EFSA has concluded that advantame and its metabolites pose no safety concern for consumers at the proposed uses and use levels as a sweetener.
Here you can find the complete scientific opinion.
“Metabolism and toxicokinetics of advantame and its main metabolite, ANS9801-acid, have been studied in mice, rats, rabbits, dogs and humans. Advantame is rapidly but poorly absorbed and the main excretion route is via faeces. The Panel concluded that advantame does not raised concern regards to genotoxicity and carcinogenicity. The critical effect observed in animal studies was maternal toxicity (gastrointestinal disturbances) in the prenatal developmental toxicity study in rabbits. The NOAEL for this effect was 500 mg advantame/kg bw/day. Advantame was well tolerated in single or repeated doses up to 0.5 mg/kg bw/day by normo-glycemic or diabetic subjects. The Panel established an ADI of 5 mg/kg bw/day based on the application of a 100-fold uncertainty factor to the NOAEL of 500 mg/kg bw/day for maternal toxicity from the prenatal developmental toxicity study in the rabbit. Conservative estimates of advantame exposure for high level adults and children consumers were below the ADI for the proposed use levels.”
(Foutn EFSA journal)