was a success. while i still get slight allergy attacks, instead of full-blown chesty asthma, i only have a swelling in my throat/trachea which is more an irritation rather than a breathing problem. my acupuncturist also taught me some points that i can press to alleviate my symptoms. I've reduced inhaler use to about once a month (compared to 3x a day in my first Zurich spring).
I would highly recommend giving acupuncture a shot! It's covered by insurance if you get the alternative therapy option. It's more expensive than taking anti-histamines, but at least there are no side effects (and it's not a very painful procedure at all).
I'm also going to try taking local honey to see if I can reduce my allergies further... (anyone know more about this?) I've found honey from imkerin.ch but don't know if they heat-treat their honey (and whether heat-treated honey would work as well for allergies since the antigens would then be destroyed)...