Drug Index



Mechanism :

It is a precursor of phenobarbitone and is used as an antiepileptic agent. It is a GABAergic agent. It is used in the treatment of generalized and partial tonic clonic seizures.

Indication :

• Seizure disorder (generalized tonic clonic seizures, complex partial, simple partial seizures)

Contraindications :

Hypersensitivity to drug/class/component, Porphyria, Avoid abrupt withdrawal.

Dosing :

Neonates: 12-20 mg/kg/day PO divided bid-qid. Start with low dose and increase gradually.

<8 years: 10-25 mg/kg/day PO divided tid-qid. (Max: 2 g/day) Start with low dose and increase gradually.

>8 years: 250 mg PO tid-qid. (Max: 2 g/day) Start with low dose and increase gradually.

Adverse Effect :

Respiratory depression, hypotension, paradoxical excitement, hepatitis, mental confusion and impaired performance, hypersensitivity and severe hematological reaction. It is contraindicated in children with porphyria.

Interaction :

Ethosuximide, Valproic Acid, Griseofulvin: It may decrease levels serum concentrations.
phenytoin: May decrease primidone serum concentrations.

03/11/2020 00:36:03 Primidone
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