Resistant partial epilepsy (focal onset seizures)

Active Ingredient: Vigabatrin

Indication for Vigabatrin

Population group: only adults (18 years old or older)

Vigabatrin is indicated in infants and children from 1 month to less than 7 years of age for treatment in combination with other antiepileptic medicinal products for patients with resistant partial epilepsy (focal onset seizures) with or without secondary generalisation, that is where all other appropriate medicinal product combinations have proved inadequate or have not been tolerated.

For this indication, competent medicine agencies globally authorize below treatments:

1-3 g in 2 divided doses daily

Route of admnistration

Oral

Defined daily dose

1 - 3 g

Dosage regimen

From 0.5 To 1.5 g 2 time(s) per day every day

Loading dose

1 g

Detailed description

Maximal efficacy is usually seen in the 2-3g/day range. A starting dose of 1g daily should be added to the patient’s current antiepileptic medicinal product regimen. The daily dose should then be titrated in 0.5g increments at weekly intervals depending on clinical response and tolerability. The highest recommended dose is 3g/day.

No direct correlation exists between the plasma concentration and the efficacy. The duration of the effect of the medicinal product is dependent on the rate of GABA transaminase resynthesis rather than the concentration of the drug in the plasma.

Dosage considerations

Vigabatrin is for oral or gastric use and may be taken before or after meals. Gastric administration should be used for children who cannot swallow, but can be fed by enteral route.

Active ingredient

Vigabatrin

Vigabatrin is a selective irreversible inhibitor of GABA transaminase, the enzyme responsible for the breakdown of GABA (gamma aminobutyric acid). Vigabatrin increases the concentration of GABA, the major inhibitory neurotransmitter in the brain.

Read more about Vigabatrin

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