Apples contain modest amounts of several vitamins, with vitamin C as the standout. A medium apple with skin provides roughly 8 mg of vitamin C, which covers about 9% of the daily recommended intake. That’s not as much as an orange, but apples make up for their moderate vitamin levels with a rich mix of antioxidant plant compounds that work alongside those vitamins.
Vitamin C: The Primary Vitamin in Apples
Vitamin C is the most abundant vitamin in an apple. A medium apple without skin contains about 5 mg, while eating the skin bumps that number closer to 8 mg. That skin matters: it holds a concentrated share of the fruit’s vitamin C along with many of its protective antioxidants. For comparison, the daily recommended intake for vitamin C is 90 mg for men and 75 mg for women, so a single apple covers a small but meaningful slice of that target.
Vitamin C supports your immune system, helps your body absorb iron from plant foods, and acts as an antioxidant that protects cells from damage. While apples aren’t a powerhouse source on their own, they contribute to your overall intake alongside other fruits and vegetables throughout the day.
Other Vitamins in Smaller Amounts
Beyond vitamin C, apples contain trace levels of several B vitamins and small amounts of fat-soluble vitamins. Here’s what you’ll find in a medium apple:
- Vitamin A: A small amount, primarily as beta-carotene in the skin, contributing roughly 2% of daily needs.
- Vitamin K: About 4 micrograms per apple, which is a few percent of the daily value. Vitamin K plays a role in blood clotting and bone health.
- Vitamin E: Present in trace amounts, not enough to be a significant dietary source.
- B vitamins (B1, B2, B6, folate): Each present in very small quantities. Individually they contribute less than 3% of daily needs, but they support energy metabolism and nervous system function.
None of these secondary vitamins are present in large enough amounts to make apples a go-to source. The real nutritional case for eating apples goes beyond vitamins alone.
Antioxidants That Work Alongside the Vitamins
Apples are more nutritionally interesting than their vitamin profile suggests, because they’re loaded with plant compounds called polyphenols that function as powerful antioxidants. These compounds often work in tandem with vitamins to protect cells and reduce inflammation.
The most notable ones include quercetin, catechin, and chlorogenic acid. Catechin concentrations vary dramatically between apple varieties, ranging from about 110 to over 5,000 micrograms per gram of fruit in research comparing dozens of cultivars. Rutin, another antioxidant in the flavonoid family, ranges from 12 to nearly 484 micrograms per gram depending on variety. Total phenolic content (a broad measure of antioxidant compounds) can vary more than thirtyfold between different apple types.
These compounds are concentrated in the skin and just beneath it. Peeling an apple removes a large share of both its vitamin C and its antioxidants, so eating the whole fruit gives you the most benefit.
How Variety Affects Nutrition
Not all apples are created equal when it comes to vitamins and antioxidants. Research on antioxidant content across apple genotypes found that heritage and wild varieties tend to pack significantly more protective compounds than common commercial types. Wild crabapple relatives had the highest phenolic and flavonoid content, while popular commercial varieties like Red Delicious and Fuji consistently scored lower.
Among widely available apples, tart varieties like Granny Smith generally contain more vitamin C than sweeter types. Darker red and deeply colored apples tend to have higher antioxidant levels in their skins. If maximizing nutrition is your goal, choosing a tart, deeply colored apple and eating it with the skin on is your best bet.
How Storage Affects Vitamin Content
The vitamin C in your apple starts declining the moment it’s harvested, and storage conditions make a big difference. Research on cold-stored fruits found that after just 15 days of freezing at negative 20°C, fruits lost between 41% and 51% of their vitamin C. Apples were among the most susceptible to this degradation.
Refrigeration slows the loss but doesn’t stop it. Since many supermarket apples have been in controlled-atmosphere cold storage for weeks or even months before reaching the shelf, the vitamin C content of the apple you eat may be noticeably lower than what’s listed in nutrition databases. Cooking or baking apples accelerates the loss further, since vitamin C breaks down with heat. For the highest vitamin content, eat apples raw and as fresh as possible.
Apples Compared to Other Fruits
If you’re choosing fruit primarily for vitamins, apples rank in the middle of the pack. An orange delivers about 70 mg of vitamin C, nearly ten times what an apple provides. Strawberries, kiwis, and bell peppers are all far richer sources. For vitamin A, carrots and sweet potatoes dominate. For B vitamins, bananas and avocados pull ahead.
Where apples distinguish themselves is in their unique combination of fiber (about 4.4 grams per medium apple), low calorie count (roughly 95 calories), and that diverse mix of polyphenol antioxidants. The health benefits associated with regular apple consumption, including links to lower cardiovascular risk and better blood sugar regulation, likely come from this whole package rather than any single vitamin.