ethinyl estradiol/etonogestrel vs topiramate
Side-by-side comparison of ethinyl estradiol/etonogestrel and topiramate. 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
Some drugs or herbal products that may decrease the effectiveness of hormonal contraceptives include: phenytoin, barbiturates, carbamazepine, bosentan, felbamate, griseofulvin, oxcarbazepine, rifampicin, topiramate, rifabutin, rufinamide, aprepitant, and products containing St.
Recommendation: You should use a backup method of birth control, such as condoms, while taking this medication.
NuvaRing
Topamax
NuvaRing is a vaginal ring that contains hormones to prevent pregnancy. It releases hormones over three weeks to stop you from getting pregnant.
Topiramate is a medicine that can help prevent seizures and migraines. It works by calming 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.
Topiramate can be used alone or with other medicines to treat certain types of seizures in people 2 years and older. These seizures include partial-onset seizures and primary generalized tonic-clonic seizures. It also treats seizures related to Lennox-Gastaut syndrome. Topiramate can also help prevent migraine headaches in people 12 years and older.
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.
Topiramate works by reducing the excitability of brain cells. It also increases the activity of a brain chemical called GABA. These actions help to prevent seizures and migraines.
- • 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
- • Tingling or numbness
- • Loss of appetite
- • Weight loss
- • Speech problems
- • Tiredness
No adverse event reports.
- Headache 6,464
- Feeling sick to your stomach 5,710
- Feeling very tired 5,292
- Pain 4,486
- Migraine headache 4,373
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.
Topiramate can cause serious side effects. It can cause vision problems, including sudden nearsightedness and glaucoma. It can decrease sweating and increase body temperature, especially in children. It can cause metabolic acidosis (too much acid in the blood). It may increase the risk of suicidal thoughts or actions. It can affect thinking and coordination. It can harm an unborn baby. It can decrease bone mineral density. It can slow growth in children. It can cause serious skin reactions. It can cause kidney stones. If you experience any of these, contact your doctor immediately.
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.
Topiramate can harm your unborn baby. It may cause birth defects like cleft lip or cleft palate. It can also cause the baby to be smaller than normal. If you are pregnant or plan to become pregnant, talk to your doctor about the risks and benefits of taking topiramate.
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How to Read This ethinyl estradiol/etonogestrel vs topiramate Comparison
ethinyl estradiol/etonogestrel is classified in the Vaginal Contraceptive Ring drug class, while topiramate 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 topiramate has 26,325. 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 this medicine can lower the amount of birth control in your blood, making it less effective at preventing pregnancy.. 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 topiramate - 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.