Side effect of phenytoin are all Except
Side Effects. Headache, nausea, vomiting, constipation, dizziness, feeling of spinning, drowsiness, trouble sleeping, or nervousness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Phenytoin may cause swelling and bleeding of the gums. Ref: KD Tripathi 8th ed.
Osteomalacia
Maculopapular rash
Sedation
Megaloblastic anaemia
Central Nervous system