Acai Berry

Purported Benefits, Side Effects & More

Acai Berry

Purported Benefits, Side Effects & More
Acai Berry

Common Names

  • Acai berry
  • Acai palm
  • Cabbage palm
  • Palm berry

For Patients & Caregivers

Tell your healthcare providers about any dietary supplements you’re taking, such as herbs, vitamins, minerals, and natural or home remedies. This will help them manage your care and keep you safe.

What is it?

Acai has antioxidant effects, but it has not been shown to treat or prevent cancer.

Acai is the fruit of a palm mainly found in South America. The berries and seeds contain compounds called flavonoids that have antioxidant effects. Some laboratory studies suggest acai may reduce cholesterol, prevent diseases of the heart and blood vessels, and cause programmed cell death in leukemia cells. However, human studies are needed to confirm these effects.

Consumption of contaminated acai fruit with insects carrying Trypanosoma cruzii, a protozoan that causes Chagas disease, resulted in 178 cases of acute disease.

What are the potential uses and benefits?
  • To prevent cancer
    Preclinical studies suggest that flavonoids present in acai fruit have antioxidant properties. However, there are no human studies to suggest that acai can help prevent cancer.
  • To prevent heart disease and stroke
    In vitro studies show that acai fruit may be useful, but human data are lacking.
What else do I need to know?

Patient Warnings:

Drinking unprocessed acai juice should be avoided, as it has been linked to an illness called Chagas disease.

Special Point:

Theoretically, acai may interfere with the actions of certain chemotherapy drugs due to its antioxidant effects.

For Healthcare Professionals

Scientific Name
Euterpe oleraceae
Clinical Summary

Acai is the fruit of a palm tree native to South America. It is consumed as food and used in traditional medicine. The pulp and skin of acai fruit are rich in anthocyanins, proanthocyanidins, and fatty acids (1). It is marketed as a dietary supplement to lower cholesterol, support heart health, and for its antioxidant properties.

Preclinical experiments suggest acai has anti-inflammatory (11), antioxidant (10), proapoptotic (2) (17), antitumorigenic (18), atheroprotective (13), and anticancer (21) effects. An acai extract inhibited beta-amyloid inhibition, which suggests it may also have neuroprotective activity (19). In a murine model, nasal administration of acai polysaccharides potentiated innate immunity against pulmonary infections (16). Other animal studies suggest oral acai extract may help prevent exercise intolerance, cardiac hypertrophy, and dysfunction in rats with myocardial infarction (20).

Limited clinical studies suggest improvements in biomarkers of inflammation and oxidative stress in individuals with metabolic syndrome (22), tinnitus (26) and vascular function in overweight adults (23) (27).  Other preliminary data suggest an acai juice product may lengthen prostate specific antigen PSA doubling time in patients with recurrent prostate cancer (24). However, these observations need confirmation in larger well-designed studies (28).

Acai protected against chemo-induced cardiotoxicity in murine models (29). But because of its antioxidant effects, acai may interfere with the actions of certain chemotherapy drugs. Consumption of contaminated acai fruit with insects carrying Trypanosoma cruzii, a protozoan that causes Chagas disease, resulted in 178 cases of acute disease (12).

Purported Uses and Benefits
  • Cancer
  • Heart disease
  • Stroke
Mechanism of Action

Antioxidant properties of acai (5) (6) have been related to scavenging reactive oxygen species (7). It also protected human vascular endothelial cells against oxidative stress and inflammation, downregulated IL-6 and -8 expression at mRNA and protein levels, and inhibited gene expression of adhesion molecules and NF-κB activation (14). Anti-inflammatory effects may occur via NO or COX inhibition (5) (8). In a diabetic murine model, an acai seed extract protected against hepatic steatosis by reducing hepatic lipogenesis and increasing antioxidant defense and cholesterol excretion (25).

Apoptosis in HL-60 leukemia cells with acai may occur through caspase 3 activation (2). Cytotoxic effects on various malignant cell lines were attributed to increased expression of LC3BII, a protein marker of auto-phagosome formation (18).


Drinking unprocessed acai juice should be avoided, as it has been linked to outbreaks of Chagas disease (12).

Herb-Drug Interactions
  • Theoretically, acai may interfere with the actions of certain chemotherapy drugs due to its antioxidant effects.
  • Atorvastatin: Concurrent use of acai decreased the Cmax of Atorvastatin in a murine model. Clinical relevance is not known (30).
  • Alogliptin: Simultaneous use of acai elevated the Cmax of Alogliptin in a murine model. Clinical relevance has yet to be determined  (30).
  • Empagliflozin: Concurrent use of acai increased the Cmax in a murine model. Clinical relevance is not known (30).
Dosage (OneMSK Only)
  1. Schauss AG, Wu X, Prior L, et al. Phytochemical and nutrient composition of the freeze-dried amazonian palm berry, Euterpe oleraceae mart. (acai). J Agric Food Chem 2006;54(22): 8598-603.
  2. Del Pozo-Insfran D, Percival SS, Talcott ST. Acai (Euterpe oleracea Mart.) polyphenolics in their glycoside and aglycone forms induce apoptosis of HL-60 leukemia cells. J Agric Food Chem 2006;54(4):1222-9.
  3. Wang H, Cao G, Prior RL. Total Antioxidant Capacity of Fruits. J Agric Food Chem 1996;44(3):701-705.
  4. Plotkin MJ, Balick MJ. Medicinal uses of South American palms. J Ethnopharmacol 1984;10(2):157-79.
  5. Schauss AG, Wu X, Prior RL, et al. Antioxidant capacity and other bioactivities of the freeze-dried Amazonian palm berry, Euterpe oleraceae mart. (acai). J Agric Food Chem 2006;54(22): 8604-10.
  6. Rodrigues RB, Lichtenthaler R,Zimmermann BF, et al. Total oxidant scavenging capacity of Euterpe oleracea Mart. (acai) seeds and identification of their polyphenolic compounds. J Agric Food Chem 2006; 54(12):4162-7.
  7. Hassimotto NM, Genovese MI, Lajolo FM. Antioxidant activity of dietary fruits, vegetables, and commercial frozen fruit pulps. J Agric Food Chem 2005;53(8):2928-35.
  8. Matheus ME, de Oliveira Fernandes SB, Silvera CS, et al. Inhibitory effects of Euterpe oleracea Mart. on nitric oxide production and iNOS expression. J Ethnopharmacol 2006;107(2):291-6.
  9. Pacheco-Palencia LA, Talcott ST. et al. Absorption and biological activity of phytochemical-rich extracts from açai (Euterpe oleracea Mart.) pulp and oil in vitro. J Agric Food Chem. 2008 May 28;56(10):3593-600.
  10. Mertens-Talcott SU, Rios J, Jilma-Stohlawetz P, Pacheco-Palencia LA, et al. Pharmacokinetics of anthocyanins and antioxidant effects after the consumption of anthocyanin-rich acai juice and pulp (Euterpe oleracea Mart.) in human healthy volunteers. J Agric Food Chem. 2008 Sep 10;56(17):7796-802.
  11. Jensen GS, Wu X, Patterson KM, Barnes J. et al. In vitro and in vivo antioxidant and anti-inflammatory capacities of an antioxidant-rich fruit and berry juice blend. Results of a pilot and randomized, double-blinded, placebo-controlled, crossover study. J Agric Food Chem. 2008 Sep 24;56(18):8326-33.
  12. Nóbrega AA, Garcia MH, Tatto E, et al. Oral transmission of Chagas disease by consumption of açaí palm fruit, Brazil. Emerg Infect Dis. 2009 Apr;15(4):653-5.
  13. Xie C, Kang J, Burris R, et al. Açaí juice attenuates atherosclerosis in ApoE deficient mice through antioxidant and anti-inflammatory activities. Atherosclerosis. 2011 Jun;216(2):327-33.
  14. Noratto GD, Angel-Morales G, Talcott ST, et al. Polyphenolics from açaí (Euterpe oleracea Mart.) and red muscadine grape (Vitis rotundifolia) protect human umbilical vascular Endothelial cells (HUVEC) from glucose- and lipopolysaccharide (LPS)-induced inflammation and target microRNA-126. J Agric Food Chem. 2011;59(14):7999-8012.
  15. Moura RS, Ferreira TS, Lopes AA, et al. Effects of Euterpe oleracea Mart. (AÇAÍ) extract in acute lung inflammation induced by cigarette smoke in the mouse. Phytomedicine. 2012 Feb 15;19(3-4):262-9.
  16. Skyberg JA, Rollins MF, Holderness JS, et al. Nasal Acai polysaccharides potentiate innate immunity to protect against pulmonary Francisella tularensis and Burkholderia pseudomallei Infections. PLoS Pathog. 2012 Mar;8(3):e1002587.
  17. Dias MM, Noratto G, Martino HS, et al. Pro-apoptotic activities of polyphenolics from açai (Euterpe oleracea Martius) in human SW-480 colon cancer cells. Nutr Cancer. 2014;66(8):1394-405.
  18. Silva DF, Vidal FC, Santos D, Costa MC, et al. Cytotoxic effects of Euterpe oleracea Mart. in malignant cell lines. BMC Complement Altern Med. 2014 May 29;14:175.
  19. Wong DY, Musgrave IF, Harvey BS, Smid SD. Açaí (Euterpe oleraceae Mart.) berry extract exerts neuroprotective effects against β-amyloid exposure in vitro. Neurosci Lett. 2013 Nov 27;556:221-6.
  20. Zapata-Sudo G, da Silva JS, Pereira SL, Souza PJ, de Moura RS, Sudo RT. Oral treatment with Euterpe oleracea Mart. (açaí) extract improves cardiac dysfunction and exercise intolerance in rats subjected to myocardial infarction. BMC Complement Altern Med. 2014 Jul 8;14:227.
  21. Alessandra-Perini J, Rodrigues-Baptista KC, Machado DE, Nasciutti LE, Perini JA. Anticancer potential, molecular mechanisms and toxicity of Euterpe oleracea extract (açaí): A systematic review. PLoS One. 2018 Jul 2;13(7):e0200101.
  22. Kim H, Simbo SY, Fang C, et al. Açaí (Euterpe oleracea Mart.) beverage consumption improves biomarkers for inflammation but not glucose- or lipid-metabolism in individuals with metabolic syndrome in a randomized, double-blinded, placebo-controlled clinical trial. Food Funct. 2018 Jun 20;9(6):3097-3103.
  23. Alqurashi RM, Galante LA, Rowland IR, Spencer JP, Commane DM. Consumption of a flavonoid-rich açai meal is associated with acute improvements in vascular function and a reduction in total oxidative status in healthy overweight men. Am J Clin Nutr. 2016 Nov;104(5):1227-1235.
  24. Kessler ER, Su LJ, Gao D, et al. Phase II Trial of Acai Juice Product in Biochemically Recurrent Prostate Cancer. Integr Cancer Ther. 2018 Dec;17(4):1103-1108.
  25. de Bem GF, da Costa CA, da Silva Cristino Cordeiro V, et al. Euterpe oleracea Mart. (açaí) seed extract associated with exercise training reduces hepatic steatosis in type 2 diabetic male rats. J Nutr Biochem. 2018 Feb;52:70-81.
  26. Oppitz SJ, Garcia MV, Bruno RS, et al. Supplementation with açaí (Euterpe Oleracea Martius) for the treatment of chronic tinnitus: effects on perception, anxiety levels and oxidative metabolism biomarkers. Codas.2022 Jan 26;34(4):e20210076.
  27. Arisi TOP, Gorski F, Eibel B, Barbosa E, Boll L, Waclawovsky G, Lehnen AM. Dietary intake of anthocyanins improves arterial stiffness, but not endothelial function, in volunteers with excess weight: A randomized clinical trial.  Phytother Res. 2023 Mar;37(3):798-808.
  28. Baptista SL, Copetti CLK, Cardoso AL, Di Pietro PF. Biological activities of açaí (Euterpe oleracea Mart.) and juçara (Euterpe edulis Mart.) intake in humans: an integrative review of clinical trials.  Nutr Rev. 2021 Nov 10;79(12):1375-1391.
  29. Alessandra-Perini J, Machado DE, Palmero CY, et al. Euterpe oleracea extract (açaí) exhibits cardioprotective effects after chemotherapy treatment in a breast cancer model. . BMC Complement Med Ther. 2023 Aug 25;23(1):301.
  30. Nanjappan SK, Somabattini RA, Ravichandiran V. Investigation of the effect of Acai berry on the pharmacokinetics of Atorvastatin, Alogliptin and Empagliflozin: a herb-drug interaction study.  J Pharm Pharmacol. 2022 Aug 19;74(8):1125-1132. 
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