Celontin (methsuximide) is a prescription drug that controls seizures in patients with absence or petit mal epilepsy, a nervous system disorder primarily in children and teens that causes brief seizures. On average, Celontin costs $174.45 but you will pay $50.36 with a free SingleCare Celontin coupon.
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SingleCare’s prescription prices are based on multiple sources. The prices we publish are our best estimate, but we cannot guarantee that the price we display will exactly match the price you receive at the pharmacy. For an exact price, please contact your pharmacy and provide the BIN/GRP/PCN numbers shown on your SingleCare card.
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Prices updated: 12/22/2025
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Celontin (methsuximide) is a prescription drug that controls seizures in patients with absence or petit mal epilepsy, a nervous system disorder primarily in children and teens that causes brief seizures. On average, Celontin costs $174.45 but you will pay $50.36 with a free SingleCare Celontin coupon.
Celontin (methsuximide) is a prescription drug that controls seizures in patients with absence or petit mal epilepsy, a nervous system disorder primarily in children and teens that causes brief seizures. On average, Celontin costs $174.45 but you will pay $50.36 with a free SingleCare Celontin coupon.
Patients can usually expect to pay $174.45 for 30, 300mg capsules of Celontin. Compare this price to a SingleCare Celontin coupon, $50.36 per 30, 300mg capsules. From generics to brand name prescription drugs, you can save as much as 80% with SingleCare savings cards.
The amount of your Celontin copay depends on your insurance plan. With a SingleCare discount card, Celontin costs $50.36 which may be lower than your insurance copay. Ask your pharmacist to do a price comparison. You may save more money with SingleCare than with insurance.
Medicare Part D and Medicare Advantage prescription drug insurance plans cover Celontin for Medicare-eligible patients. If you don't have Medicare, SingleCare offers a Celontin coupon that every month reduces the cost of Celontin to $50.36.
Celontin is a brand-name prescription drug with the active ingredient, methsuximide. There are no methsuximide generic drugs currently available.
Celontin is a generic prescription drug that controls seizures in patients with absence epilepsy, which used to be called petit mal epilepsy. Absence epilepsy is a nervous system disorder that causes brief seizures that usually last fewer than 15 seconds. Absence seizures sometimes involve loss of consciousness and some muscle movements, but they do not involve convulsions or whole-body convulsions. Absence seizures are sometimes barely noticeable.
Celontin belongs to a class of drugs called anticonvulsants. An epileptic seizure is a cascade of uncontrolled and hyper-excited firing of nerve cells in the brain. Seizures are usually triggered by a situation or other stimulus. Celontin, like other anticonvulsants, reduces the brain's excitability, making it less vulnerable to the uncontrolled cascade of the repetitive firing of nerves.
Celontin is taken as a tablet or oral solution once or twice daily. Absence epilepsy is more common among children, so Celontin is usually prescribed to children. An oral solution is easier for younger children to take.
The most common side effects of Celontin include, but are not limited to, headache, dizziness, upset stomach, nausea, stomach pain, abdominal pain, diarrhea, weight loss, loss of balance, loss of coordination, and feeling tired.
Allergic reactions are extremely rare but include hives, rashes, itching, and trouble breathing. Severe allergic reactions are possible, including a lupus-like reaction (fever, joint pain, swollen glands) or Stevens-Johnson syndrome, a drug reaction that causes dark rashes, blistering, and peeling throughout the body as well as fever, sore throat, and flu-like symptoms.
Mood and mental changes are possible. These include confusion, instability, aggression, depression, and, rarely, suicidal thoughts.
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SingleCare is a prescription discount service that offers free coupons on thousands of prescription drugs. It can be used whether you have insurance, Medicare, Medicaid, or none of the above, but it cannot be combined with insurance.
SingleCare provides transparent drug pricing, so you can compare discounts at pharmacies near you. Browse singlecare.com to find drug discounts, helpful information about your prescription, and resources to help you make informed health decisions.
Prescription savings vary by prescription and by pharmacy, and may reach up to 80% off cash price. This is a medical discount plan. This is NOT insurance. This program offers you the opportunity to locate providers of various types of medical services who will offer their services to you at discounted rates. The range of discounts for medical or ancillary services provided under the plan will vary depending on the type of provider and service received. You are fully responsible for paying for all health care services but will be entitled to receive a discount from those health care providers in accordance with the specific pre-negotiated discounted fee schedule. This program does not guarantee the quality of the services or procedures offered by the providers. Except for prescription drugs which you will pay directly to the pharmacy at the time of purchase, all other services received through a program provider will be charged to the credit card on file in your member account. The charge will include an administrative fee for use of the program. Towers Administrators LLC is the licensed discount medical plan organization with its administrative office located at 4510 Cox Road, Suite 111, Glen Allen, VA 23060. SingleCare Services, LLC is the marketer of the discount medical plan organization including its website, singlecare.com, with its corporate office located at 99 High Street, Suite 2800, Boston, MA 02110. For additional information, including an up-to-date list of providers, or assistance with any issue related to program membership, please contact member support any time at www.singlecare.com, or by calling toll-free 844-234-3057, 24 hours, 7 days a week (except major holidays). Pharmacy names, logos, brands, and other trademarks are the property of their respective owners.
Blog articles are not medical advice. They are intended for general informational purposes and are not meant to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. If you think you may have a medical emergency, immediately call your physician or dial 911.
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© 2025 SingleCare Administrators. All rights reserved