Here are my top solutions to treating seasonal allergies (not in particular order of efficacy or preference). With the exception of Allegra®, the oral antihistamines can be bought over the counter.
diphenhydramine (Benadryl®): 25-50 mg every 6-8 hours as needed. Use mostly for night time symptoms.
Adverse reactions: drowsiness, dry mouth
cetirizine (Zyrtec®): 5-10 mg daily
loratidine (Claritin®): 10 mg daily
fexofenadine (Allegra®): 60 mg twice a day or 180 mg daily
Most common adverse reactions: headache, drowsiness (not as pronounce or as common as older antihistamines)
Prescription nose sprays
mometasone furoate (Nasonex®): 2 sprays each nostril daily
triamcinalone (Nasacort AQ®): 2 sprays each nostril daily
Most common adverse reactions: headache, runny nose, cough, bloody nose, viral infection (from immunosuppresion)
azelastine (Astelin®): 1-2 sprays each nostril twice a day.
Most common adverse reactions: headache, drowsiness, bad taste, runny nose and cough.
Lavender capsules (not FDA approved)
3-4 drops of Lavender in a vegetable capsules with 5-6 drops of olive oil 2-3 times a day.
Check with your family physician for accurate diagnosis and before starting any medicine or health care product.