Vitamin C is an essential nutrient, meaning our body does not produce it on its own, we have to insource it into our body everyday!
Vitamin C is in many ways misunderstand and abused in it's knowledge.
Our body needs a minimum of 60-90 mg of vitamin C to stay healthy as recommended by modern science! If you smoke on a regular basis, it is recomended to add an extra 35 mg /day.
Most people don't realize that the Vitamin C they buy in the store or online is NOT a nutrient, It's only ascorbic acid.
Ascorbic Acid IS NOT Vitamin C !
Now, how do we know this ?? Vitamin C is essential to our body and it's deficiency of the vitamin C is shown as a disease called Scurvy ! So as an example if you were a sailer a long time ago and you didn't have access to proper Vitamin C than you were going to get Scurvy!
https://www.elixirdepot.com/blog/the-best-natural-vitamin-c-supplement-what-they-dont-tell-you