Webfeb 1, 2024 · it is not to be used for chronic cough that occurs with smoking, asthma, or emphysema or when there is an unusually large amount of mucus or phlegm with the. Webfeb 9, 2018 · benzonatate (tessalon) is an oral drug used to relieve coughing. Learn about side effects, warnings, dosage, and more. Webbenzonatate is a cough suppressant that relieves cough. It works by calming your cough reflex. Common brand names for this medication include tessalon®, perles® and. Webfeb 8, 2018 · benzonatate (tessalon) is an oral…