Vitamin C plays a role in the body's natural collagen formation: it is involved in the enzymatic reactions needed to form collagen fibres. That is why combining collagen peptides with vitamin C is considered logical — both components are linked by the same process.
Even if you get vitamin C from your diet, its level can fluctuate depending on the season, the quality of the food and individual characteristics. Including vitamin C directly in the collagen formula means that both components are taken at the same time, without having to keep separate track of taking them together.
At the same time, it is important to understand that the supplement does not replace a varied diet and is not a medicine. If you take other vitamin complexes, consider your total vitamin C intake so as not to exceed the recommended levels. If you have chronic conditions, are pregnant or breastfeeding, or take medicines, it is better to consult a specialist before you start taking it. The powder is not used in case of hypersensitivity to its ingredients.