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A 31-year-old member asked:

Can benzonatate (tessalon) make you drowsy?

1 doctor answer2 doctors weighed in
Dr. Michael Sinclair
Family Medicine 38 years experience
Not likely: Tessalon perles (benzonatate) are used to treat coughing. They provide a local anesthetic to cough receptor triggers. It is unlikely that they would cause fatigue or drowsiness, but to be sure, don't take your fist dose ever and then operate a car, boat, plane, tractor, etc.

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Last updated Feb 12, 2019
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