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Clinical studies with curcumin.

Chih-Hung Hsu¹, Ann-Lii Cheng

¹Department of Oncology, National Taiwan University Hospital, Taipei. chih@ha.mc.ntu.edu.tw

Advances in Experimental Medicine and Biology

|June 16, 2007

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Curcumin shows potential for treating various diseases due to its anti-inflammatory and antioxidant properties. While generally safe, further clinical trials are needed to confirm its efficacy and optimize delivery methods for better bioavailability.

Area of Science:

Pharmacology and Therapeutics
Natural Product Chemistry
Clinical Medicine

Background:

Curcumin, derived from turmeric, possesses documented antioxidative, anti-inflammatory, and anticancer properties.
It is investigated for potential therapeutic and preventive roles in major human diseases.

Purpose of the Study:

To review the safety, bioavailability, and preliminary efficacy of curcumin in various human diseases.
To identify areas for future research, including improved formulations and administration routes.

Main Methods:

Review of phase I clinical studies and pharmacokinetic data for curcumin.
Analysis of preliminary clinical data from patients with rheumatoid arthritis, inflammatory conditions, and cancers.

Main Results:

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Phase I studies indicate curcumin is well-tolerated at high doses (up to 8000 mg/day) with mild side effects (nausea, diarrhea).
Oral curcumin exhibits low bioavailability, but therapeutic concentrations may be achieved in colorectal tissue and topically exposed tissues.
Preliminary data suggest potential efficacy in rheumatoid arthritis, inflammatory diseases, and cancers, but results are not conclusive.

Conclusions:

Curcumin demonstrates a favorable safety profile and potential therapeutic benefits for several diseases.
Low oral bioavailability remains a challenge, necessitating research into enhanced formulations and novel delivery systems.
Well-designed clinical trials are crucial to validate curcumin's efficacy and establish its role in disease management.