Seconal Sodium Side Effects
Generic Name: secobarbital
Note: This page contains side effects data for the generic drug secobarbital. It is possible that some of the dosage forms included below may not apply to the brand name Seconal Sodium.
For the Consumer
Applies to secobarbital: oral capsule
Secobarbital may cause a severe allergic reaction. Stop taking secobarbital (the active ingredient contained in Seconal Sodium) and Get emergency medical help if you have any of these signs of an allergic reaction while taking secobarbital: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
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 of secobarbital may include:
drowsiness or dizziness;
problems with memory or concentration;
excitement (especially in children or older adults);
upset stomach, constipation;
"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.
For Healthcare Professionals
Applies to secobarbital: injectable solution, oral capsule
Nervous system side effects have included somnolence, headache, confusion, hyperkinesias, ataxia, and dizziness.[Ref]
Cardiovascular side effects have included bradycardia, hypotension, and syncope.[Ref]
Gastrointestinal side effects have included nausea, vomiting, and constipation.[Ref]
Hypersensitivity reactions have included angioedema, skin rash, and exfoliative dermatitis.[Ref]
Oncologic side effects have included a possible increased frequency of malignancy (particularly liver cancer and brain tumors) following use of phenobarbital and other barbiturates.[Ref]
Other side effects have included physical and psychological dependence. Withdrawal symptoms have been reported when secobarbital (the active ingredient contained in Seconal Sodium) therapy has been discontinued suddenly.[Ref]
Psychiatric side effects have included agitation, nightmares, nervousness, psychiatric disturbance, hallucinations, insomnia, anxiety, and abnormal thinking.[Ref]
Respiratory side effects have included hypoventilation and apnea.[Ref]
1. "Product Information. Seconal Sodium (secobarbital)." Marathon Pharmaceuticals, Deerfield, IL.
It is possible that some side effects of Seconal Sodium may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.
More about Seconal Sodium (secobarbital)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Drug Images
- Drug Interactions
- Support Group
- Pricing & Coupons
- En Español
- 4 Reviews – Add your own review/rating
- Drug class: barbiturates
Other brands: Seconal
Related treatment guides
Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.