[en] Beverages consumption containing radionuclides may contribute to radiation dose and poses higher cancer risk to human. Studies were conducted to determine the concentration of radionuclides present in pre-mix instant beverage. Based on the consumption rate by Malaysian adults, annual effective dose and the associated cancer risk were estimated. The activity concentration was found ranged in between 63 to 1360 Bq/kg for 40K. For other natural radionuclides of 226Ra, 228Ra, 232Th, 238U, it was ranged between 0.88 - 6.43 Bq/kg, 0.83 - 8.48 Bq/kg, 0.62 - 5.73 Bq/kg and 2.64 -21.49 Bq/kg, respectively, whilst the artificial radionuclides were less than 2 Bq/kg. Calculated annual effective doses due to the intake of radionuclides by ingestion was between 44.6 - 170.0 ?Sv/y, with potential of cancer risk incurrence between 16 to 59 cases in every 100,000 people. (author)