Hydantoin anticonvulsants like Dilantin (Phenytoin) are used most often in the treatment of Epilepsy. Dilantin is also used as an Antiarrhythmic, an Antineuralgic, and a Muscle Relaxant. Dilantin works in the Central Nervous System (CNS) to reduce the symptoms and severity of Epilepsy.
Be sure to tell your doctor of any allergies you have whether it is to medication or food, preservatives, or dyes. Tell your doctor if you are, or become pregnant, or are breastfeeding, as there is some question as to not only how Dilantin will affect your baby, but also as to how well it will work when taken during pregnancy. Also, tell your doctor of any other medications you are taking, including vitamins and supplements, and any medical conditions you may have.
It is very important that you take this medicine exactly as your doctor tells you to. Do not take more or less medicine than directed, and never stop taking Dilantin without discussing it with your doctor first.
If you miss a dose of this medicine, take it as soon as you remember, unless it is almost time for your next dose. Do NOT double doses.
Tell your doctor as soon as possible if you have any of the following: burning, tingling, pain, or itching, especially in the groin; clumsiness or unsteadiness; confusion; continuous, uncontrolled back-and-forth and/or rolling eye movements - may be sign of overdose; swollen glands in neck or underarms; fever; muscle pain; skin rash or itching; slurred speech or stuttering-may be sign of overdose; sore throat; trembling-may be sign of overdose; unusual excitement, nervousness, or irritability.
Also tell him if you develop: bone malformations; burning pain at place of injection; chest discomfort; chills and fever; dark urine; dizziness; frequent breaking of bones; headache; joint pain; learning difficulties-in children taking high doses for a long time; light gray-colored stools; loss of appetite; nausea or vomiting; pain of penis on erection; restlessness or agitation; slowed growth; stomach pain; troubled or quick, shallow breathing; uncontrolled jerking or twisting movements of hands, arms, or legs; uncontrolled movements of lips, tongue, or cheeks; unusual bleeding (such as nosebleeds) or bruising; unusual tiredness or weakness; weight loss; or yellow eyes or skin; numbness, tingling, or pain in hands or feet.
Each Dilantin - Extended Phenytoin Sodium Capsule, USP-contains 30 mg or 100 mg phenytoin sodium. Also contains lactose, confectioner's sugar, talc, and magnesium stearate. The capsule shell and band contain colloidal silicon dioxide, FD&C red No. 3, gelatin, glyceryl monooleate, sodium lauryl sulfate. The Dilantin 30-mg capsule shell and band also contain citric acid, FD&C blue No. 1, sodium benzoate, titanium dioxide. The Dilantin 100-mg capsule shell and band also contain FD&C yellow No. 6, purified water, and polyethylene glycol 200. Product in vivo performance is characterized by a slow and extended rate of absorption with peak blood concentrations expected in 4-12 hours as contrasted to Prompt Phenytoin Sodium Capsules, with a rapid rate of absorption with peak blood concentration expected in 1½ to 3 hours.
Dilantin has the following structural formula: