milontin
Milontin (Phensuximide) is a medication used to treat Absence Epilepsy.
Phensuximide · by Parke Davis
Key facts
- Active ingredient
- Phensuximide
- Form
- Capsule
- Strength
- Phensuximide 500MG
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- absence epilepsy
- Manufacturer
- Parke Davis
- FDA application
- NDA008855
- Availability
- Discontinued (per FDA)
May treat (source: NIH RxClass)
Dosage forms
Capsule
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
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Frequently asked questions
- What does Milontin treat?
- Milontin (Phensuximide) may be used to treat absence epilepsy, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- Is there a coupon or discount for Milontin?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Milontin. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Milontin?
- Milontin is marketed by Parke Davis. You can see Parke Davis's full profile, rating, and other products on pharmaranks.
- Is Milontin a brand-name or generic drug?
- Milontin is a brand-name product with the active ingredient Phensuximide.
- Is Milontin available over the counter?
- No. Milontin is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Milontin come in?
- Milontin is currently marketed as capsule, per the FDA's National Drug Code Directory.
- Is Milontin FDA-registered?
- Milontin is on record with the U.S. FDA under application number NDA008855. You can verify this on its official FDA label.
Information is sourced from public FDA regulatory data. Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
What people report to the FDA about PHENSUXIMIDE
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 2 reports naming PHENSUXIMIDE — the active ingredient in Milontin, and the FDA flagged 100% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- adverse event1 reports
- anticonvulsant drug level increased1 reports
- ataxia1 reports
- back pain1 reports
- choreoathetosis1 reports
- cognitive disorder1 reports
- confusional state1 reports
- nystagmus1 reports
Read these as a signal, not a rate. A report does not mean PHENSUXIMIDE caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.
Source: openFDA drug/event (FAERS), retrieved September 25, 2026.
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