New Delhi, May 20 -- Cough can leave your throat feeling as dry as sandpaper, disrupt your sleep and cause discomfort. Many people turn to over-the-counter cough syrups for relief. These are packed with active ingredients, which can provide temporary relief from respiratory issues. They generally contain antitussives, expectorants, decongestants, botanical extracts and antihistamines. These ingredients work to suppress the cough reflex, loosen mucus in the airways, reduce nasal congestion and alleviate symptoms like sneezing and itching. Cough syrups act on the cough centre in the brain, reduce the urge to cough, promote clearer breathing, constrict blood vessels in the nasal passage, and reduce swelling and congestion to alleviate stuffy...