Abstract
We reported whether nasal provocation tests demonstrate the protective effect of antiallergic drugs. Beclomethasone dipropionate (Bdp) was used as a model in double-blind cross-over testing. Judging from the nasal provocation test, 14 of 17 cases showed greater protection with Bdp than with the non-active placebo, 2 cases showed greater protection with the placebo, and one case showed no difference. Thus, significant protection was seen with Bdp. It is concluded that nasal provocation test are useful in evaluating the efficacy of anti-allergic drugs like Bdp.
