Acerola

botanical

What is it

Acerola (Malpighia emarginata), also called Barbados cherry, is a small red fruit native to the Americas that contains exceptionally high natural concentrations of vitamin C (ascorbic acid). It is widely used as a natural vitamin C source in dietary supplements.

How it works

Acerola's primary appeal is its vitamin C content, which can reach 1,500 to 4,500 mg per 100 g of fresh fruit, depending on ripeness and variety. This is roughly 30 to 80 times the vitamin C content of oranges. The fruit also contains carotenoids (beta-carotene), flavonoids (anthocyanins), and small amounts of B vitamins. In supplement form, acerola is often used to provide vitamin C in a 'whole food' matrix that includes natural co-factors like bioflavonoids, which some research suggests may improve vitamin C bioavailability or retention compared with isolated ascorbic acid. Direct head-to-head evidence is limited. Vitamin C from any source supports collagen synthesis, immune function, iron absorption, and acts as an antioxidant. Concentrated acerola extracts may be standardized to a specific vitamin C percentage (often 17 to 25 percent).

Evidence for 4 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Vitamin C deficiency prevention

Grade A

Strong evidence

Acerola is an effective source of vitamin C for preventing and treating deficiency. The vitamin C in acerola is bioavailable and chemically identical to synthetic ascorbic acid, with the potential addition of natural bioflavonoid cofactors.

Iron absorption

Grade A

Strong evidence

Vitamin C taken with non-heme iron (from plant foods or supplements) substantially enhances iron absorption. Useful for those with iron deficiency anemia, particularly people on vegetarian diets.

Immune support

Grade B

Good evidence

Vitamin C supports immune cell function and may modestly reduce the duration of the common cold in adults, with stronger effects in people under physical stress (athletes, soldiers). Regular intake works better than only starting at symptom onset.

Skin and collagen support

Grade C

Moderate evidence

Vitamin C is required for collagen synthesis, and adequate intake supports skin elasticity and wound healing. Studies of higher intakes for cosmetic skin benefits show modest, variable results.

3 commercial forms

Acerola fruit powder

Whole food form; typical vitamin C content 17 to 25 percent.

Freeze-dried or spray-dried fruit powder. Vitamin C content varies by harvest and processing; check the label.

Standardized acerola extract

Concentrated to a specific vitamin C percentage.

Allows accurate vitamin C dosing in a smaller capsule. Common standardizations are 25 percent, 50 percent, or higher.

Acerola juice or concentrate

Liquid form, may contain sugars added or naturally present.

Less common; provides vitamin C alongside flavonoids in juice form. Tart, somewhat tropical flavor.

Dosage

The RDA for vitamin C is 75 mg/day for women and 90 mg/day for men, with a Tolerable Upper Intake Level of 2,000 mg/day. Acerola supplements typically provide 100 to 500 mg of vitamin C per serving from the fruit extract. The actual amount of acerola needed depends on standardization: a 25 percent extract requires 400 mg to deliver 100 mg vitamin C.

When and how to take it

Acerola can be taken at any time of day. Vitamin C is water-soluble, so it does not require fat for absorption. Splitting the dose between morning and afternoon improves overall absorption because the gut transporters for ascorbate become saturated at higher single doses. Taking acerola with iron-rich meals enhances non-heme iron absorption.

Food sources

Food	Amount	%DV
Acerola cherry (fresh)	100 g	—
Camu camu	100 g	—
Guava	1 cup	—
Red bell pepper	1 cup	—
Kiwifruit	1 medium	—
Orange	1 medium	—
Strawberries	1 cup	—
Broccoli (cooked)	1 cup	—

Safety

Acerola is generally well tolerated. Side effects relate primarily to vitamin C content: doses above 2,000 mg/day may cause gastrointestinal upset, diarrhea, and increase the risk of kidney stones in susceptible individuals. Allergic reactions to acerola itself are rare but possible. Latex-allergic individuals may rarely cross-react with acerola.

Who should be cautious

People with a history of kidney stones (especially calcium oxalate stones) should avoid high-dose vitamin C from any source, including acerola. Those with iron overload conditions like hemochromatosis should not take high doses. G6PD-deficient individuals should be cautious with very high vitamin C doses.

Interactions

High doses of vitamin C from acerola can increase iron absorption, which may be a concern for people with hemochromatosis. Vitamin C may modestly affect anticoagulants like warfarin at very high doses and could interfere with some chemotherapy drugs. Aluminum-containing antacids may be absorbed more readily when taken with vitamin C.

Frequently asked questions

Is acerola better than synthetic vitamin C?⌄

Vitamin C from acerola is chemically the same molecule as synthetic ascorbic acid and is absorbed similarly. Acerola may provide additional flavonoids that some research suggests support vitamin C activity, but for basic vitamin C needs, both forms are effective.

How much acerola do I need for 100 mg of vitamin C?⌄

It depends on standardization. A 25 percent extract requires 400 mg; a 17 percent extract requires about 590 mg; raw fruit powder typically needs about 3 to 5 g.

Can children take acerola?⌄

Yes, acerola is commonly used in children's chewable vitamin C supplements. Follow age-appropriate dosing to stay under the pediatric upper intake limits.

Does acerola contain other nutrients besides vitamin C?⌄

Yes, but in modest amounts. It contains some carotenoids, anthocyanins, B vitamins, and minerals, though most of its nutritional value comes from vitamin C.

References

Acerola (Wikidata) — Wikidata link
Vitamin C - Health Professional Fact Sheet — NIH Office of Dietary Supplements link

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Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you're pregnant, breastfeeding, on medications, or managing a chronic condition.