This Now foods product (AHCC) was a real life saver for me. I had developed a severe case of canker sores in my mouth - on my tongue, and some parts of my gumline). It was excruciatingly painful. I used AHCC to boost my immune system. I had a couple of small lumps in my lymph nodes under my jaw/chin. After taking this product for 5 days, twice a day, the lumps were gone. I will definitely be re-ordering to keep on hand. iherb's prices were unbeatable compaed to other online stores, and they were prompt in getting the product to me.