The figure shows two brands of an otc medicine used for relief of nasal congestion caused by allergies or the common cold. both of these medicines are

Both of the medicines are nasal decongestant and contain antihistamine that help relieve common cold, stuffy nose and nasal congestion caused by allergens. These allergens make your nose-lining swell and nasal decongestant will shrink swollen blood vessels and tissues making it easier to breathe. Meanwhile, the antihistamine will get rid the sensation of itching or sneezing.