I think you're duty bound to tell them homer.
Singulair does seem to work extremely well, I suspect the boys in the white coats would be more interested in this, rather than the drug itself.
Good asthma care invovles
prevention of problems, rather than sticking a plaster on an exascerbation, so it sound like your GP's acted correctly in this case, but for future reference, it's worth informing him of the why's and wherefores of the dark art of aviation medicals next time he wants to fiddle with your regime.
Try pming AMEandPPL, he seems to know the ins and outs better than most.
And let us know how you get on for future reference.
