Determination of natural thorium isotopes (230Th and 232Th) in calcium and magnesium supplements and the potential effective exposure radiation dose for human

•Content of 230Th and 232Th in calcium and magnesium supplements was investigated.•Risk to human consumers from radioactive exposure was estimated.•The supplements could be considered as an additional source of radionuclides in diet.•Studied supplements are safe for consumers from the radiological point of view.