Acerola
Acerola (Malpighia glabra), also called the Barbados or West Indies cherry, is a small tropical fruit with one of the highest vitamin C contents of any food by weight. Acerola fruit powder is widely used in supplements as a natural source of vitamin C.
Camden Medicals editorial · Last reviewed 11 June 2026 · Next review June 2027
- Cross-checked against
- NHS
- NICE
- BNF
- EFSA
- FSA
Camden's editorial team independently graded each health claim below on the strength of the published evidence — see the grade beside every condition.
- Class
- Botanical
- Typical daily dose
- Acerola is dosed for the vitamin C it provides. UK adult vitamin C RNI is 40 mg/day.
- Top use evidence
- Moderate
On this page
What it is
Acerola (Malpighia glabra, sometimes M. emarginata) is a small red tropical fruit native to the Caribbean and parts of Central and South America. It is among the densest dietary sources of vitamin C by weight — fresh fruit can contain over 1,500 mg of vitamin C per 100 g.
In supplements, acerola appears as a freeze-dried fruit powder or as a standardised extract. The commercial powder is typically standardised to a stated vitamin C percentage (often 17–25%); the resulting per-dose vitamin C content is what determines whether the supplement meets the UK NRV threshold for vitamin C health claims.
Acerola also contains other plant compounds — anthocyanins, carotenoids, polyphenols — at much smaller absolute amounts.
At a glance
- Tropical fruit with very high vitamin C content per gram of fresh fruit.
- Used in supplements as a natural source of vitamin C.
- UK authorised health claims attach to vitamin C, not to acerola itself.
- Whether "natural" vitamin C from acerola is more bioavailable than synthetic ascorbic acid is overstated by marketing — at steady-state in human trials the difference is negligible (Carr & Vissers 2013).
What people use it for
People who prefer a natural-source vitamin C supplement
Acerola provides vitamin C in a fruit-derived matrix. The vitamin C content is what counts toward the UK NRV. [1]
Some evidenceModeratePeople sensitive to high doses of pure synthetic ascorbic acid
Acerola-based supplements typically deliver lower per-serving vitamin C than megadose synthetic products. Some people find them gentler on the stomach. There is no specific UK guidance on this point.
Some evidenceLimited
How it works
The mechanism is the vitamin C mechanism: vitamin C is a water-soluble antioxidant required as a co-factor for collagen synthesis and various enzymatic reactions, and it supports iron absorption from non-haem sources. See the vitamin-c entry for the detail.
Common myths
Myth"Acerola has more vitamin C than oranges, so a small acerola supplement equals a lot of orange juice"
RealityAcerola fruit by fresh weight is much denser in vitamin C than oranges. But supplement servings of acerola powder are small, so the per-serving vitamin C delivered is what matters — not the ratio in the fresh fruit.
Myth"Whole-food vitamin C is dramatically more bioavailable than synthetic ascorbic acid"
RealitySteady-state bioavailability is essentially equivalent between synthetic and food-derived L-ascorbic acid in human trials. Small, transient pharmacokinetic differences have been described but are negligible at nutritional doses (Carr & Vissers 2013). [5]
Myth"Acerola powder and acerola extract deliver the same amount of vitamin C"
RealityThey are very different. Unstandardised whole-fruit acerola powder carries roughly 2–4% vitamin C by mass (depending on processing). Standardised extracts are concentrated to a stated 17%, 25%, or higher. A 100 mg dose can therefore deliver anywhere from ~3 mg to ~25 mg of vitamin C — read the per-serving vitamin C content, not the milligrams of "acerola".
Common online questions
Synthesised from the questions UK shoppers most often ask online about Acerola. Each answer is editorial and links to its evidence in the Sources list below.
Is acerola vitamin C better absorbed than synthetic ascorbic acid?
At nutritional doses (40–500 mg/day), no clinically meaningful difference. The vitamin C molecule itself (L-ascorbic acid) is identical regardless of source. Steady-state human studies (Carr & Vissers 2013, Nutrients) show essentially equivalent bioavailability between food-derived and synthetic vitamin C. Small, transient pharmacokinetic differences have been described but are negligible in practical terms. If you prefer a fruit-derived source for personal reasons, that is fine — do not pay a large premium for a bioavailability claim that the evidence does not support. [5]
How much vitamin C does an acerola supplement actually contain?
It depends entirely on the standardisation. Unstandardised whole-fruit acerola powder carries roughly 2–4% vitamin C by mass. Standardised extracts are concentrated to a stated 17% or 25%. So a 100 mg dose of acerola powder can deliver anywhere from ~3 mg to ~25 mg of vitamin C. Always read the per-serving vitamin C content (in mg and as a % of the UK Reference Nutrient Intake), not the milligrams of "acerola".
Why is acerola often combined with other ingredients in supplements?
Acerola is most often used in supplements as a vitamin C source — so it appears in formulations targeting immunity, collagen, skin, or general antioxidant adequacy. It is rarely sold as a standalone product because the per-mg vitamin C is lower than a synthetic ascorbic acid tablet, so its commercial role is usually as the "natural source" component within a broader formulation.
Acerola vs camu camu — what's the difference?
Both are South American fruits with very high natural vitamin C content. Acerola (Malpighia emarginata, West Indian cherry) is more widely cultivated and supplemented; camu camu (Myrciaria dubia) carries even higher vitamin C levels per fresh fruit weight. From a nutritional standpoint at supplement doses, the choice is essentially a sourcing / preference question — both deliver vitamin C; both also carry small amounts of plant polyphenols.
Is acerola safe in pregnancy?
Acerola at supplement doses that deliver vitamin C around the UK adult RNI (40 mg/day) — and the slightly raised pregnancy figure of 50 mg/day — is generally regarded as safe. Avoid high-dose acerola extracts (delivering >500 mg/day vitamin C) in pregnancy without your midwife or GP''s advice — that is a vitamin C dose question, not an acerola question. Acerola as a fruit in food has a long history of safe consumption. [1]
⚖️ The official position
What may lawfully be claimed about Acerola in Great Britain. This is a regulatory position, not an evidence grade.
A health claim is authorised in Great Britain.
“Vitamin C contributes to the normal function of the immune system”
“Vitamin C contributes to the protection of cells from oxidative stress”
“Vitamin C contributes to the reduction of tiredness and fatigue”
This claim is authorised for use in Great Britain under the GB Nutrition and Health Claims regulation. A product may carry it when it provides at least 15% of the UK NRV per recommended daily portion.
Authorised UK health claims
Verbatim from the GB Nutrition and Health Claims Register (Reg 432/2012 as assimilated in GB). A product can carry these claims when it provides at least 15% of the UK NRV per recommended daily portion.
3 authorised claims — show / hide
- "Vitamin C contributes to the normal function of the immune system"
- "Vitamin C contributes to the protection of cells from oxidative stress"
- "Vitamin C contributes to the reduction of tiredness and fatigue"
Camden guides citing Acerola
Editorial pieces from the Camden blog that reference Acerola. Each guide cites the evidence it draws on.
🔬 Camden’s evidence review
The research Camden reviewed, graded on its strength. This is our own appraisal — it sits beneath the official guidance above, never above it.
Vitamin C adequacy
StrongEvidencestrongAcerola is a recognised dietary source of vitamin C. Its contribution to vitamin C intake follows standard vitamin C nutrition science. [1]
Vitamin C bioavailability — natural source vs synthetic ascorbic acid
LimitedEvidencelimitedSteady-state bioavailability studies in humans (Carr & Vissers 2013; Nutrients) have consistently shown no clinically meaningful difference between synthetic and food-derived L-ascorbic acid. Small, transient pharmacokinetic differences have been reported but are unlikely to matter at nutritional doses. [5]
Safety
Acerola is a fruit-derived source of vitamin C and is well tolerated at typical supplement doses. Safety follows the vitamin C profile in proportion to the vitamin C delivered per serving.
Talk to your pharmacist or GP first if you:
- You have a known fruit allergy in the Malpighiaceae family or latex-fruit syndrome.
- The acerola dose delivers more than ~500 mg of vitamin C per day — at that point, the vitamin C interaction list applies (haemochromatosis, warfarin, kidney-stone history). See the vitamin C entry for detail.
- You are pregnant or breastfeeding — food-dose acerola is fine; high-dose extracts have insufficient data.
Common side effects: Rare at typical supplemental doses. Allergic reactions in people with specific fruit allergies.
Pregnancy and breastfeeding
Acerola at supplement doses (delivering vitamin C around or below the UK pregnancy RNI) is generally regarded as safe. Vitamin C requirements in UK pregnancy are 50 mg/day (RNI rises slightly from 40 mg). As with any supplement, talk to your pharmacist, GP, or midwife before starting.
NHS UK lactation vitamin C RNI is 70 mg/day.
Talk to your GP, midwife, or pharmacist before starting any supplement during pregnancy or breastfeeding.
More clinical detail (for clinicians and informed readers)
Contraindications
- Known acerola or related-species allergy.
Drug interactions
- See vitamin-c — drug interactions of vitamin C apply to acerola in proportion to the vitamin C delivered.
This is not an exhaustive list. Always tell your prescriber and pharmacist about every supplement you take.
Common side effects
- Generally well tolerated. Acerola itself is a food.
Rare side effects
- Allergic reactions in people with specific fruit allergies.
How to take it
- Typical supplemental range
- Acerola is dosed for the vitamin C it provides. UK adult vitamin C RNI is 40 mg/day.
- Timing
- Anytime — vitamin C is water-soluble.
How to spot quality
Look for
- Vitamin C content per serving stated explicitly (mg + % NRV).
- Standardisation percentage stated (e.g. "Acerola fruit powder, 17% vitamin C").
- GMP-certified manufacture; ideally third-party testing.
- Country of cultivation disclosed.
Red flags
- Vague "Acerola extract" claims with no vitamin C content stated.
- Claims that acerola is "more concentrated" than other vitamin C sources without specifying the per-serving content.
- Combined "immune support" claims that mix authorised vitamin C wording with botanical claims (the latter are not authorised).
Where Camden lands · meets the bar
Camden's NB-503 (Lion's Mane Extract with Acerola) declares 75 mg of acerola fruit powder per capsule, providing 12.75 mg of vitamin C (16% NRV per capsule). NB-502 (Mushroom Complex) provides a similar acerola contribution. Vitamin C content is declared explicitly with mg and % NRV — meeting the encyclopaedia look-for bar.
Commonly combined with
Other ingredients that share a biological pathway, cofactor relationship, or evidence-backed protocol with this one. Mechanisms below cite primary physiology — not folk pairing. Doses are literature ranges, not recommendations. Talk to your pharmacist or GP before changing your stack, especially if you take prescription medication.
Vitamin C
Moderate evidenceVitamin C source cluster — acerola is a natural high-vitamin-C fruit; UK Article 13.1 vitamin C claim cluster.
Acerola (Malpighia glabra / emarginata) contains 1500-4500 mg vitamin C per 100 g fresh fruit. UK Article 13.1 vitamin C claims attach to vitamin C content.
Evidence: UK Article 13.1 vitamin C claims authorised. Camden NB-553 Vitamin C Acerola. [2]
Doses studied: Acerola extract delivering 80-1000 mg vitamin C daily.
Found in Camden: Purifera™ Vitamin C Acerola Immune Complex 120 Capsules
Rosehip (Rosa canina)
Limited evidenceNatural-vitamin-C source cluster — both deliver vitamin C in food-matrix context.
Acerola + rosehip both natural vitamin C sources with bioflavonoid context. Similar regulatory positioning.
Evidence: Vitamin C food-source cluster.
Doses studied: Food / supplement-tier intake.