EpilepsyPhenytoin coupons
Phenytoin

Phenytoin Coupons & Savings Card – Discount Prices from $60.59

Generic for: Dilantin, Dilantin infatabs, Dilantin-125

Phenytoin, also known by the brand name Dilantin, is a medication prescribed to manage and prevent seizures in both adults and children. As an antiepileptic drug, it helps control tonic-clonic and psychomotor seizures, and is also used to prevent seizures during and after brain surgery. The exact mechanism by which phenytoin operates is not fully understood, but it is believed to stabilize overactive nerve impulses in the brain to reduce seizure activity. Available in various forms such as capsules, chewable tablets, and liquid suspension, the dosage of phenytoin is tailored based on age, weight, and seizure control effectiveness. Regular monitoring through blood tests is necessary to avoid potential toxicity, as excessive levels of the drug in the body can be harmful. Common side effects may include coordination difficulties, unusual eye movements, and drowsiness. Always consult with a healthcare professional before starting or adjusting any medication regimen.
Our coupons are free to use. Before paying, show the pharmacist your Phenytoin savings card to get your free discount. Use our filters below to edit the prescription box to match your needs. The Phenytoin prices will update based on your prescription needs. Above our Phenytoin coupons, you can change your location to see pharmacy prices and costs in other areas. We're here to help you buy Phenytoin at the lowest price with our prescription discount card.

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10GM of 1, Phenytoin (1 Bottle)

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CVS

$93.44

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$60.59

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$67.37

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$71.58

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Phenytoin savings card

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Phenytoin dosage forms

Use our Phenytoin 10GM of 1 coupon with prices from $60.59 for 1 Bottle. You can also use our Phenytoin 237ML of 125MG/5ML coupon with prices from $18.2 for 1 Bottle.
DosageQuantityPrice fromPer unit
10GM of 11 Bottle$60.59$60.59
237ML of 125MG/5ML1 Bottle$18.2$18.2

Our price history data is based on aggregated prescription data collected from participating pharmacies in America. Our prescription data updates daily to reflect the latest price changes. If you notice a missing data point, it means there wasn't sufficient data available to generate a monetary value for that date.

Phenytoin Warnings

The following safety information is crucial for anyone using this medication. Please review these warnings carefully and consult your healthcare provider if you have any questions or concerns.

  • Risk of Withdrawal Seizures: Do not abruptly stop taking phenytoin (Dilantin), as it may lead to a severe condition called status epilepticus, characterized by prolonged or repeated seizures. Consult your neurologist to develop a safe plan for gradually reducing or switching your medication.

  • Suicidal Thoughts or Behavior: Phenytoin (Dilantin) may increase the risk of suicidal thoughts or behavior shortly after starting treatment and throughout its use. If you notice mood changes, worsening depression, or thoughts of self-harm, contact a healthcare professional immediately. Your prescriber will weigh the medication's risks and benefits based on your condition.

  • Serious Skin and Allergic Reactions: Phenytoin (Dilantin) may rarely cause severe skin reactions like toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome (SJS), and Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS). If a rash develops, discontinue use and seek medical advice unless your prescriber determines it's unrelated. Avoid use if you have previously had allergic reactions to phenytoin (Dilantin) or similar drugs such as carbamazepine. Seek medical help for symptoms like rash, swollen lymph nodes, fever, facial swelling, blisters, or skin peeling. DRESS can also affect vital organs, so inform your prescriber if you experience yellowing skin or eyes, nausea, vomiting, or loss of appetite.

  • Heart Problems: This medication can slow heart rate or cause cardiac arrest. If you notice dizziness, fainting, or an unusually slow heartbeat, contact your doctor immediately, especially if you have a history of heart issues.

  • Liver Problems: Phenytoin (Dilantin) can cause serious liver damage or even liver failure, either independently or as part of an allergic reaction (DRESS). Notify your doctor if you experience symptoms such as jaundice, fever, nausea, vomiting, or stomach pain.

  • Lower Blood Cell Count: Although rare, phenytoin (Dilantin) can decrease white blood cells, platelets, and red blood cells, leading to potentially life-threatening conditions. Inform your doctor if you notice unusual bruising, frequent infections, or persistent fatigue.

  • Effects on Vitamin D and Bone Health: Long-term use of phenytoin (Dilantin) might lead to weakened bones, increasing the risk of osteopenia, osteoporosis, or fractures by accelerating vitamin D breakdown. Your prescriber might monitor your bone health and suggest preventive measures.

  • Risk to Unborn Babies: Phenytoin (Dilantin) can harm an unborn baby, increasing the risk of birth defects. Pregnant individuals or those planning to become pregnant should discuss potential risks with their prescriber. If pregnant, consider joining the North American Antiepileptic Drug (NAAED) Pregnancy Registry to contribute to safety research.

  • High Blood Sugar Levels: This medication may elevate blood sugar levels, complicating diabetes management. Notify your prescriber if you notice changes when monitoring your blood sugar.

  • High Phenytoin Levels: Excessive levels of phenytoin (Dilantin) can cause confusion, delirium, or brain damage affecting coordination. If you experience mental changes, contact your doctor, who may adjust your dosage.

Contraindications: Do not use phenytoin (Dilantin) if you are allergic to it or similar medications, have a history of liver damage from it, or are taking delavirdine. Always consult your healthcare provider if these conditions apply to you.

Phenytoin Side Effects

Common side effects:

  • Dizziness
  • Sleepiness
  • Trouble sleeping
  • Headaches
  • Swelling and bleeding of the gums

    Less common but important to monitor:

  • Metallic taste
  • Muscle twitching
  • Excessive hair growth

    Serious side effects:

  • Unusual or sudden changes in mood (e.g., depression, suicidal thoughts)
  • Coordination issues (e.g., unpredictable eye movements, slurred speech, confusion)
  • Heart-related symptoms (e.g., slow heartbeat, chest pain, fainting)
  • Signs of liver problems (e.g., severe stomach pain, yellowing of the skin or eyes, dark urine)
  • Low blood cell counts (e.g., easy bruising, frequent infections, swollen lymph nodes)
  • Painful or prolonged erection lasting more than four hours
  • Serious allergic reactions (e.g., rash, fever, swollen lymph nodes, itching, severe dizziness, trouble breathing)

Phenytoin Interactions

Interactions with high risk of serious adverse effects and should be avoided:

  • Artemether
  • Atazanavir
  • Boceprevir
  • Cabotegravir
  • Cobicistat
  • Daclatasvir
  • Darunavir
  • Dasabuvir
  • Delamanid
  • Delavirdine
  • Doravirine
  • Elbasvir
  • Elvitegravir
  • Fostemsavir
  • Grazoprevir
  • Isavuconazonium
  • Lorlatinib
  • Lurasidone
  • Maraviroc
  • Ombitasvir
  • Paritaprevir
  • Piperaquine
  • Praziquantel
  • Ranolazine
  • Rilpivirine
  • Ritonavir
  • Telaprevir
  • TenofovirAlafenamide

Interactions with moderate risk that may require dose adjustment, closer monitoring, or timing changes:

Interactions with low risk that usually do not require a change in therapy:

Phenytoin FAQs
What is the drug phenytoin used for?

Phenytoin is used primarily to control seizures in the treatment of epilepsy. It helps to prevent and manage tonic-clonic (grand mal) and partial seizures.

The most common adverse effects of phenytoin include dizziness, drowsiness, unsteadiness, nausea, vomiting, and gingival hyperplasia (gum overgrowth). Other possible side effects are rash, hirsutism (excessive hair growth), and nystagmus (involuntary eye movements). Long-term use may lead to complications such as osteomalacia (softening of the bones) and peripheral neuropathy. Regular monitoring and consultation with a healthcare provider are recommended to manage these effects.

Phenytoin is primarily used as an anticonvulsant to manage seizures, but it can also have effects on the heart. It acts as a class IB antiarrhythmic agent, which means it can help stabilize the cardiac membrane and reduce abnormal electrical activity in the heart. This can be beneficial in treating certain types of cardiac arrhythmias, particularly those associated with digitalis toxicity. However, its use for cardiac purposes is less common compared to its use in seizure management.

Phenytoin can cause several major adverse effects. These include:- Central Nervous System Effects: Dizziness, ataxia, nystagmus, and confusion.- Gingival Hyperplasia: Overgrowth of gum tissue.- Hirsutism: Excessive hair growth.- Skin Reactions: Rash, which can be severe and lead to conditions like Stevens-Johnson syndrome or toxic epidermal necrolysis.- Hematologic Effects: Blood dyscrasias such as leukopenia, thrombocytopenia, and agranulocytosis.- Hepatotoxicity: Liver damage or dysfunction.- Osteomalacia: Softening of the bones due to vitamin D metabolism interference.- Cardiovascular Effects: Arrhythmias and hypotension, especially with intravenous administration.Patients should be monitored for these adverse effects, and any concerning symptoms should be reported to a healthcare provider.

Phenytoin is still used in certain cases, but its use has declined due to the availability of newer antiepileptic drugs with more favorable side effect profiles and pharmacokinetics. Phenytoin can cause side effects such as gingival hyperplasia, hirsutism, and potential for drug interactions. Additionally, it requires careful monitoring of blood levels due to its narrow therapeutic range. Newer medications often offer improved safety and efficacy, leading to a preference for these alternatives in many clinical situations.