Neuro Drugs 1 - Epilepsy Drugs Flashcards
Clinical use: Tiagabine
Focal
Mechanism: Phenobarbital
Facilitate GABAA action by increasing duration of Cl- channel opening, thus decreasing neuron diring
Mechanism: Vigabatrin
Increase GABA by irreversibly inhibiting GABA transaminase
Clinical use: BDZs
Diazepam
Lorazepam
Midazolam
Status epilepticus (1st line for acute)
Eclampsia seizures (2nd line; 1st line is magnesium sulfate)
Clinical use: Topiramate
Focal
Tonic-clonic
Migraine prophylaxis
Adverse effects: Phenobarbital
- Sedation
- Tolerance
- Dependence
- Cardiorespiratory depression
- P-450 induction
Clinical use: Levatiracetam
Focal
Tonic-clonic
Mechanism: Lamotrigine
Blocks voltage-gated Na+ channels
Inhibits release of glutamate
Adverse effects: Phenytoin, Fosphenytoin
- Neuro: Nystagmus, diplopia, ataxia, sedation, peripheral neuropathy
- Hirsutism
- Stevens-Johnson syndrome
- Gingival hyperplasia
- DRESS syndrome
- MSK: Osteopenia, SLE-like syndrome
- Heme: Megaloblastic anemia
- Teratogen (fetal hydantoin syndrome)
- P-450 induction
Clinical use: Lamotrigine
Focal
Tonic-clonic
Absence
Clinical use: Gabapentin
Focal
Peripheral neuropathy (e.g., DM)
Postherpatic neuralgia
Adverse effects: Lamotrigine
- Stevens-Johnson syndrome (must titrate slowly)
Adverse effects: BDZs
Diazepam
Lorazepam
Midazolam
- Sedation
- Tolerance
- Dependence
- Respiratory depression
Clinical use: Valproic acid
Focal
Tonic-clonic (1st line; phenytoin also 1st line)
Absence (combo tonic-clonic + absence)
Myoclonic seizures
Bipolar disorder
Migraine prophylaxis
Clinical use: Carbamazepine
Focal (1st line)
Tonic-clonic
Trigeminal neuralgia (1st line)