Mebaral: Uses, Side Effects, Dosage & More

Introduction to Mebaral (Mephobarbital)

Mebaral, also known as mephobarbital, is a barbiturate medication used as a sedative to treat anxiety, tension, apprehension, and feelings of uneasiness. It works by depressing the activity of the brain and central nervous system. Mebaral is a controlled substance and available only by prescription due to its potential for abuse, addiction, and dependence.

Chemical Composition

Mebaral contains the active ingredient mephobarbital, which is a barbiturate. Mephobarbital is metabolized in the body to phenobarbital, another barbiturate commonly used for seizure control. The chemical structure of mephobarbital allows it to cross the blood-brain barrier and act on the central nervous system ^{Mephobarbital” target=”_blank”>[1]} .

Mechanism of Action

Mebaral works by binding to GABA receptors in the brain, enhancing the effects of the neurotransmitter GABA. This leads to increased inhibition of neuron activity, resulting in sedation, anxiolysis, and anticonvulsant effects. The exact mechanism by which Mebaral exerts its therapeutic effects is not fully understood ^[2] .

Clinical Uses

Mebaral is primarily used for the treatment of anxiety disorders, including generalized anxiety disorder and panic disorder. It may also be prescribed for short-term management of insomnia. In some cases, Mebaral is used as an anticonvulsant for the treatment of seizures, particularly in patients who have not responded to other treatments ^[3] .

Dosage Guidelines

The dosage of Mebaral varies depending on the condition being treated and individual patient factors. Typical adult doses range from 32-100 mg three to four times daily. Dose adjustments may be necessary for patients with liver or kidney impairment. It is important to follow the prescribed dosage and not exceed the recommended dose to avoid adverse effects and potential overdose ^[4] .

Mebaral Formulations

Mebaral is available as a 32 mg tablet for oral administration. It should be taken by mouth with water as directed by a healthcare provider. Mebaral may also be available in other strengths and formulations in some countries ^[5] .

Side Effects

Common side effects of Mebaral include drowsiness, dizziness, memory problems, confusion, lightheadedness, nausea, vomiting, constipation, and headache. More severe side effects may include respiratory depression, allergic reactions, muscle twitching, restlessness, and behavioral changes. Long-term use of Mebaral can lead to physical dependence and withdrawal symptoms upon discontinuation ^[6] .

Drug Interactions

Mebaral may interact with other medications, including opioids, antihistamines, and antidepressants. Concomitant use with alcohol or other central nervous system depressants can lead to enhanced sedation and respiratory depression. Patients should inform their doctor of all medications they are taking before starting Mebaral ^[7] .

Warnings and Precautions

Mebaral should be used with caution in patients with a history of substance abuse, liver or kidney disease, and respiratory disorders. It may cause impairment in thinking and reaction time, so patients should avoid driving or operating machinery while taking Mebaral. Abrupt discontinuation can lead to withdrawal symptoms, so dosage should be gradually tapered under medical supervision ^[8] .

Abuse and Addiction Potential

Mebaral has a high potential for abuse and addiction due to its sedative and euphoric effects. Long-term use can lead to physical dependence and withdrawal symptoms upon discontinuation. Patients with a history of substance abuse should be closely monitored while taking Mebaral. Signs of Mebaral abuse include taking higher doses than prescribed, seeking early refills, and engaging in drug-seeking behavior ^[2] .

Mebaral as an Anticonvulsant

Mebaral has been used as an anticonvulsant for the treatment of seizures, particularly in patients who have not responded to other treatments. Its efficacy as an anticonvulsant is due to its ability to enhance GABA activity in the brain, which helps to suppress seizure activity. However, Mebaral is not a first-line treatment for seizures and is typically only used when other medications have failed ^[9] .

Consumer Information

Patients should take Mebaral exactly as prescribed by their healthcare provider. They should not increase the dose or take it more frequently than directed. If a dose is missed, it should be taken as soon as remembered unless it is close to the time for the next dose. Patients should not stop taking Mebaral abruptly without consulting their doctor, as this can lead to withdrawal symptoms. Regular checkups and blood tests may be necessary to monitor for side effects and adjust dosage ^[10] .

Legal and Regulatory Status

Mebaral is a controlled substance in the United States and many other countries due to its potential for abuse and addiction. It is classified as a Schedule IV drug under the Controlled Substances Act, meaning it has a lower potential for abuse than Schedule III drugs but still requires a prescription from a licensed healthcare provider. Prescriptions for Mebaral may have quantity limits and are not eligible for refills without a new prescription ^[11] .

Brand Names and Synonyms

Mebaral is the most common brand name for mephobarbital in the United States. In other countries, it may be sold under different brand names such as Mephyltaletten. Mephobarbital is the generic name for the drug, and it may also be referred to as methylphenobarbitone or methylphenobarbital ^{Mephobarbital” target=”_blank”>[1]} .

Further Reading and Resources

For more information on Mebaral and its uses, side effects, and precautions, the following resources may be helpful:

• Mephobarbital – National Center for Biotechnology Information
• Mebaral – Drugs.com
• Mebaral Prescribing Information – FDA

Mebaral in Veterinary Medicine

Mebaral is occasionally used in veterinary medicine as a sedative and anticonvulsant for dogs and cats. However, its use in animals is limited due to the availability of safer and more effective alternatives. The dosage and administration of Mebaral in animals should only be determined by a licensed veterinarian ^[12] .