Ingredient database › Vitamin C
Is Vitamin C good or bad in dog food?
Vitamin C is a nutritional supplement and rates as Good in our analysis.
Good Bottom line: Vitamin C is a good, beneficial ingredient — a positive sign wherever it appears on the label.
Antioxidant.
This is a solid, beneficial ingredient and a positive sign wherever it appears on the label.
Built on AAFCO & FDA pet-food criteria · Last updated June 2026 · How we rate
What is Vitamin C?
Vitamin C is a nutritional supplement used in dog food. On a label it may also appear as: vitamin c, ascorbic acid.
What to look for on the label
Ingredients are listed by weight, so the ones near the top make up most of the recipe. Vitamin C near the top is a good sign. The fastest way to judge a whole product is to paste its full ingredient list into our free dog food checker, which grades it A–F and flags every ingredient like this one.
How Vitamin C affects the WoofScore
Our grade rewards named whole proteins, vegetables, fruit and beneficial supplements, and penalises vague by-products, cheap fillers, artificial colours and controversial preservatives. Vitamin C contributes as a good-tier item; read the full scoring methodology to see exactly how the grade is calculated.