What is phenobarbital used for?
Phenobarbital is commonly used as a sedative (to cause drowsiness) or to control certain types of seizures.
Phenobarbital may also be used for other conditions as determined by your healthcare provider.
How does phenobarbital work (mechanism of action)?
Phenobarbital may work by mimicking a natural chemical in your brain called GABA, which helps calm brain activity. This reduces seizures and makes you feel sleepy.
How is phenobarbital supplied (dosage forms)?
Phenobarbital is available in the following dosage forms that are taken by mouth.
- 20 mg/5 mL oral elixir
- 15 mg, 16.2 mg, 30 mg, 32.4 mg, 60 mg, 64.8 mg, 97.2 mg, 100 mg oral tablets
Phenobarbital is also available in injectable forms.
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