I found this on the Sloan-Kettering site.
Derived from the rhizome and root. This supplement is routinely used as a spice and coloring agent. Oral administration is well tolerated, but bioavailability is relatively low
(5) (15). Following absorption, turmeric is rapidly metabolized. In vitro and animal studies suggest anti-proliferative and preventative effects of turmeric against cancer (
10) (
11) (
12) (
13) (
16) (
17). Results from a pilot study indicate that it may help alleviate symptoms of irritable bowel syndrome (
14). No significant adverse events have been reported. Patients with gastrointestinal disorders should not take this supplement. Recent animal studies indicate that dietary turmeric may inhibit the anti-tumor action of chemotherapeutic agents such as cyclophosphamide in treating breast cancer (
3). More research is necessary, but it may be advisable for breast cancer patients undergoing chemotherapy to limit intake of turmeric and turmeric-containing foods. Data from an epidemiological study are suggestive of improved cognitive performance in elderly Asians who consumed turmeric in the form of curry powder (
18).
http://www.mskcc.org/mskcc/html/69401.cfm
Those of you taking Tumeric as a dietary supplement or herb, are you still having Herceptin treatments? I have taken a few capsules but now wonder if I should back away until my treatments are completed.
Thanks,
Dana