Levetiracetam

Examples
Levetiracetam
Indications
Monotherapy or adjunct treatment for focal seizure which may then generalise. It is quite commonly used due to its relatively good side effect profile and efficacy.
Contraindications
Contraindications Caution
Mechanism
Levetiracetam was accidentally discovered to have antiepileptic properties and is an analogue of Piracetam (occasionally used for the treatment of cortical myoclonus). It is an effective anticonvulant but little is known about its mode of action - it does not increase GABA in the brain or have an effect of ion channels. It does appear to bind to a synaptic vesicle protein SV2A which may impede nerve conduction across synapses.
Administration
Oral or IV.
Adverse Reactions
However, it is generally a well tolerated medication.
Interactions
Case reports describe reduced methotrexate clearance when administered with levetiracetam, resulting in methotrexate toxicity. Therefore regular full blood counts are recommended if using these medicines together.
Education
Only withdraw Levetiracetam under a doctor's supervision.
Pharmacokinetics
Nil relevant.