Amobarbital (patient information)
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Why this medication is prescribed
Amobarbital, a barbiturate, is used in the short-term treatment of insomnia to help you fall asleep and stay asleep through the night. It is also used as a sedative to relieve anxiety, including anxiety before surgery.
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
How this medication should be used
Amobarbital comes as a tablet and capsule to take by mouth. Amobarbital usually is taken at bedtime as needed for sleep. It usually is taken two or three times a day for anxiety and may be taken with or without food. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take amobarbital exactly as directed.
Amobarbital can be habit-forming. Do not use amobarbital for more than 2 weeks if it is being used to help you sleep. Do not take a larger dose, take it more often, or for a longer time than your doctor tells you to. Tolerance may develop with long-term or excessive use, making this drug less effective. Do not stop taking this drug without talking to your doctor, especially if you have been taking it for a long time. Stopping this drug suddenly can cause withdrawal symptoms (anxiousness, sleeplessness, and irritability). Your doctor probably will decrease your dose gradually. If your sleep problems continue, talk to your doctor, who will determine whether this drug is right for you.
Special Precautions
Before taking amobarbital:
- tell your doctor and pharmacist if you are allergic to amobarbital or any other drugs.
- tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially acetaminophen (Tylenol); anticoagulants ('blood thinners') such as warfarin (Coumadin); antihistamines; carbamazepine (Tegretol); clonazepam (Klonopin); disulfiram (Antabuse); felodipine (Plendil); fenoprofen (Nalfon); MAO inhibitors [phenelzine (Nardil) or tranylcypromine (Parnate)]; medication for depression, seizures, pain, asthma, colds, or allergies; metoprolol (Lopressor, Toprol XL); metronidazole (Flagyl); muscle relaxants; phenylbutazone (Azolid, Butazolidin); propranolol (Inderal); rifampin (Rifadin); sedatives; sleeping pills; steroids; theophylline (Theo-Dur); tranquilizers; valproic acid (Depakene); verapamil (Calan); and vitamins. These medications may add to the drowsiness caused by amobarbital.
- tell your doctor if you have or have ever had anemia; seizures; or lung, heart, or liver disease.
- amobarbital can decrease the effectiveness of oral contraceptives. Use a different method of birth control while taking this medication.
- tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking amobarbital, call your doctor immediately.
- if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking amobarbital.
- you should know that this drug may make you drowsy. Do not drive a car or operate machinery until you know how this drug affects you.
- remember that alcohol can add to the drowsiness caused by this drug.
What to do if you forget a dose
Do not take the missed dose when you remember it. Skip it completely; then take the next dose at the regularly scheduled time. Do not take a double dose to make up for a missed one.
Side Effects
Minor Side Effects
Side effects from amobarbital are common and include:
- drowsiness
- headache
- dizziness
- depression
- excitement (especially in children)
- upset stomach
- vomiting
Tell your doctor if any of these symptoms are severe or do not go away:
- nightmares
- increased dreaming
- constipation
- joint or muscle pain
Severe Side Effects
If you experience any of the following symptoms, call your doctor immediately:
- mouth sores
- sore throat
- easy bruising
- bloody nose
- unusual bleeding
- fever
- difficulty breathing or swallowing
- severe skin rash
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/MedWatch/report.htm] or by phone [1-800-332-1088].
Storage conditions needed for this medication
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of emergency/overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Other information
Keep all appointments with your doctor.
Do not let anyone else take your medication.
Brand names
- Amytal® Sodium
Brand names of combination products
- Tuinal® 100 mg Pulvules® containing Amobarbital Sodium and Secobarbital Sodium
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
