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Seconal Sodium

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Seconal Sodium

Seconal Sodium Patient Information Including Side Effects

Brand Names: Seconal Sodium

Generic Name: secobarbital (Pronunciation: SEE koe BAR bi tal)

What is secobarbital (Seconal Sodium)?

Secobarbital is in a group of drugs called barbiturates (bar-BIT-chur-ates). Secobarbital slows the activity of your brain and nervous system.

Secobarbital is used short-term to treat insomnia, or as a sedative before surgery.

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

Seconal 100 mg

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What are the possible side effects of secobarbital (Seconal Sodium)?

Call your doctor at once if you have any of these serious side effects:

  • restless muscle movements in your eyes, tongue, jaw, or neck;
  • slow heartbeat, shallow breathing;
  • feeling like you might pass out;
  • a fever or a sore throat;
  • sores in your mouth;
  • easy bruising or bleeding; or
  • ongoing nightmares or increased dreaming.

Less serious side effects may include:

  • drowsiness or dizziness;
  • problems with memory or concentration;
  • excitement (especially in children or older adults);
  • upset stomach, constipation;
  • headache; or
  • "hangover" effect (drowsiness the day after a dose).

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.

Read the Seconal Sodium (secobarbital sodium capsules) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about secobarbital (Seconal Sodium)?

Some people using this medicine have engaged in activity such as driving, and later having no memory of the activity. If this happens to you, stop taking secobarbital and talk with your doctor about another treatment for your sleep disorder.

Secobarbital can make birth control pills less effective. Ask your doctor about using a non-hormone method of birth control (such as a condom, diaphragm, spermicide) to prevent pregnancy while taking secobarbital.

Secobarbital may be habit-forming and should be used only by the person it was prescribed for. Secobarbital should never be shared with another person, especially someone who has a history of drug abuse or addiction. Keep the medication in a secure place where others cannot get to it.

Side Effects Centers

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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