ModerateCaution
Ginkgo Biloba
Ginkgo has seizure case reports and is undesirable in patients taking antiseizure medication.
Recommendation: Avoid ginkgo in patients with epilepsy unless the neurologist approves.
Oxcarbazepine
Prescription ·Strong evidence ·Reviewed May 2026
Oxcarbazepine is an anticonvulsant used for focal seizures and sometimes off-label for mood stabilization. Its most clinically important nutrition-adjacent safety issue is hyponatremia, which can be symptomatic and severe. It also induces CYP3A4 and UGT pathways enough to reduce exposure to some drugs, including hormonal contraceptives.
What it's good for
The bottom line
Evidence rating strong. Most-documented uses: monotherapy or adjunctive treatment of focal-onset seizures, reduction in seizure frequency, off-label specialist use in selected bipolar-spectrum patients. 3 sources indexed (2013–2026), with 4 interaction records on file.
The science
How it works, mechanistically.
Core mechanism
Oxcarbazepine is rapidly converted to the active monohydroxy derivative, which stabilizes hyperexcited neuronal membranes mainly by blocking voltage-sensitive sodium channels. This reduces repetitive neuronal firing and synaptic seizure propagation. The drug can promote inappropriate antidiuretic hormone physiology or renal water retention, leading to dilutional hyponatremia, and it can induce CYP3A4/5 and UGT enzymes while inhibiting CYP2C19.1,2
Class
Anticonvulsant sodium-channel modulator
Dosing
Dosing & protocol.
Common range
Immediate-release adult seizure dosing often starts at 300 mg twice daily and titrates to 600 mg twice daily; some patients require up to 1200 mg twice daily. Extended-release dosing is typically once daily and individualized.
Recommended form
Immediate-release tablet or suspension, or extended-release tablet depending on indication and tolerability
Immediate-release oxcarbazepine may be taken with or without food. Extended-release products should be taken consistently as labeled, often on an empty stomach for Oxtellar XR.
Depletions
What it depletes.
Nutrients this medication can lower over time, and what to replace.
Sodium
SignificantOxcarbazepine can cause dilutional hyponatremia through antidiuretic hormone-like effects and impaired free-water handling, lowering serum sodium rather than depleting total body sodium in many cases.
Replace Medical sodium correction or fluid management only under clinician supervisionMonitor Serum sodiumOnset Often within the first 3 months, but can occur later during maintenance therapy
Safety
Full safety detail.
Side effects
- Dizziness
- Somnolence
- Diplopia
- Ataxia
- Nausea or vomiting
- Hyponatremia
- Headache
- Serious skin reactions including Stevens-Johnson syndrome or toxic epidermal necrolysis
- Drug reaction with eosinophilia and systemic symptoms
- Suicidal thoughts or behavior warning for antiepileptic drugs
Interactions
Interaction records.
ModerateCaution
Melatonin
Melatonin may add to oxcarbazepine-related dizziness and somnolence.
Recommendation: Use cautiously and monitor for falls or next-day impairment.
ModerateCaution
Ashwagandha
Ashwagandha may cause sedation and could add to oxcarbazepine CNS effects.
Recommendation: Use cautiously, especially during dose changes or if dizziness is present.
ModerateCaution
St. John's Wort
St. John's Wort is an inducer of CYP3A4 and P-glycoprotein. Oxcarbazepine also induces CYP3A4, so the combination can amplify interaction burden for other medications.
Recommendation: Avoid unless the clinician has reviewed all medications, especially hormonal contraceptives, anticoagulants, immunosuppressants, and psychiatric drugs.
Sources
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Reviews & position papers
2- 1OxcarbazepineNeeds reviewURLStatPearls Publishing · NCBI Bookshelf · 2025
Review emphasizes severe hyponatremia risk and relevant contraindication/caution populations.
- 2Evidence-based guideline update: efficacy and tolerability of the new antiepileptic drugs II: treatment-resistant epilepsyNeeds reviewNo linkGlauser T et al. · Neurology · 2013
Guideline review supports oxcarbazepine efficacy in focal seizure treatment while noting tolerability limitations.
Reference material
1- 3OXCARBAZEPINE tablets, US Prescribing InformationNeeds reviewURLU.S. National Library of Medicine · DailyMed · 2026
Labeling describes recommended seizure dosing, renal adjustment, hyponatremia warning, skin reactions, and enzyme-induction interactions.
Keep exploring
Deep dives & adjacent profiles.
This page is educational. Do not start, stop, or change a supplement or medication based on it without checking with a qualified healthcare professional.
Use this with your stack
Oxcarbazepine in NutriStack.
Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.