It depends on exactly what meds he takes. If he's not on a beta-blocker class of medicine, then the best therapy is sublingual immunotherapy, aka allergy drops. He'll need to see an allergist or ENT doctor for this. If he is on a beta blocker, then traditional antihistamines are his best bet, though you should always check w your personal physician before you take and new medications to be sure its safe for you.
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