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Article 3
June 20, 2025
How Allergy Medicines Work
Seasonal allergies flare when pollen, dust, or pet dander trigger histamine release, producing sneezing, runny nose, and itchy eyes. Modern oral antihistamines loratadine 10 mg or cetirizine 10 mg occupy histamine H1-receptors within thirty minutes and keep symptoms controlled for twenty four hours without the sedating effect of older products. For stubborn nasal blockage, a three-day course of oxymetazoline spray may be added, while saline rinses flush irritants and keep passages moist.
Safe Dosing and Practical Tips
Start your antihistamine one to two days before peak pollen counts or dusty housework, and take each dose at the same time daily for steady protection. Never combine two oral antihistamines; doubling up adds side-effects without extra relief. Check with our pharmacist before using decongestants if you have hypertension, glaucoma, or thyroid disease. Pregnant patients should use chlorphenamine only under medical advice, and children require weight-based syrup formulas for safe, effective symptom control.