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(benzonatate, USP) 100 mg Perles and 200 mg Capsules


TESSALON (benzonatate), a non-narcotic oral antitussive agent, is 2, 5, 8, 11, 14, 17, 20, 23, 26-nonaoxaoctacosan-28-yl p(butylamino) benzoate; with a molecular weight of 603.7.

TESSALON® (benzonatate) Structural Formula Illustration

Each TESSALON Perle contains:

Benzonatate, USP 100 mg

Each TESSALON Capsule contains:

Benzonatate, USP 200 mg

TESSALON (benzonatate) Capsules also contain: D&C Yellow 10, gelatin, glycerin, methylparaben and propylparaben.

What are the possible side effects of benzonatate (Tessalon, Tessalon Perles, Zonatuss)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking benzonatate and call your doctor at once if you have a serious side effect such as:

  • a choking feeling;
  • chest pain or numbness;
  • feeling like you might pass out;
  • confusion; or
  • hallucinations.

Some of these side effects may result from chewing or sucking on a benzonatate capsule.

Less serious side effects may...

Read All Potential Side Effects and See Pictures of Tessalon »

What are the precautions when taking benzonatate capsules (Tessalon)?

Before taking benzonatate, tell your doctor or pharmacist if you are allergic to it; or to certain anesthetic agents (e.g., procaine, tetracaine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history.

This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is not known if this medication...

Read All Potential Precautions of Tessalon »

Pharmacist reviewed on 10/30/2014

Prescribing Document Revised: January 2011

This monograph has been modified to include the generic and brand name in many instances.

Tessalon - User Reviews

Tessalon User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Tessalon sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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