Jini Says: The absolute best allergy relief I've found entails doing all 4 of the following: Take 1000 mg of Quercetin (natural antihistamine) per day, use homeopathic eyedrops containing Euphrasia if you get itchy, runny eyes. Use a neti pot to flush your sinuses 1 to 3 times per day and boost your immune system by not eating sugar and taking vitamin C.