AHCC

Common Names

  • Active Hexose Correlated Compound

For Patients & Caregivers

AHCC appears to have immunomodulatory and anticancer effects, but large human studies are lacking.

Active hexose correlated compound (AHCC) is an extract of mushrooms from the Basidiomycete class, including shiitake mushrooms. This product contains polysaccharides called glucans, which scientists think are responsible for its biological activity. 

Lab studies suggest AHCC may enhance the activity of some types of immune cells. Animal studies suggest that AHCC has antioxidant and anti-inflammatory effects, and may improve immune system response in mice with chemotherapy-weakened immune systems. In a few human studies, AHCC improved liver function in patients with hepatocellular carcinoma and cirrhosis, and reduced blood levels of some tumor markers.

To prevent and treat cancer
Laboratory experiments suggest anticancer activity. A clinical study supported the use of AHCC in patients undergoing surgical resection of hepatocellular carcinoma, but another study found it ineffective for early stage prostate cancer. More research is needed.

  • You are taking drugs that are substrates of Cytochrome P450 2D6: Lab studies suggest AHCC may make these drugs less effective. Clinical significance is not known.
  • Diarrhea and itching have been reported in patients following consumption of AHCC.
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For Healthcare Professionals

Active hexose correlated compound (AHCC) is a proprietary product prepared from co-cultured mycelia of several species of Basidiomycete mushrooms, including shiitake (Lentinus edodes). AHCC is extracted using hot water following an enzyme pretreatment, but the specific mushroom source and procedural details have not been fully disclosed. Patients use AHCC to prevent and treat cancer.

Animal models suggest that AHCC has antioxidant effects and may protect against disorders induced by oxidative stress (1). It also enhanced resistance against bacterial (3) and viral infections (4), and has anti-inflammatory effects against colitis (20). In healthy human subjects, AHCC improved T-cell immune responses (5), increased dendritic cell number and function (6), and improved antibody response to influenza vaccine (21).

Preclinical findings suggest anticancer effects (7) (8) (29). In cisplatin-treated mice, AHCC increased antitumor activity while reducing side effects (9), and showed synergistic effects with gemcitabine in pancreatic cancer cells (22). In humans, findings from a prospective cohort study suggest AHCC improved prognosis after curative resection of hepatocellular carcinoma (10). AHCC may also reduce chemotherapy-associated adverse effects in patients with advanced cancer (23), and in those with pancreatic ductal adenocarcinoma (PDAC) (25). However, an open-label multicenter study of patients with early stage prostate cancer found AHCC was ineffective in reducing prostate-specific antigen levels by 50% or more (11). Further research is needed.

  • Cancer prevention
  • Cancer treatment

AHCC glucans are low molecular weight (~5 KDa) polysaccharides with alpha-1,3 linkages. Both properties are unusual for this class of compounds with reported immunomodulatory properties (7). One of the proposed mechanisms includes orchestrating immune response and maintaining immune homeostasis in part by priming TLR-2 and TLR-4 (toll-like receptor) gates at the intestinal epithelium (24). AHCC enhanced natural killer (NK) cell activity to induce endogenous IL-12 in mice (8), and improve murine response to influenza infection (15). In other animal studies, AHCC protected against disorders induced by oxidative stress (1), increased resistance to West Nile virus by improving T-cell response (16), and increased resistance to bacterial infection (3), perhaps by increasing inflammatory cytokine and chemokine expression as well as lymphocytes (13).

Studies in healthy older humans suggest AHCC may enhance CD4(+) and CD8(+) T cell immune response (19). In patients with hepatocellular carcinoma and cirrhosis, beneficial effects on liver function (10) may occur via regulation of nitric oxide production (14).

In tumor tissue, AHCC enhanced antitumor effects of 5-fluorouracil by enhancing apoptosis, upregulating expression of BCl-2 associated X protein, and downregulating B cell lymphoma 2 (26). Proposed mechanisms for overcoming drug resistance in cancer cells include downregulation of Heat Shock Factor 1, which induces heat shock protein HSP27, known to be involved in gemcitabine resistance in pancreatic cancer cells (27).

  • Diarrhea and itching have been reported in patients following consumption of AHCC  (11).

Cytochrome P450 substrates: AHCC induces CYP450 2D6, which may decrease the activity of substrate drugs such as doxorubicin or ondansetron. Clinical significance is not known (12).
Aromatase inhibitors: AHCC induces aromatase and may reduce activity of aromatase inhibitor drugs such as letrozole. Clinical relevance has not been determined (28).


  1. Ikeda T, Ishibashi H, Fujisaki R, et al. Prophylactic efficacy of a basidiomycetes preparation AHCC against lethal Candida albicans infection in experimental granulocytopenic mice. Nippon Ishinkin Gakkai Zasshi. 2003;44(2):127-131.

  2. Kidd PM. The use of mushroom glucans and proteoglycans in cancer treatment. Altern Med Rev. Feb 2000;5(1):4-27.

  3. Yagita A, Maruyama S, Wakasugi S, Sukegawa Y. H-2 haplotype-dependent serum IL-12 production in tumor-bearing mice treated with various mycelial extracts. In Vivo. Jan-Feb 2002;16(1):49-54.

  4. Hirose A, Sato E, Fujii H, Sun B, Nishioka H, Aruoma OI. The influence of active hexose correlated compound (AHCC) on cisplatin-evoked chemotherapeutic and side effects in tumor-bearing mice. Toxicol Appl Pharmacol. Jul 15 2007;222(2):152-158.

  5. Aviles H, O’Donnell P, Orshal J, Fujii H, Sun B, Sonnenfeld G. Active hexose correlated compound activates immune function to decrease bacterial load in a murine model of intramuscular infection. Am J Surg. Apr 2008;195(4):537-545.

  6. Matsui K, Kawaguchi Y, Ozaki T, et al. Effect of active hexose correlated compound on the production of nitric oxide in hepatocytes. JPEN J Parenter Enteral Nutr. Sep-Oct 2007;31(5):373-380; discussion 380-371.

  7. Shigama K, Nakaya A, Wakame K, Nishioka H, Fujii H. Alleviating effect of active hexose correlated compound (AHCC) for anticancer drug-induced side effects in non-tumor-bearing mice. J Exp Ther Oncol. 2009;8(1):43-51.

  8. Mascaraque C, Suárez MD, Zarzuelo A, Sánchez de Medina F, Martínez-Augustin O. Active hexose correlated compound exerts therapeutic effects in lymphocyte driven colitis. Mol Nutr Food Res. 2014 Dec;58(12):2379-82.

  9. Mathew L, Gaikwad A, Gonzalez A, et al. Evaluation of Active Hexose Correlated Compound (AHCC) in Combination With Anticancer Hormones in Orthotopic Breast Cancer Models. Integr Cancer Ther. 2017 Apr 1:1534735417704948. doi: 10.1177/1534735417704948.

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