Acerola is a small, bright red fruit that contains one of the highest concentrations of vitamin C found in nature. A 100-gram serving (about 3.5 ounces) delivers roughly 1,678 mg of vitamin C, which is over 1,800% of the daily recommended value. Also called Barbados cherry, acerola grows on a shrub or small tree native to tropical regions of the Americas and is now widely cultivated in Brazil, the Caribbean, and parts of Southeast Asia.
The Plant and the Fruit
Acerola (Malpighia emarginata) grows as either a large shrub or a small tree, typically reaching 10 to 15 feet tall. It produces small cherry-like fruits, roughly the size of a marble or a quarter, that ripen from green to bright red. The flavor is tart and slightly sweet, often compared to a sour apple or cranberry. Unlike true cherries, acerola fruits are extremely perishable. They begin to ferment and lose nutrients within hours of being picked, which is one reason you rarely see them fresh outside the tropics.
Nutritional Profile
Vitamin C is acerola’s headline nutrient, but the fruit is far from a one-trick source. It contains a range of carotenoids (including beta-carotene and lutein), flavonoids like quercetin and naringenin, anthocyanins, and several organic acids. The beta-carotene content alone has been measured at 5.84 mg per gram of dry weight, making acerola a meaningful source of provitamin A as well.
The polyphenol content ranges from about 379 to 444 mg per 100 grams of dry weight, depending on the variety. These polyphenols include compounds like chlorogenic acid, catechins, and resveratrol, all of which contribute to the fruit’s antioxidant activity. The dominant anthocyanin, cyanidin-3-rhamnoside, gives ripe acerola its deep red color and ranges from 149 to 682 micrograms per gram of fresh fruit.
Interestingly, the nutrient profile shifts as the fruit ripens. Levels of compounds like kaempferol, luteolin, and chlorogenic acid increase during ripening, while others like ferulic acid and p-coumaric acid decrease. This means green (unripe) acerola and red (ripe) acerola offer somewhat different nutritional profiles, though both are rich in vitamin C.
How Acerola Vitamin C Compares to Synthetic
One of the more compelling findings about acerola is that its vitamin C appears to be better absorbed than synthetic ascorbic acid. A study in healthy Japanese subjects found that something in acerola juice, beyond the vitamin C itself, improved how the body absorbed and retained the nutrient. The likely explanation is that the other compounds in the fruit (flavonoids, anthocyanins, organic acids) work together to enhance absorption. This is a good example of why whole-food sources of a vitamin can behave differently in the body than an isolated supplement.
To put the vitamin C content in perspective: an orange contains about 53 mg of vitamin C per 100 grams. Acerola contains roughly 1,678 mg per 100 grams. That makes acerola about 30 times more concentrated in vitamin C than an orange.
Antioxidant and Anti-Inflammatory Effects
Acerola’s health benefits extend well beyond simply delivering vitamin C. The combination of vitamin C, carotenoids, flavonoids, and anthocyanins gives the fruit broad antioxidant activity, meaning it helps neutralize the unstable molecules that contribute to cell damage and chronic inflammation.
A study on elite endurance athletes found that acerola supplementation reduced markers of low-grade chronic inflammation. Athletes taking acerola showed lower neutrophil counts (a type of white blood cell that rises during chronic inflammation) and decreased levels of certain immune markers associated with persistent inflammatory states. Levels of a protein called C1q, which increases during inflammation, also dropped significantly. On the metabolic side, the athletes showed improvements in liver enzyme activity and blood sugar and urea levels, suggesting better metabolic flexibility, which is the body’s ability to efficiently switch between fuel sources.
Quercetin, found in high amounts in acerola, likely plays a role in these effects. It has established anti-inflammatory properties and has been linked to performance benefits in athletic populations. The combination of quercetin with vitamin C and other polyphenols may produce stronger effects than any single compound alone.
Common Forms and How It’s Used
Because fresh acerola spoils so quickly, most people encounter it in processed forms. The most common options are freeze-dried powder, juice, frozen pulp, and concentrated extract in capsules or tablets. Powder is popular as a smoothie ingredient or a natural vitamin C supplement. Juice is widely consumed in Brazil and the Caribbean, often blended with other tropical fruits to balance the tartness.
Acerola also shows up in skincare products. Its high concentrations of vitamin C, beta-carotene, and polyphenols make it attractive as an ingredient in serums and creams aimed at brightening skin and reducing oxidative damage. The anthocyanins and carotenoids in particular have properties that complement topical vitamin C formulations.
Safety and Side Effects
Acerola fruit is safe for most adults when consumed in amounts that keep total vitamin C intake below 2,000 mg per day. That threshold matters because acerola is so vitamin C-dense that it’s easy to overshoot. Exceeding 2,000 mg daily increases the risk of digestive side effects, particularly severe diarrhea.
People prone to kidney stones should be cautious. High doses of vitamin C from any source can increase the formation of oxalate stones, and acerola’s extreme vitamin C concentration makes this a real consideration for anyone with a history of stones. There’s also a notable cross-reactivity with latex: if you have a latex allergy, you may react to acerola as well.
There’s no established optimal dose for acerola supplements specifically, since products vary widely in their vitamin C concentration. Reading labels for total vitamin C per serving and staying within the 2,000 mg daily upper limit is the most practical approach.