Neurofen/ibuprofen

I'm 18 (Though still take child liquid neurofen because I can't swallow tablets easily.) and everytime I take the liqued neurofen as soon as I swallow my throat tingles for a split second and then instantly closes. I can bearly breath till I drink something right after. My tongue doesn't swell and as far as I'm aware nothing else happens (although I did take three of the seringe things they come with and I feel a little light headed now.).

Is this an allergic reaction to ibuprofen? This has happened for a long while now, and I still take it, but I was wondering that if it IS an allergic reaction, should I deffinatly stop taking anything with ibuprofen in, and if so is there anything similar or linked to ibuprofen I should also avoid.

--Vyren.