Bentoquatam (Topical)

Bentoquatam is a topical drug available without a prescription, available in lotion or suspension form that works to shield skin from the effects


What is Bentoquatam?

Bentoquatam is a skin protection topical medication that is available over the counter without a prescription. Bentoquatam protects against poisonous plants such as poison ivy, poison oak and poison sumac.

How does Bentoquatam work?

Bentoquatam works by forming a barrier against the oils found in poisonous plants such as poison ivy, poison oak and poison sumac. It is applied like a lotion in an even, wet layer. When dry, it appears clay-like and coats the skin for an effective time period of four hours, after which it will need to be reapplied. It is required that you apply Bentoquatam at least 15 minutes before exposure to any poisonous plants such as poison ivy, poison sumac or poison oak.

Bentoquatam should not be used on skin that has already developed a rash from the oils in poisonous plants; it is effective only before exposure for its barrier-like action. Bentoquatam does not dry oozing or weeping known to be caused by poison ivy, poison sumac or poison oak rashes. Bentoquatam is also known under its marketing name of Ivy Block.

Bentoquatam can be used at any time of year; poisonous plants are not seasonal and can have an effect on the skin even during the cold months of the year. Use Bentoquatam even if you are wearing protective clothing, as poisonous oils from these plants can linger on clothing, shoes, garden tools or pets and you may come in contact with them in a secondary way, which Bentoquatam is also effective for if applied as directed.

Conditions treated

  • Preventive against the effects of poison ivy, poison oak and poison sumac

Type of medicine

  • Skin shield

Side effects

Occasionally medications will cause some patients to have unwanted side effects in addition to the desired actions they take against health conditions. Not all patients experience side effects and those who do typically consider them to be mild. Side effects typically disappear after the course of medication is finished.

With Bentoquatam, you may experience the following mild side effect:

  • Slight skin redness

Other side effects may occur; if these seem prolonged or severe in nature, contact your health care provider immediately.


Bentoquatam's barrier against poison ivy, poison sumac and poison oak is somewhat protective; avoiding exposure to these plants is the best way to prevent skin reactions to their oils, which causes rashes, sores and other issues.

Bentoquatam should be used only on skin and kept away from eyes; if it does go in your eyes, wash them with large amounts of cool, clear tap water immediately for at least 20 minutes. Contact your doctor immediately if your eyes continue to burn or you have pain.

To apply Bentoquatam:

  • Shake the Bentoquatam well before using
  • Smooth the lotion on your skin to leave an even, wet film
  • Allow Bentoquatam to dry for at least 15 minutes

Bentoquatam's protection lasts approximately four hours and must be re-applied to continue protection. If you notice that you can no longer see the hazy, clay-like film that Bentoquatam leaves on your skin, it's time to reapply. Remove any Bentoquatam by washing with soap and water after its protection is no longer needed.

Different patients will require a different dosage of Bentoquatam; a thin, wet layer should be visible upon correct application of the lotion without dripping or running. Bentoquatam can be used on adults and children at least six years of age and older; for application on children less than six years of age, check with your medical professional for advice prior to using.


Your doctor should be informed if you've ever had an allergy to Bentoquatam in the past. Any other drug allergy should also be shared with your doctor prior to treatment with this medication. If you have any allergies to foods, preservatives, dyes or animals let your medical professional know prior to beginning treatment with Bentoquatam in case of any risk of unwanted side effects.

No specific information is available on studies done on the effectiveness or safety risks of use of Bentoquatam on children under six years of age. Use of Bentoquatam on this age group is not recommended.

Geriatric patients using Bentoquatam have not been studied for any changes to the effectiveness of the medication or increased safety risks to their health while using the drug. Bentoquatam is not expected to cause any problems for this age group with regard to effectiveness or safety.

It is recommended that you avoid using other topical medications while using Bentoquatam to prevent poison ivy, poison oak or poison sumac effects on your skin. Do not apply this product to skin that has already been affected by a skin rash or any other skin condition. If you experience a reaction in the form of unwanted side effects, inform your doctor immediately that you are using Bentoquatam along with any other drugs, whether they are prescription, non-prescription, holistic, herbal or vitamin supplements to eliminate the possibility of a reaction between the two.

Do not use Bentoquatam in or near the eyes; if the lotion goes in your eyes wash for 20 minutes with cool, clear tap water in large amounts. Contact your doctor immediately if your eyes continue to burn or you have pain.

Reactions with certain foods, alcoholic beverages, illegal drugs and tobacco products should be reviewed on the medical information supplied with Bentoquatam or discussed with your physician prior to use of this drug.


Discuss the use of Bentoquatam with your health care provider prior to using it if you are pregnant or breastfeeding.

Bentoquatam is designed to be used before you are exposed to poison ivy, poison oak or poison sumac; it is not for treatment for the rash you contract after being exposed to the poisonous oils of these plants and should not be applied to skin that has symptoms including rash, sores or open, weeping wounds.

Apply Bentoquatam at least 15 minutes before you are exposed to a poisonous plant; reapply every four hours or when skin haze disappears, whichever comes first, to get the maximum protection offered by this drug.

Get medical help immediately if you exhibit signs that you are allergic to Bentoquatam. The following signs may indicate an allergic reaction to this drug:

  • Hives
  • Difficulty breathing
  • Swollen face, lips, tongue or throat

Stop using Bentoquatam and contact your doctor immediately if you have any kind of skin reaction after applying the lotion. If you have any medical conditions or allergies that may interact with Bentoquatam, it is advised that you contact your health care provider prior to using this medication to avoid any unwanted side effects that could cause long-term health consequences.

Overdose of Bentoquatam is not typically dangerous, but if you feel you have used too much Bentoquatam, contact emergency medical services immediately. If any Bentoquatam gets in the eyes or is swallowed, contact emergency medical services immediately.

Using more than a thin, protective layer of Bentoquatam is not dangerous but is not suggested, as it will not be more effective.

Your pharmacist is a good resource for any questions you may have on Bentoquatam or Ivy Block should you find yourself in need of additional information after reviewing all packaging instructions and warnings.


Store Bentoquatam medication in the original packaging at room temperature away from sources of heat, light and moisture. Do not allow Bentoquatam to freeze. Keep this medication and others out of sight and reach of children and pets. Keep the bottle tightly closed when you aren't using Bentoquatam.

If you have unused or expired Bentoquatam, consult your doctor or pharmacist about the safest way to dispose of this medication.


Bentoquatam is sold under the brand name of Ivy Block and is available without a prescription. Used to prevent the painful, itchy skin rashes associated with contact of poisonous plants such as poison ivy, poison oak or poison sumac, Bentoquatam should be applied at least 15 minutes before exposure. A thin, even, wet film of Bentoquatam lotion on your exposed skin areas is all that is needed; allowing the application to dry before venturing into areas where these poisonous plants may exist. Reapplication of Bentoquatam is required every four hours or as the film it leaves on the skin disappears.

Bentoquatam typically does not have any side effects but may give some patients a mild, red skin rash with use. In case of a severe allergic reaction, this skin rash will be severe and prolonged. Use of Bentoquatam should be stopped immediately and your doctor should be notified right away. Do not allow Bentoquatam to come in contact with eyes; if it does, wash them with cool, clear tap water for at least 20 minutes. Contact your health care provider if you are still experiencing pain or burning after washing. If someone swallows Bentoquatam, seek emergency medical help right away.

Over use of Bentoquatam will not typically cause any side effects; if you feel you have overused this drug, contact emergency medical services immediately. Do not use on children under six years of age or if you are pregnant or breastfeeding.

Store Bentoquatam in its original packaging with the bottle closed tightly when not in use. Keep this medication out of direct light, heat or moisture sources and do not allow it to freeze. Store at room temperature and out of sight and reach of children and pets. Discard any unused or expired Bentoquatam per the advice of your doctor or pharmacist.

Last Reviewed:
December 24, 2017
Last Updated:
April 04, 2018