A. The exact value depends on the age and gender of the individual. The recommended vitamin C for 7 to 12 months is 50 mg. For 1 to 3 years, it is 15 mg. For 4 to 8 years, it is 25 mg; for 9 to 13 years, it is 45 mg. For 14 to 18 years, it is 75 mg (both male and female). For adults above 19 years, 90 mg for males and 75 mg for females.