There is no need of taking medication for allergy or breathing problems. Visit the site prakrutiyoga.com, go through the contents and start learning the techniques of nature based meditation in one of the free training centres. Of course, till you get complete relief you can continue your doctor prescribed medicines. Once you get relief in say 6 to 9 months, you need not take any medicines as long as you continue to meditate for half an hour in the morning and evening. In fact, no disease on earth in any major form can ever arise to you as long as you meditate in the way taught in the prakrutiyoga centres.