Sodium fluorid

Human toxicity NaF and ionic fluoride, later only fluoride (1 mg of NaF corresponds to 0.45 mg of fluoride, also called “fluor”) are toxic for humans at the higher doses; gastrointestinal symptoms have occurred following fluoride ingestion from 3 to 5 mg/kg of body weight. The lethal doses of NaF in adults range from 70 to 140 mg/kg, which corresponds to 31.5-63 mg fluoride/kg of body weight [2]. The minimum lethal dose of fluoride is approximately 1 g/70 kg person [3].