<prompt> How much is the safely tolerated value of fluoride mg FKg4-Feb8-Apr16-Aug32-64  <response>: Certainly lethal dose CLD - 32-64 mg F Kg body weightSafely tolerated dose STD - 8-16 mg F kg body weight 14th of CLDAlso note these two important values Probable toxic dose PTD- 2mg F Kg body weightMinimum toxic dose MTD- 5-6 mg F Kg body weight. 