Tessalon (generic: benzonatate) is a prescription medication used to relieve cough. Tessalon belongs to a group of drugs known as cough suppressants, which work by decreasing the cough reflex in the airways and lungs.

Tessalon comes in capsule form and is usually taken by mouth up to 3 times a day. The capsules should be swallowed whole. Do not crush, dissolve, or chew Tessalon capsules.

Common side effects of Tessalon include constipation, headache, and stomach upset. Tessalon can cause drowsiness, dizziness, and visual side effects. Do not drive or operate heavy machinery until you know how Tessalon affects you.