- What other names is Lentinan known by?
- What is Lentinan?
- How does Lentinan work?
- Are there safety concerns?
- Dosing considerations for Lentinan.
Lentinan is a substance that comes from the shiitake mushroom.
Medical professionals use lentinan to boost the effects of regular medicines used for treating cancer and HIV infection. They give lentinan intravenously (by IV) or as a shot (by injection).
Possibly Effective for...
- Treatment of HIV infection, when given with the medication didanosine (ddI, Videx).
Insufficient Evidence to Rate Effectiveness for...
- Breast cancer, when given by injection. Developing evidence suggests that lentinan may improve the way regular cancer drugs work in people with breast cancer.
- Stomach cancer, when given by injection. Developing evidence suggests that lentinan may improve the way regular cancer drugs work in people with stomach cancer. However, lentinan seems less likely to work in stomach cancer patients who are malnourished.
- Prostate cancer, when given by injection. Developing evidence suggests that lentinan may improve the way regular cancer drugs work in men with prostate cancer.
- Other conditions.
Quick GuideHIV AIDS Facts: Symptoms and Treatments

Lentinan might increase the effects of certain medications that fight viruses and cancer. It might also increase the activity of some of the body's defense (immune) cells.
There isn't enough information available to know if lentinan is safe. It might cause stomach and intestinal cramps, rash, muscle pain, and tiredness; and it can slow blood clotting.
The following doses have been studied in scientific research:
BY INJECTION:
There isn't enough information available to know if lentinan is safe. It might cause stomach and intestinal cramps, rash, muscle pain, and tiredness; and it can slow blood clotting.
Special Precautions & Warnings:
Pregnancy and breast-feeding: Not enough is known about the use of lentinan during pregnancy and breast-feeding. Stay on the safe side and avoid use.The following doses have been studied in scientific research:
BY INJECTION:
- Healthcare providers give lentinan as a shot to strengthen the immune system in patients with HIV/AIDS.
Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).

Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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Last Editorial Review: 3/29/2011