Over-the-counter (OTC) antihistamines like Zyrtec (cetirizine) and Claritin (loratadine) can help reduce allergy symptoms like itching, runny nose, sneezing, cough, flushing, nasal congestion, and pain. Quercetin may help relieve allergies by blocking the release of histamine and decreasing cytokines, which are proteins that cause inflammation. Studies show that probiotic strains like Lactobacillus rhamnosus and Bifidobacterium spp can help reduce inflammation caused by allergens and histamine production. Ceylon CinnamonCeylon cinnamon, also known as true cinnamon, may help reduce allergic inflammation and is currently promoted for allergic rhinitis relief. It's popular for treating colds, and its roots may help relieve allergy symptoms.