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  • Title: Oral administration of aspartame is not proconvulsant in rats.
    Author: Tilson HA, Thai L, Zhao D, Sobotka TJ, Hong JS.
    Journal: Neurotoxicology; 1989; 10(2):229-38. PubMed ID: 2616065.
    Abstract:
    These experiments examined the potential for single or repeated doses of aspartame to exacerbate or facilitate the production of seizures in Fischer-344 rats. In adult animals, 1,000 mg/kg of aspartame given by gavage acutely or over a 14 day period had no significant effect on the rate of kindling induced by stimulation of the prepyriform cortex. A single dose of 1,000 mg/kg of aspartame had no effect on the number of animals developing tonic seizures after electroconvulsive shock, nor did aspartame affect the frequency or duration of seizure activity after pentylenetetrazol. In a second series of studies, young male and female rats were dosed with 1,000 mg/kg of aspartame on day 3-13 or 21-35 of age. Prior exposure to aspartame had no significant effect on the rate of kindling at 90 days of age. These experiments indicate that aspartame does not act a pro-convulsant in rats.
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