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Generic Name: bentoquatam topical (BEN toe KWA tam)
Brand Name: IvyBlock

Medically reviewed by on Jul 9, 2018 – Written by Cerner Multum

What is IvyBlock?

Bentoquatam forms a barrier to protect the skin against oils from certain poisonous plants.

IvyBlock (for the skin) is used to prevent skin rash or irritation caused by coming into contact with poison ivy, poison oak, or poison sumac.

IvyBlock should not be applied to a skin rash caused by a poisonous plant. IvyBlock will only prevent skin irritation. It will not treat irritation or an allergic reaction.

Bentoquatam may also be used for purposes not listed in this medication guide.

Important Information

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Before taking this medicine

You should not use IvyBlock if you are allergic to it.

Ask a doctor or pharmacist if it is safe for you to use IvyBlock if you have other medical conditions.

Do not use this medicine without a doctor's advice if you are pregnant or breast-feeding a baby.

IvyBlock should not be given to a child younger than 6 years old without medical advice.

How should I use IvyBlock?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Shake the lotion well just before each use.

Apply IvyBlock to the hands, arms, and legs at least 15 minutes before you may be exposed to a poisonous plant.

IvyBlock will form a thin white film on your skin when it dries. This will not affect the protective action of the medicine.

For best results, reapply the medicine every 4 hours while you are in an area of possible exposure to a poisonous plant.

Wash off the medicine with soap and water when you are no longer exposed to poisonous plants.

You should use bentoquatam even if you are wearing protective clothing. Poisonous plant oils can stay on clothing, shoes, tools, and even pets. You may come into contact with the oil through "secondary contact" with such a contaminated item.

Bentoquatam can be used year-round. The poisonous oils in plants such as poison ivy are not seasonal and can cause skin irritation even during cold weather months.

Store at room temperature away from moisture and heat. Do not allow the medicine to freeze. Keep the bottle tightly closed when not in use.

What happens if I miss a dose?

Since IvyBlock is used as needed, it does not have a dosing schedule. Using extra lotion to make up a missed dose will not make the medication more effective.

What happens if I overdose?

An overdose of bentoquatam topical is not expected to be dangerous. Seek emergency medical attention or call the Poison Help line at 1-800-222-1222 if anyone has accidentally swallowed the medication.

What should I avoid while using IvyBlock?

Avoid getting IvyBlock in your eyes. If this does happen, rinse with large amounts of cool water for 20 minutes. Call your doctor if you you have ongoing pain or burning in your eyes.

IvyBlock side effects

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

Stop using this medicine and call your doctor at once if you have any type of severe skin reaction after applying the medicine.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect IvyBlock?

It is not likely that other drugs you take orally or inject will have an effect on topically applied bentoquatam. But many drugs can interact with each other. Tell each of your health care providers about all medicines you use, including prescription and over-the-counter medicines, vitamins, and herbal products.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.