Yantono Widarto, W. (2026) “The Effects of Creatine snd Protein Supplements on Cystatin C and Serum Creatinine Levels Among Male Weight Training Enthusiasts Aged 20-35 Years in Surabaya Gymnasiums”, International Journal of Health and Pharmaceutical (IJHP), 6(1), pp. 367–372. doi: 10.51601/ijhp.v6i1.568.