Recommended Topic Related To:


"About 1 out of 10 people has had a seizure. Do you know what to do if someone has a seizure near you? Read below to learn more.

About 1 out of 10 people has had a seizure. That means seizures are common, and one day you might need to help s"...


(mephobarbital) Tablets, USP



Mephobarbital, 5-Ethyl-1-methyl-5-phenylbarbituric acid, is a babiturate with sedative, hypnotic, and anticonvulsant properties. It occurs as a white, nearly odorless, tasteless powder and is slightly soluble in water and in alcohol.

MEBARAL (mephobarbital) is available as tablets for oral administration. The structural formula is:

MEBARAL (mephobarbital) Structural Formula Illustration

Inactive Ingredients: Lactose, Starch, Stearic Acid, Talc.

What are the possible side effects of mephobarbital (Mebaral)?

Get emergency medical help if you have any of these signs of an allergic reaction: 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:

  • confusion, hallucinations;
  • slow heart rate; or
  • feeling like you might pass out.

Less serious side effects may include:

  • dizziness;
  • memory or thinking problems;
  • feeling nervous or agitated;
  • nausea, vomiting; or
  • headache.

This is not a complete list of side...

Read All Potential Side Effects and See Pictures of Mebaral »

What are the precautions when taking mephobarbital (Mebaral)?

Before taking mephobarbital, tell your doctor or pharmacist if you are allergic to it; or to other barbiturates (e.g., phenobarbital); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: a certain blood disorder (porphyria), severe liver disease.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver problems, severe breathing problems (e.g., respiratory depression), kidney problems, heart problems, myasthenia gravis, long-term severe...

Read All Potential Precautions of Mebaral »

Last reviewed on RxList: 11/17/2008
This monograph has been modified to include the generic and brand name in many instances.


Mebaral - User Reviews

Mebaral User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Mebaral sorted by most helpful. Patient Discussions FAQs

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.


Find tips and treatments to control seizures.

Use Pill Finder Find it Now See Interactions

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies

Interaction Checker

  • Check potential drug interactions
Search the Medical Dictionary for Health Definitions & Medical Abbreviations