Carbamazepine Flashcards
Carbamazepine
Brand Names
Tegretol
Tegretol XR
Carbatrol
Epitol
Equetro
Carbamazepine
Formulations
ER capsule: 100mg, 200mg, 300mg
Oral suspension: 100mg/5mL
Tablet: 200mg
Chewable tablet: 100mg
XR tablet: 100mg, 200mg, 400mg
Carbamazepine
On-Label Indications
Bipolar disorder:
Acute hypomania, acute mild-moderate mania
Seizures
Neuropathic pain
Carbamazepine
Off-Label Indications
Bipolar depression
Bipolar maintenance
Carbamazepine
MOA
Antiepileptic
Blocks VSSCs
Carbamazepine
CYP450 Pathway
CYP3A4
Carbamazepine
Dose Range (Adult)
400-1200mg/day in 2-4 divided doses
Carbamazepine
Titration
Start 100-400mg/day
IR: 2-4 divided doses
ER: BID
Incr by 200mg/day Q4d
Maximum dose: 1600mg/day
Carbamazepine
Dosing (Elderly)
Same as adult
Carbamazepine
Dosing (Liver Impairment)
No dosage adjustments
Carbamazepine
Dosing (Kidney Impairment)
Adjust based on pt response, tolerability, and serum levels
Carbamazepine
OB Considerations
Reduces effectiveness of contraceptives, backup method
Teratogenic, contraindicated in pregnancy
Not recommended for breastfeeding
Carbamazepine
Side Effects
Bone marrow suppression (anemia, thrombocytopenia, etc.)
Increased risk heart failure, tachycardia
Hepatotoxicity
Carbamazepine
Contraindications
TCA cross-sensitivity
Pregnancy
Liver disease
Carbamazepine
Interactions
MAOIs - 14 day washout period
“Interacts with everything”
Check with pharmacist when prescribing, avoid polypharmacy