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Secobarbital overdose

Secobarbital is a drug used to treat insomnia (difficulty falling or staying asleep). It is in a class of medicines called barbiturates. It may also be given before surgery to relieve anxiety. Secobarbital overdose occurs when someone intentionally or accidentally takes too much of this medicine.

This article is for information only. Do NOT use it to treat or manage an actual overdose. If you or someone you are with overdoses, call the local emergency number (such as 911), or the 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.

Secobarbital

Where Found

A brand name of this drug is Seconal.

Symptoms

Symptoms of a secobarbital overdose may include:

  • Blurred or double vision, rapid side-to-side movement of eyes (nystagmus)
  • Coma (decreased level of consciousness and lack of responsiveness)
  • Confusion
  • Dizziness
  • Drowsiness, tiredness, fainting
  • Muscle and skin damage (discoloration, blisters, ulcers) from lying on a hard surface while stuporous or in a coma)
  • Nausea
  • Rash or blisters
  • Shock (extremely low blood pressure)
  • Slowed or absent breathing
  • Stupor (decreased level of alertness)
  • Slurred speech
  • Weakness, uncoordinated movement, staggering gait (ataxia, seen commonly in children)

Before Calling Emergency

The following information is helpful for emergency assistance:

  • The person's age, weight, and condition
  • The name of the product (ingredients and strengths if known)
  • The time it was swallowed
  • The amount swallowed
  • If the medicine was prescribed for the person

However, DO NOT delay calling for help if this information is not immediately available.

Poison Control

Your local poison control 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 hotline 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.

Take the container with you to the hospital, if possible.

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:

  • Activated charcoal
  • Blood and urine tests
  • Breathing support, including oxygen, tube through the mouth (intubation), and ventilator (breathing machine)
  • Computerized axial tomography (CT, or advanced imaging) scan
  • Chest x-ray
  • ECG (electrocardiogram, or heart tracing)
  • Fluids through the vein (intravenous or IV)
  • Laxatives
  • Medicines to treat symptoms

People who have persistent symptoms after initial treatment may need to be admitted to the hospital for further care.

Outlook (Prognosis)

How well the person does depends on the severity of the overdose and how quickly treatment is received. With proper treatment, people can recover in 1 to 5 days. 

People who are in a prolonged coma or who have respiratory complications, or those who develop shock may have permanent disability. 

References

Aronson JK. Barbiturates. In: Aronson JK, ed. Meyler's Side Effects of Drugs. 16th ed. Waltham, MA: Elsevier; 2016:819-826.

Gussow L, Carlson A. Sedative hypnotics. In: Walls RM, Hockberger RS, Gausche-Hill M, eds. Rosen's Emergency Medicine: Concepts and Clinical Practice. 9th ed. Philadelphia, PA: Elsevier; 2018:chap 159.

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Review Date: 1/1/2021

Reviewed By: Jacob L. Heller, MD, MHA, Emergency Medicine, Emeritus, Virginia Mason Medical Center, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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