ethinyl estradiol/etonogestrel vs lamotrigine
Side-by-side comparison of ethinyl estradiol/etonogestrel and lamotrigine. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
A significant decrease in the plasma concentrations of lamotrigine has been shown, likely due to induction of lamotrigine glucuronidation. This may reduce seizure control; therefore, dosage adjustments of lamotrigine may be necessary.
Recommendation: Your doctor may need to increase your dose of lamotrigine to make sure it still prevents seizures.
NuvaRing
Lamictal
NuvaRing is a vaginal ring that contains hormones to prevent pregnancy. It releases hormones over three weeks to stop you from getting pregnant.
Lamotrigine is a medicine that can treat seizures and bipolar disorder. It works by reducing irregular electrical activity in the brain.
NuvaRing is used by women of reproductive age to prevent pregnancy. It contains estrogen and progestin, which are hormones. These hormones prevent ovulation, so you don't release an egg and can't get pregnant.
Lamotrigine can treat epilepsy in adults and children 2 years and older. It can help with partial-onset seizures, primary generalized tonic-clonic seizures, and generalized seizures of Lennox-Gastaut syndrome. It can also be used to delay mood episodes in adults with bipolar I disorder.
NuvaRing contains two hormones: etonogestrel and ethinyl estradiol. These hormones are released slowly into your body. They prevent pregnancy mainly by stopping your ovaries from releasing an egg.
Lamotrigine affects how nerves in the brain send signals to each other. It is thought to work by decreasing the release of certain chemicals. This helps to stabilize electrical activity and prevent seizures or mood swings.
- • Vaginal infection
- • Headache (including migraine)
- • Mood changes (like depression or mood swings)
- • Problems related to the ring (like it falling out or causing discomfort)
- • Nausea or vomiting
- • Dizziness
- • Headache
- • Double vision
- • Uncoordinated movements
- • Nausea
No adverse event reports.
- Skin rash 8,408
- Seizure 6,527
- Feeling sick to your stomach 6,151
- Tiredness 5,914
- Feeling lightheaded 5,771
Cigarette smoking increases your risk of serious heart problems if you use hormonal birth control like NuvaRing. This risk is higher if you are over 35 and smoke more cigarettes. If you are over 35 and smoke, you should not use NuvaRing.
Lamotrigine can cause a serious skin rash that may require you to go to the hospital. This rash can be life-threatening. The risk is higher in children. Stop taking lamotrigine and see a doctor right away if you get a rash, fever, or swollen lymph nodes.
Do not use NuvaRing if you are pregnant. NuvaRing can pass into breast milk and may reduce milk production. Talk to your doctor about other birth control options if you are breastfeeding.
Tell your doctor if you are pregnant or plan to become pregnant. Lamotrigine may cause harm to an unborn baby. There is a pregnancy registry for women who take lamotrigine during pregnancy. You can enroll by calling 1-888-233-2334.
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How to Read This ethinyl estradiol/etonogestrel vs lamotrigine Comparison
ethinyl estradiol/etonogestrel is classified in the Vaginal Contraceptive Ring drug class, while lamotrigine sits within the Anticonvulsant class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, ethinyl estradiol/etonogestrel has 0 submissions while lamotrigine has 32,771. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to the birth control ring causes your body to process and remove the seizure medicine more quickly.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between ethinyl estradiol/etonogestrel and lamotrigine - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.