Allergy & Cold and Sinus

The over-the-counter drugs used in relieving symptoms associated with allergies, cold, and sinus infections include allergy, cold, and sinus medicines. They come in different forms, pills, liquids, nasal sprays, etc. The active ingredients they contain can be different, targeting specific symptoms. Some of the commonly known types of allergy medicines are antihistamines, which block histamine. Histamine is a chemical in the body that reacts to allergens. Histamine triggers an itch, sneezing, and runny nose. Since there are different types of antihistamines available, such as pills, liquids and as well as nasal sprays, it is capable of unblocking allergy symptoms.