Thirty-three patients with confirmed cysticercosis, with or without cerebral involvement, were treated with praziquantel at a daily dose of 75 mg/kg tid for 3 to 10 consecutive days and evaluated for tolerance and therapeutic effects. For dermal cysticercosis, a daily dose of 75 mg/kg tid for 3 days is effective. The nodules disappeared in one to 12 months after treatment. Twenty out of 33 patients with cysticercosis had cerebral cysticercosis. Among these 20 cases, 13 had epileptic seizures, 6 had a combination of both epileptic seizures and intracranial hypertension, and one had headache. The efficacy of the treatment of cerebral cysticercosis was assessed by the frequency of convulsions before and after treatment, and by the disappearance or decreased densities of the cystic lesions at brain CT scanning (6 months follow up). A daily dose of 75 mg/kg tid for 7 to 10 days (total 525 to 750 mg/kg) seems to be effective for the treatment of cerebral cysticercosis. The concomitant oral administration of dexamethasone during the course of treatment was effective for preventing and minimizing side effects. Praziquantel was very well tolerated.