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AHCC

Supplement mushroom extract immune
Aka: active hexose correlated compound
Brands seen in Singapore: Quality of Life, American Biosciences, Protocol for Life Balance
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Immune function — evidence is one small phase II trial
Take with
Empty stomach · how the published trial dosed it
Studied for
The trial ran 6 months of once-daily use
Pros & cons
Pros
  • 3 g once daily was well tolerated in the trial
  • The one human trial ran a full 6 months
Cons
  • Evidence is one small phase II trial
  • The trial was in women with persistent hpv
  • HSA's numeric limits cover vitamins/minerals only
Sources
  1. AHCC® Supplementation to Support Immune Function to Clear Persistent HPV Infections (Smith et al., Front Oncol 2022) · read 2026-08-27
    what it says
    “AHCC supplementation of 3 g by mouth on an empty stomach once daily for 6 months … this phase II study demonstrated that AHCC 3 g once daily was effective … to eliminate persistent HPV infections and was well tolerated”
  2. Smith et al., Front Oncol 2022 — same trial, eligibility/exclusion criteria · read 2026-08-27
    what it says
    “Women with immunosuppressive conditions (i.e., HIV+ and rheumatoid arthritis) or taking immune modulation mediations (i.e., immunosuppressants). • Women currently taking other immune-modulating nutritional supplements.”
  3. HSA — Health Supplements Guidelines (Jan 2026), Tables 4–5 vitamin and mineral limits · read 2026-08-27
    what it says
    “HS for use by the general adult population should not contain vitamins and minerals exceeding the stipulated limits stated in Tables 4 and 5.”
  4. HSA — Guidelines on Prohibited and Restricted Ingredients in Health Supplements and Traditional Medicines (Oct 2025) · read 2026-08-27
    what it says
    “The objective of this guideline is to highlight the substances of concern when used in HS and TM and is not meant to be an exhaustive list.”
  5. iHerb Singapore — AHCC category page · read 2026-08-27
    what it says
    “AHCC for Immune Health | iHerb”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.