Every day I start off with a nice glass of liquid extract of the fruit of the orange tree
So orange juice?  I'm a low-carb person so no juice for me, but I do take vitamin C
I also take Vitamin C even though Evidence does not support use in the general population for the prevention of the common cold
I take it because I don't want to get scurvy - LOL!  I don't get much eating keto (meats and green veggies)
Scurvy
Scurvy is a disease resulting from a lack of vitamin C (ascorbic acid). Early symptoms of deficiency include weakness, feeling tired, and sore arms and legs. Without treatment, decreased red blood cells, gum disease, changes to hair, and bleeding from the skin may occur. As scurvy worsens there can be poor wound healing, personality changes, and finally death from infection or bleeding.
It takes at least a month of little to no vitamin C in the diet before symptoms occur. In modern
water to the concentrate.
The health value of orange juice is debatable: it has a high concentration of vitamin C, but also a very high concentration of simple sugars, comparable to soft drinks. As a result, some government nutritional advice has been adjusted to encourage substitution of orange juice with raw fruit, which is digested more slowly, and limit daily consumption.
History.
During World War II, American soldiers rejected vitamin C-packed lemon crystals because of their unappetizing taste. Thus the government searched for