A single medium plum provides small but meaningful amounts of several vitamins, most notably vitamin C, vitamin K, and vitamin A. Plums are not a powerhouse source of any single vitamin the way an orange is for vitamin C, but they deliver a broad mix of nutrients and protective plant compounds that add up, especially if you eat a few at a time.
Vitamins in a Fresh Plum
Per 100 grams of raw plum (roughly one large or two small plums), you get about 7 mg of vitamin C, 4 micrograms of vitamin A (as RAE), and a modest dose of vitamin K. One average-sized plum supplies roughly 3.5 to 4.7% of the recommended daily allowance for vitamin K and 1.2 to 1.6% for vitamin A. Vitamin C content is moderate, contributing a useful but not dramatic share of your daily needs.
Plums also contain B vitamins in smaller quantities, including folate and vitamin B6. These play roles in energy metabolism and red blood cell production. The amounts per fruit are low enough that plums work best as one piece of a varied diet rather than a go-to source for any single B vitamin.
Potassium and Other Minerals
Beyond vitamins, plums carry 199 mg of potassium per 100 grams, which supports healthy blood pressure and muscle function. They also provide small amounts of magnesium and traces of boron, both of which play supporting roles in bone health. None of these minerals are present in large enough quantities to meet a significant chunk of your daily needs from one plum alone, but they complement the vitamins nicely.
Where the Nutrients Live: Skin vs. Flesh
The skin and flesh of a plum have noticeably different nutrient profiles, and this matters if you’re tempted to peel them. Research on several plum cultivars found that vitamin C concentrations are higher in the peel than in the pulp. In one variety (Silvia), the peel contained roughly 50% more vitamin C per kilogram than the flesh.
The difference is even more dramatic for protective plant compounds. Carotenoids, the pigments your body can convert into vitamin A, concentrate almost entirely in the skin. Anthocyanins, the blue-red pigments responsible for a plum’s deep color, are found in significant amounts only in the peel. Tannins follow the same pattern. So eating plums with the skin on is worth it from a nutritional standpoint.
Antioxidants Beyond Vitamins
Plums contain a class of compounds that don’t appear on a standard nutrition label but contribute meaningfully to their health value. The two major groups are chlorogenic acid (a type of polyphenol) and anthocyanins like cyanidin-3-rutinoside and cyanidin-3-glucoside. These compounds act as antioxidants, helping neutralize cell-damaging free radicals in the body.
The total phenolic content varies widely by variety. Dark-skinned plums generally pack more of these compounds than yellow or green ones, because anthocyanins are tied directly to pigment. If you’re choosing plums partly for their antioxidant value, go for the deepest-colored ones you can find.
How Prunes Compare to Fresh Plums
Prunes are simply dried plums, and the drying process concentrates their nutrients. Prunes contain more vitamin K than fresh plums and are somewhat higher in B vitamins and minerals across the board. This makes sense: removing water shrinks the volume while leaving the micronutrients behind, so you get more per bite.
Dried plums also deliver a unique combination of nutrients relevant to bone health. A study published in PLOS ONE found that dried plums reversed bone loss in a postmenopausal osteoporosis model, likely due to their mix of vitamin K, potassium, magnesium, boron, and polyphenolic compounds working together. Researchers noted that this combination appears to be somewhat unique to dried plums compared to other dried fruits, though the exact mechanism is still being studied.
The tradeoff with prunes is sugar density. A serving of prunes contains considerably more sugar and calories than the same weight of fresh plums, so portion size matters more.
Getting the Most From Plums
Plums are best thought of as a nutrient-diverse fruit rather than a vitamin-dense one. You won’t get a full day’s supply of any single vitamin from a plum, but you’ll get a broad spread of vitamin C, vitamin K, vitamin A, potassium, and a rich set of antioxidant compounds. Eating two or three plums at a sitting brings those percentages into more meaningful territory.
To maximize what you get, eat them with the skin on, choose dark-skinned varieties when possible, and consider mixing fresh plums with a few prunes to benefit from the concentrated mineral and vitamin K content of the dried form.