An orange or a cup of strawberries, chopped red pepper or broccoli provides enough vitamin C for the day. The recommended daily amount for vitamin C is 75 milligrams (mg) a day for women and 90 mg a day for men. During pregnancy, 120 mg a day are recommended. The upper limit for all adults is 2,000 mg a day.
--From Mayo Clinic
女人:75mg;
怀孕妇女:120mg
男人:90mg
人类最大剂量不能过每天2000mg
楼下这两个基本上接近人类每天最大量:
NutriFlair Liposomal Vitamin C:
https://www.amazon.com/gp/product/B07DH1ZJZ9/ref=ox_sc_act_title_2?smid=A2L92RDLYLGEQ3&psc=1
DACHA Liposomal Vitamin C:
https://www.amazon.com/gp/product/B07DR13XSX/ref=ox_sc_saved_image_1?smid=A3FQTP2N7SQL2&psc=1