Acerola: one enormous number and almost nothing else

The best designed human trials that name acerola never tested acerola. In 72 healthy women aged 35 and over, twelve weeks of a drink holding 2.5 g of collagen peptides with acerola extract, vitamin C, zinc, biotin and a vitamin E complex improved skin hydration, elasticity, roughness and density against placebo. That was a single-blind industry trial with no arm isolating any one ingredient. A second trial of the same product family, triple-blind, 60 women, 12 weeks, reported better facial collagen structure on microscopy for the same six-ingredient supplement, so the two are one line of evidence about a product and none about a fruit. What acerola carries on its own is one number. USDA puts the raw fruit at 1,677.6 mg of vitamin C per 100 g, which is 1,864% of the Daily Value, from a single legacy record with no sampled range behind it and no second national database holding acerola to check it against. Read that figure as an order of magnitude, and against the ceiling rather than the label: 100 g of the raw fruit is 84% of the adult upper intake level of 2,000 mg a day for vitamin C, and more than the whole upper limit for any child under 14. The antioxidant claim acerola is sold on is the one the European Union refused.

The numbers, per 100 g

How much is actually in it

• USDA puts raw acerola at 1,677.6 mg of vitamin C per 100 g, which is 1,864% of the Daily Value, and the number rests on a single legacy record with no sample range behind it. — USDA SR Legacy record for Acerola, west indian cherry, raw (n = 1 record) Evidence E source
  Vitamin C 1,677.6 mg per 100 g (1,864% DV), copper 0.086 mg (10% DV), riboflavin 0.06 mg (5% DV)

What your body absorbs

• Given as 50 mg of vitamin C, acerola juice left significantly less ascorbic acid in the urine at 1, 2 and 5 hours than the same dose of plain ascorbic acid, while the plasma curve was only higher as a trend. — healthy young Japanese men given single oral doses of ascorbic acid solution at 50, 100, 200 or 500 mg and, separately, diluted acerola juice containing 50 mg ascorbic acid, with blood and urine collected for 6 hours Evidence C source
  Plasma area under the curve higher after acerola juice as a trend, urinary ascorbic acid significantly lower at 1, 2 and 5 hours
• The mechanism proposed for that difference is transporter induction: at 3 mM ascorbic acid, acerola juice raised SVCT1 messenger RNA in Caco-2 cells above plain ascorbic acid. — Caco-2 human intestinal epithelial cells incubated with 3 mM ascorbic acid alone or the same concentration in acerola juice for up to 24 hours Evidence D source
  Intracellular ascorbic acid significantly higher with acerola juice at 2, 3, 4, 8 and 24 hours, with higher SVCT1 messenger RNA; cyanidin-3-glucoside chloride and quercetin alone also raised SVCT1 expression

What cooking and storage change

• Vitamin C is the part of acerola that cooking and storage take: the USDA retention table keeps 70% of it in stewed and in frozen fruit, and only 20% once fruit is dried. — USDA retention factors for the group Fruits and Fruit Juices, which is the group acerola belongs to by its own USDA record Evidence E source
  Vitamin C 70% retained when stewed (Retn_Code 155) and 70% when frozen (Retn_Code 156), against 20% for dried fruit (Retn_Code 158); copper 90% and riboflavin 90% when stewed

What it does to your health

• A systematic review of 14 animal studies of Brazilian berries, acerola among them, graded with the SYRCLE tool for animal research, reported more Lactobacillus and Bifidobacterium and a lower Firmicutes to Bacteroidetes ratio. — fourteen in vivo studies of Brazilian berries including jabuticaba, acai, camu-camu and acerola, risk of bias assessed with the SYRCLE tool for animal research (n = 14 studies) Evidence D source
  Higher Lactobacillus and Bifidobacterium, lower Firmicutes to Bacteroidetes ratio, higher Mucin-2 and Claudin-1 expression and more short-chain fatty acids

Safety, limits and interactions

• One hundred grams of raw acerola carries 1,677.6 mg of vitamin C, which is 84% of the adult upper limit of 2,000 mg a day and more than the whole upper limit for any child under 14. — United States upper intake levels set by the Food and Nutrition Board, applying to food and supplements together Evidence E source
  Upper limit 2,000 mg a day for adults 19 and older including pregnancy and lactation, 1,800 mg at 14 to 18 years, 1,200 mg at 9 to 13, 650 mg at 4 to 8 and 400 mg at 1 to 3
• In hereditary haemochromatosis, chronic consumption of high doses of vitamin C could worsen iron overload and result in tissue damage, a concern the same fact sheet does not raise for healthy people. — people with hereditary haemochromatosis, contrasted with healthy individuals in whom the same concern does not appear to apply Evidence E source
  Excess nonheme iron absorption, iron overload and tissue damage on chronic high doses in haemochromatosis; no such concern identified in healthy people

What people believe that the data does not support

• The antioxidant story is the one thing acerola is sold on, and it is the one thing the European Union refused: the claim naming acerola a major dietary source of antioxidants is non-authorised. — European Union food labelling, claim on acerola Evidence E source
  One entry for acerola in the register, non-authorised, with zero authorised claims
• The trial most often cited for acerola and skin gave 72 women a drink of 2.5 g collagen peptides with acerola extract, vitamin C, zinc, biotin and vitamin E, so none of its result belongs to acerola alone. — 72 healthy women aged 35 or older, randomised to the multi-ingredient drink or placebo for twelve weeks with a four-week follow-up (n = 72) Evidence B source
  Significant improvement in skin hydration, elasticity, roughness and density against placebo for the blend as a whole, with no arm isolating acerola
• The second skin trial has the same shape: 60 women, 12 weeks, and a supplement holding collagen peptides together with acerola extract, vitamin C, vitamin E, biotin and zinc. — 60 healthy female volunteers in a randomised, placebo-controlled, triple-blind trial of a multi-ingredient collagen supplement over 12 weeks (n = 60) Evidence B source
  Significant improvement of facial skin collagen structure on confocal laser scanning microscopy for the blend against placebo, with no arm isolating acerola

What is still unknown

• The third skin study had no control group at all: 50 women took a four-ingredient nutraceutical with a sunscreen for 120 days and everyone improved. — 50 women aged 35 to 60, phototypes I to III, taking a nutraceutical of lycopene, acerola extract, grape seed extract and a marine complex alongside SPF15 sunscreen for 120 days (n = 50) Evidence C source
  Higher skin hydration, lower pH, higher ultrasound density and more collagen and elastic fibres on biopsy, measured against each woman's own baseline
• The only human observational data naming acerola is a dietary survey of 40 people with Parkinson disease in Brazil, where 45% reported eating it. — 40 patients diagnosed with Parkinson disease, 60% male and 52.5% over 60, surveyed with a food frequency questionnaire (n = 40) Evidence C source
  Acerola reported by 45% of patients, behind banana at 60% and fish at 52.5%

The bottom line

The absorption question has been asked once, in a small way. Healthy young Japanese men took 50 mg of vitamin C as diluted acerola juice or as plain ascorbic acid solution. The juice left significantly less ascorbic acid in the urine at 1, 2 and 5 hours, and the plasma curve was higher only as a trend, in a non-randomised comparison whose abstract gives no sample size. A proposed explanation sits in cell culture: in Caco-2 intestinal cells at 3 mM ascorbic acid, acerola juice raised messenger RNA for the SVCT1 transporter above plain ascorbic acid, which is a mechanism offered for a human observation rather than a finding in people. Cooking and drying take the one nutrient the fruit is bought for. USDA retention factors keep 70% of vitamin C when fruit of this group is stewed and 70% when it is frozen, against 20% once it is dried. Those factors are set for the food group and the method rather than for acerola by name, on a table dated 1975. Acerola reaches most people as a powder or a dried extract, which is the worst case in that row. On the gut, the one systematic review that reaches acerola pooled 14 animal studies of Brazilian berries, appraised with the SYRCLE tool for animal research, and reported more Lactobacillus and Bifidobacterium with a lower Firmicutes to Bacteroidetes ratio. No part of that was measured in humans, and acerola is one fruit among several in the pool. The dose is the thing to watch here, and it is watched for children first. The upper intake level for vitamin C set by the Food and Nutrition Board applies to food and supplements together. One hundred grams of raw acerola supplies 1,677.6 mg, which is 84% of the 2,000 mg adult limit and more than the whole limit at any age under 14. That limit is 1,200 mg from 9 to 13 years, 650 mg from 4 to 8 and 400 mg from 1 to 3. The adult limit is the same 2,000 mg in pregnancy and lactation. For one group the load is a named hazard rather than a ceiling. In hereditary haemochromatosis, chronic high vitamin C can worsen iron overload and damage tissue, and the fact sheet that says so names no dose and no duration, while it reports no such concern in healthy people. We found no evidence on acerola and medicines at all. What is left is thin. In a 120-day study, 50 women took a four-ingredient nutraceutical alongside SPF15 sunscreen with no control group, so time and the sunscreen are not separated from the supplement. The only observational data naming the fruit is a food frequency survey of 40 people with Parkinson disease in Brazil, 45% of whom reported eating it. Nobody has run a trial of acerola alone on any health outcome.

Sources

1. acer-r4-11 · USDA FoodData Central SR Legacy, dataset
   Acerola, (west indian cherry), raw (FDC 171686, SR Legacy, Fruits and Fruit Juices): vitamin C 1677.6 mg per 100 g = 1864% DV; copper 0.086 mg = 10% DV; riboflavin 0.06 mg = 5% DV; Foundation samples 0, CoFID match none
   USDA FoodData Central, SR Legacy, FDC 171686 · checked 2026-09-24
2. acer-r4-01 · clinical trial, crossover comparison
   In plasma, the AUC value of ascorbic acid after ingestion of acerola juice tended to be higher than that from ascorbic acid alone. In contrast, the urinary excretion of ascorbic acid at 1, 2 and 5 h after ingestion of acerola juice were significantly less than that of ascorbic acid.
   Biol Pharm Bull, 2011 · checked 2026-09-24
3. acer-r4-02 · cell culture study
   the mRNA expression level of the sodium-dependent vitamin C transporter (SVCT) 1 was significantly higher in the cells incubated with AsA in acerola juice than those incubated with AsA alone
   J Nutr Sci Vitaminol (Tokyo), 2020 · checked 2026-09-24
4. acer-r4-12 · USDA Table of Nutrient Retention Factors, dataset
   USDA-RETN-R6:155 FRUITS,FRESH(NOT CITRUS),STEWED, group Fruits and Fruit Juices: vitamin_c_mg 70% retained, folate_total_ug 50%, thiamin_mg 80%, copper_mg 90%, riboflavin_mg 90%; USDA-RETN-R6:156 FRUITS,FROZEN: vitamin_c_mg 70% retained, copper_mg 90%, thiamin_mg 95%, folate_total_ug 95%; USDA-RETN-R6:158 FRUITS,DRIED: vitamin_c_mg 20% retained, folate_total_ug 50%
   USDA Table of Nutrient Retention Factors, Release 6, 2007, Retn_Codes 155, 156 and 158 · checked 2026-09-24
5. acer-r4-06 · systematic review of animal studies
   Fourteen studies were included, and the risk of bias was assessed using the SYRCLE tool. The main findings indicated improvements in gut microbiota balance, with increased populations of Lactobacillus and Bifidobacterium and a reduction in the Firmicutes/Bacteroidetes ratio.
   Crit Rev Food Sci Nutr, 2026 · checked 2026-09-24
6. acer-r4-03 · fact sheet, expert body position
   The FNB has established ULs for vitamin C that apply to both food and supplement intakes (Table 3) [8]. Long-term intakes of vitamin C above the UL may increase the risk of adverse health effects.
   NIH Office of Dietary Supplements, Vitamin C Fact Sheet for Health Professionals · checked 2026-09-24
7. acer-r4-04 · fact sheet, expert body position
   Due to the enhancement of nonheme iron absorption by vitamin C, a theoretical concern is that high vitamin C intakes might cause excess iron absorption. In healthy individuals, this does not appear to be a concern [8]. However, in individuals with hereditary hemochromatosis, chronic consumption of high doses of vitamin C could exacerbate iron overload and result in tissue damage [4,8].
   NIH Office of Dietary Supplements, Vitamin C Fact Sheet for Health Professionals · checked 2026-09-24
8. acer-r4-05 · regulatory register entry
   POL-HC-6571 Acerola Acerola is a major dietary source of antioxidants Antioxidants from dietary sources contribute to the protection against free radicals which cause cell damage Contributes to the protection of cells and tissues from oxidative damage Help strengthen our bod Non-authorised
   EU Register on nutrition and health claims, claim POL-HC-6571, snapshot 2026-09-21 · checked 2026-09-24
9. acer-r4-07 · randomised controlled trial in humans
   Drinking ampoules provides a blend of 2.5 g of collagen peptides, acerola fruit extract, vitamin C, zinc, biotin, and a native vitamin E complex.
   Nutrients, 2019 · checked 2026-09-24
10. acer-r4-08 · randomised controlled trial in humans
    The purpose of this randomized, placebo-controlled, triple-blind trial on 60 healthy female volunteers was to assess the cosmetic effects on skin quality of a food supplement containing special collagen peptides together with acerola extract, vitamin C, vitamin E, biotin, and zinc after an intake of 12 weeks
    J Med Food, 2020 · checked 2026-09-24
11. acer-r4-09 · longitudinal observational study in humans
    The daily use of a nutraceutical product containing lycopene, acerola extract, grape seed extract and Biomarine ComplexT showed an important adjuvant effect to counteract skin photoaging.
    An Bras Dermatol, 2012 · checked 2026-09-24
12. acer-r4-10 · cross-sectional study in humans
    About food consumption, the most common foods were banana (60%), fish (52.5%), acerola (45%), and orange (32%).
    Arq Neuropsiquiatr, 2021 · checked 2026-09-24