Anticonvulsants, Hydantoin (Systemic)
Side Effects of This MedicineAlong with its needed effects,
a medicine may cause some unwanted effects. Although not all of these side
effects may occur, if they do occur they may need medical attention.
Check with your doctor as soon as possible
if any of the following side effects or signs of overdose occur:
More common
Bleeding, tender, or enlarged gums (rare with ethotoin); burning, tingling, pain, or itching, especially in the groin - following
fosphenytoin injection; 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
Rare
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 (severe); 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 (unusual); yellow eyes or skin
Rare (with long-term use of phenytoin)
Numbness, tingling, or pain in hands or feet
Other side effects may occur that usually do not need medical
attention. These side effects may go away during treatment as your body adjusts
to the medicine. However, check with your doctor if any of the following side
effects continue or are bothersome:
Other side effects not listed above may also occur in
some patients. If you notice any other effects, check with your doctor.
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