Drug Class: Skeletal muscle relaxants
Active Ingredient: Baclofen
Generic Name: Baclofen
Brand Name: Lioresal® (and multiple generic brands worldwide)
Company: Originally marketed by Ciba-Geigy (now part of Novartis); currently manufactured by multiple international generic pharmaceutical companies
Dosage Form:
Chemical description: Baclofen is a gamma-aminobutyric acid (GABA) derivative with the molecular formula C₁₀H₁₂ClNO₂.
Pharmacological description: Baclofen is a selective GABA-B receptor agonist that inhibits excitatory neurotransmitter release in the spinal cord, leading to reduced muscle spasticity, decreased muscle tone, and relief of painful muscle spasms.
Drug Form: Tablet
Tablet Color: White
Tablet Shape: Round
Scored Shape: Not scored
Tablet Description: Chemical description: Baclofen is a gamma-aminobutyric acid (GABA) derivative with the molecular formula C₁₀H₁₂ClNO₂. Pharmacological description: Baclofen is a selective GABA-B receptor agonist that inhibits excitatory neurotransmitter release in the spinal cord, leading to reduced muscle spasticity, decreased muscle tone, and relief of painful muscle spasms.
What is baclofen?
Baclofen belongs to a class of medications called skeletal muscle relaxants. Baclofen is an antispasmodic agent that acts on spinal cord nerves and decreases the number and severity of muscle spasms in patients with certain conditions affecting the spinal cord.
Baclofen is used in adults and children at least 12 years old to treat certain types of spasticity (muscle stiffness and tightness) and muscle pain in people with multiple sclerosis or a spinal cord injury or other spinal cord diseases.
Baclofen relieves pain and improves muscle movement.
Warnings
Do not use baclofen at a time when you need muscle tone for safe balance and movement during certain activities. Baclofen may make you drowsy. Do not drive or operate heavy machinery until you know how this medicine affects you.
Do not stop using this medicine suddenly, or you could have unpleasant withdrawal symptoms.
Ask your doctor about the safe use of alcoholic beverages while you are taking baclofen. Alcohol can make the side effects from baclofen worse.
Before taking this medicine
You should not use this medicine if you are allergic to baclofen.
To make sure this medicine is safe for you, tell your doctor if you have ever had:
- mental illness or psychosis;
- epilepsy or other seizure disorder;
- problems with balance;
- cerebral palsy;
- Parkinson’s disease;
- schizophrenia or a confused state;
- high blood pressure, or fast heart rate;
- a rheumatic disease;
- a stroke or blood clot; or
- kidney disease.
Using baclofen may increase your risk of developing an ovarian cyst. Talk with your doctor about your own risk.
Tell your doctor if you are pregnant or plan to become pregnant, or breastfeeding or plan to breastfeed. If you take baclofen while pregnant or breastfeeding, withdrawal symptoms such as tremors, stiff muscles, or seizure may occur in the baby.
How should I take baclofen?
Take baclofen exactly as prescribed by your doctor. Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose.
Shake the oral suspension (liquid).
Measure a dose with the supplied measuring device (not a kitchen spoon).
Shake and pour the entire oral granules packet to dissolve in your mouth or swallow whole at once, with or without liquids.
You may also mix the granules with liquids (milk, or apple juice) or soft food (apple sauce, yogurt, or pudding).
The oral granules can also be given through a feeding tube. Ask your doctor or pharmacist if you do not understand these instructions.
Call your doctor if your symptoms do not improve, or if they get worse.
You may have withdrawal symptoms if you stop using baclofen suddenly. Ask your doctor before stopping the medicine.
Store the oral suspension (liquid) at room temperature away from moisture and heat. Throw Fleqsuvy away after 2 months of first opening.
Store Ozobax in the refrigerator, do not freeze.
Dosing information
Usual Adult Dose for Spasticity:
Oral:
-Initial dose: The following gradually increasing dosage regimen is suggested, but should be adjusted to suit individual patient requirements: 5 mg orally 3 times a day for 3 days, then 10 mg orally 3 times a day for 3 days, then 15 mg orally 3 times a day for 3 days, then 20 mg orally 3 times a day for 3 days
-Maintenance dose: Should be individualized.
-Maximum dose: 80 mg/day (20 mg orally 4 times a day).
Usual Pediatric Dose for Spasticity:
12 years and older:
Oral:
-Initial dose: The following gradually increasing dosage regimen is suggested, but should be adjusted to suit individual patient requirements: 5 mg orally 3 times a day for 3 days, then 10 mg orally 3 times a day for 3 days, then 15 mg orally 3 times a day for 3 days, then 20 mg orally 3 times a day for 3 days
-Maintenance dose: Should be individualized.
-Maximum dose: 80 mg/day (20 mg orally 4 times a day)
Comments:
-The lowest dose compatible with an optimal response is recommended.
-Slowly withdraw therapy if benefits are not evident after a reasonable period.
What happens if I miss a dose?
Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line .
Overdose symptoms may include increasing drowsiness, dizziness, sleepiness, trouble focusing on objects, shallow breathing, seizure, or muscle weakness leading to loss of consciousness.
What should I avoid while taking baclofen?
Avoid drinking alcohol.
Avoid driving or hazardous activity until you know how baclofen will affect you. Your reactions could be impaired.
Do not share this medicine with another person, even if they have the same symptoms you have.
Baclofen side effects
Get emergency medical help if you have signs of an allergic reaction to baclofen: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Baclofen may cause serious side effects. Call your doctor at once if you have:
- severe drowsiness, breathing problems;
- confusion, hallucinations;
- muscle weakness, itching, tingling, or twitching in your hands, arms, feet, or legs; or
- fever.





