Felbatol

(felbamate)

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Controls seizures.

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Our bottom line

Felbatol (felbamate) controls seizures, but it can have bad side effects.

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    $1617.28
Quick facts about felbamate
  • Drug class: Neuro/psych
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (felbamate)

Upsides

  • Felbatol (felbamate) can be used by itself or with other medicines to control seizures.
  • Felbatol (felbamate) is available in generic and in both a pill and a liquid form.
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What to expect from felbamate, on one page

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Downsides

  • Can harm your spleen and liver.
  • Consider only if other anti-seizure medicines have not worked well.
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What to expect from felbamate, on one page

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How it works

Felbatol (felbamate) is a carbamate, which blocks signals in the brain that causes seizures.

Quick facts about felbamate
  • Drug class: Neuro/psych
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (felbamate)

Used for

Dosage forms

  • Pill
  • Liquid
Tried felbamate? Write a review!

Prices and coupons

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What to expect when you take Felbatol (felbamate) for Lennox-Gastaut disease

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  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Effectiveness
  • Starts to kick in
    Full effects
  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Possible side effects
  • Blood diseases
  • Liver damage
  • Suicidal behavior
  • Headache
  • Problems with appetite
  • Upper respiratory infection
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Side effect rates for Felbatol (felbamate)

From 157 clinical trials of felbamate when taken for lennox-gastaut syndrome
  • Loss of appetite
    55%55%
    15%15%
  • Sleepiness
    48%48%
    11%11%
  • Common cold or flu
    45%45%
    26%26%
  • Vomiting
    39%39%
    15%15%
  • Headache
    37%37%
    9%9%
  • Nausea
    34%34%
    2%2%
  • Fever
    23%23%
    11%11%
  • Sleepiness
    19%19%
    7%7%
  • Loss of appetite
    19%19%
    2%2%
  • Dizziness
    18%18%
    14%14%
  • Insomnia
    18%18%
    7%7%
  • Fatigue
    17%17%
    7%7%
  • Vomiting
    17%17%
    5%5%
  • Insomnia
    16%16%
    15%15%
  • Nervousness
    16%16%
    19%19%
  • Constipation
    13%13%
  • Purple skin spots
    13%13%
    7%7%
  • Indigestion
    12%12%
    7%7%
  • Constipation
    11%11%
    2%2%
  • Fatigue
    10%10%
    4%4%
  • Difficulty walking
    10%10%
  • Rash
    10%10%
    7%7%
  • Hiccups
    10%10%
    4%4%
  • Sore throat
    10%10%
    4%4%
  • Ear infection
    10%10%
  • Nervousness
    7%7%
    2%2%
  • Weight loss
    7%7%
  • Pain
    7%7%
  • Headache
    7%7%
    19%19%
  • Unusual thoughts
    7%7%
    4%4%
  • Difficulty controlling movements
    7%7%
    4%4%
  • Loss of bladder control
    7%7%
    7%7%
  • Mood swings
    7%7%
  • Vision changes
    7%7%
  • Nausea
    7%7%
  • Indigestion
    7%7%
    4%4%
  • Low white blood cells
    7%7%
  • Coughing
    7%7%
  • Tremor
    6%6%
    2%2%
  • Double vision
    6%6%
  • Changes in taste
    6%6%
  • Anxiety
    5%5%
    5%5%
  • Walking problems
    5%5%
  • Depression
    5%5%
  • Diarrhea
    5%5%
    2%2%
  • Abdominal pain
    5%5%
  • Flu and common cold
    5%5%
    7%7%
  • Changes in vision
    5%5%
    2%2%
  • Tingling or prickling sensation
    4%4%
    2%2%
  • Difficulty controlling movements
    4%4%
  • Rash
    4%4%
    5%5%
  • Abnormal liver tests
    4%4%
  • Sinus infection
    4%4%
  • Fever
    3%3%
    5%5%
  • Chest pain
    3%3%
  • Dry mouth
    3%3%
  • Loss of consciousness
    3%3%
  • Muscle pain
    3%3%
  • Sore throat
    3%3%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of felbamate.

Felbatol (felbamate)
Placebo

People taking felbamate felt side effect more

People taking felbamate felt side effect less

No difference

Risks and Warnings for Felbatol (felbamate)

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  • People on Felbatol (felbamate) have had a very rare but serious blood disease, aplastic anemia, which can be fatal. You are more likely to get serious infections or bleeding. Your doctor will talk to you to make sure you understand the risks before you start.

    This is a black box warning. The FDA requires this warning when there is a significant risk of serious or life-threatening effects that anyone taking the drug should consider.

Means that some groups have a high risk of experiencing this side effect

Common concerns from people taking Felbatol (felbamate)

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Pregnancy

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

Tip: Always talk with your doctor before you take any medication while pregnant.
FDA pregnancy category for felbamate
CWeigh risks vs. benefits
Kidneys and liver
  • Can damage your liver or your spleen
Sleep
  • Felbatol (felbamate) can make you feel sleepy the first few days that you take it. Don't drive or do anything that requires concentration until you know how your body reacts to Felbatol (felbamate). If these changes bother you, talk to your doctor.