SABRIL TABLETS Rx

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SABRIL TABLETS

Seizure disorders
Only 4 drugs may be compared at once

Generic Name and Formulations:

Vigabatrin 500mg; tabs.

Company:

Lundbeck Inc.

Select therapeutic use:

Indications for SABRIL TABLETS:

Adjunctive therapy in patients ≥10yrs of age with refractory complex partial seizures (CPS) who have inadequately responded to several alternative treatments and for whom the potential benefits outweigh the risk of vision loss. Not a first line agent for CPS.

Adult:

≥17yrs: initially 500mg twice daily; may be increased weekly by 500mg/day to maintenance 1.5g twice daily. CrCl >50–80mL/min: reduce dose by 25%; CrCl >30–50mL/min: reduce dose by 50%; CrCl >10–30mL/min: reduce dose by 75%. Reevaluate periodically. Withdraw gradually (reduce by 1g/day at weekly intervals).

Children:

<10yrs: not established. 10–16yrs: 25–60kg: initially 250mg twice daily; may be increased weekly by 500mg/day to maintenance 1g twice daily. >60kg: use adult dosing. CrCl >50–80mL/min: reduce dose by 25%; CrCl >30–50mL/min: reduce dose by 50%; CrCl >10–30mL/min: reduce dose by 75%. Reevaluate periodically. Withdraw gradually (reduce daily dose by ⅓ per week for 3 weeks).

Warnings/Precautions:

Monitor vision, including visual acuity and dilated indirect ophthalmoscopy, and visual fields, at baseline (within 4 weeks) and every 3 months, and for 3–6 months after discontinuing; risk of vision loss increases as dose and cumulative exposure increased. Discontinue if no substantial benefit after treating for 3 months (in adults) or 2–4 weeks (in infants); sooner if obvious treatment failure. Increased risk of suicidal thoughts and behavior; monitor for depression, suicidal ideation, unusual changes in mood/behavior. MRI abnormalities in infants. Renal impairment. Avoid abrupt cessation. Elderly. Pregnancy (Cat.C). Nursing mothers: not recommended.

Interactions:

May antagonize phenytoin. May potentiate clonazepam. Avoid others that can cause visual or ophthalmic dysfunction. Suppresses ALT/AST activity. May cause false (+) amino acid test.

See Also:

SABRIL for ORAL SOLUTION

Pharmacological Class:

Antiepileptic.

Adverse Reactions:

RCPS: vision loss (may be severe and permanent), other visual changes (blurring, diplopia, asthenopia), fatigue, somnolence, nystagmus, tremor, memory impairment, weight gain, arthralgia, abnormal coordination, confusion, upper respiratory infection, aggression; headache, dizziness, anemia, peripheral neuropathy, edema. IS: bronchitis, ear infection, acute otitis media.

Note:

Available only through restricted distribution program. To register call (888) 45-SHARE. Encourage pregnant patients exposed to vigabatrin to call (888) 233-2334. To report ADRs: (800) 455-1141.

REMS:

YES

How Supplied:

Tabs—100; Pwd packets—50