Locations Main Campus: Chesterfield, MO 63017   |   Locations
314-434-1500 314-434-1500   |   Contact Us

Multimedia Encyclopedia

E-mail Form
Email Results


Drain opener poisoning

Drain opening agents


Drain opening agents are chemicals used to open clogged drains, often in homes. Drain opening agent poisoning can occur if a child accidentally drinks these chemicals, or if someone splashes the poison into the eyes when pouring it or breathes in the fumes of "foaming" drain openers.

This article is for information only. Do NOT use it to treat or manage an actual poison exposure. If you or someone you are with has an exposure, call your local emergency number (such as 911), or your local poison center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States.

Poisonous Ingredient


Poisonous ingredients include:

  • Hydrochloric acid
  • Lye (sodium hydroxide or caustic soda)
  • Potassium hydroxide
  • Sulfuric acid


Where Found


These chemicals are found in drain cleaners or opener products. These agents may also be present in other sources.




Drain opener poisoning can cause symptoms in many parts of the body.


  • Severe change in acid level of blood (pH balance), which leads to damage in all of the body organs


  • Burns to the eyes, which may result in permanent vision loss
  • Severe pain in the throat
  • Severe pain or burning in the nose, eyes, ears, lips, or tongue


  • Blood in the stool
  • Burns and possible holes in the throat (esophagus)
  • Severe abdominal pain
  • Vomiting
  • Vomiting blood


  • Collapse
  • Low blood pressure that develops rapidly


  • Breathing difficulty (from breathing in drain opening agent)
  • Throat swelling (may also cause breathing difficulty)


  • Burns
  • Holes (necrosis) in the skin or tissues underneath
  • Irritation


Home Care


Seek medical help RIGHT AWAY. Do NOT make a person throw up unless told to do so by poison control or a health care professional.

If the chemical is on the skin or in the eyes, flush with lots of water for at least 15 minutes.

If the chemical was swallowed, immediately give the person water or milk, unless instructed otherwise by a health care provider. Do NOT give water or milk if the person is having symptoms (such as vomiting, convulsions, or a decreased level of alertness) that make it hard to swallow.

If the person breathed in the poison, immediately move them to fresh air.


Before Calling Emergency


Get the following information:

  • Person's age, weight, and condition
  • Name of the product (and ingredients and strength, if known)
  • Time it was swallowed
  • Amount swallowed


Poison Control


Your local poison center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States. This national hotline number will let you talk to experts in poisoning. They will give you further instructions.

This is a free and confidential service. All local poison control centers in the United States use this national number. You should call if you have any questions about poisoning or poison prevention. It does NOT need to be an emergency. You can call for any reason, 24 hours a day, 7 days a week.


What to Expect at the Emergency Room


The health care provider will measure and monitor the person's vital signs, including temperature, pulse, breathing rate, and blood pressure. Symptoms will be treated as appropriate. The person may receive:

  • Breathing support, including tube through the mouth into the lungs, and breathing machine (ventilator)
  • Bronchoscopy: camera down the throat to see burns in the airways and lungs
  • Chest x-ray
  • EKG (heart tracing)
  • Endoscopy: camera down the throat to see burns in the esophagus and the stomach
  • Fluids through the vein (by IV)
  • Medicines for pain
  • Surgical removal of burned skin (skin debridement)
  • Washing of the skin (irrigation), perhaps every few hours for several days


Outlook (Prognosis)


How well a person does depends on the amount of poison swallowed and how quickly treatment is received. The faster the person gets medical help, the better the chance for recovery.

If this type of poison gets in the eye, it can be very dangerous and difficult to manage. Loss of vision is common. Swallowing such poisons can have severe effects on many parts of the body.

Damage continues to occur to the esophagus and stomach for several weeks after the poison was swallowed.




Wax PM, Young A. Caustics. In: Marx JA, Hockberger RS, Walls RM, et al, eds. Rosen's Emergency Medicine: Concepts and Clinical Practice . 8th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 153.


        A Closer Look


          Self Care


            Tests for Drain opener poisoning



              Review Date: 11/4/2015

              Reviewed By: Jesse Borke, MD, FACEP, FAAEM, Attending Physician at FDR Medical Services/Millard Fillmore Suburban Hospital, Buffalo, NY. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

              The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.




              A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.

              Content is best viewed in IE9 or above, Firefox and Google Chrome browser.