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H tr lm p da, chng lo ha, gip sng da L Glutathione c ch hot ng ca enzym Tyrosinase, gim sn xut melanin (dng Eumelanin: sc t mu nu v en) Gim tnh trng stress oxy ha, gim lo ha da Vitamin C H tr kch thch qu trnh tng hp v n nh cu trc si collagen

The Journal of Clinical Investigation , 119 (6), 14291437

WHO, Toronto Accessed on 20 May 2015 Chernoff R (2009) Issues in geriatric nutrition

Oral supplementation has shown effectiveness but may not match the efficacy of IM in certain scenarios

To measure the effects, the UPDRS was again used to quantify patient outcomes