Hi

Please check out the following link, it might be useful.

http://www.google.com/patents/US8772265

Dear Chetan,

Several studies show that turmeric/curcumin has anti-inflammatory properties and modifies immune system responses.

A 2006 study showed turmeric was more effective at preventing joint inflammation than reducing joint inflammation.A 2010 clinical trial found that a turmeric supplement called Meriva (standardized to 75 percent curcumin combined with phosphatidylcholine) provided long-term improvement in pain and function in 100 patients with knee OA.

In a small 2012 pilot study, a curcumin product called BCM-95 reduced joint pain and swelling in patients with active RA better than diclofenac, an nonsteroidal anti-inflammatory drug (NSAID).

So I would suggest see the standardized curcumin rather then using a raw one. You will get many standardized curcumin available commercially.

For arthritis: Capsule, typically 400 mg to 600 mg, three times per day; or 0.5 g to 1 g of powdered root up to 3 g per day. For RA: 500 mg twice daily.

Refer: http://www.arthritis.org/living-with-arthritis/treatments/natural/supplements-herbs/guide/turmeric.php

Also refer:

Belcaro G, et al Product-evaluation registry of Meriva®, a curcumin-phosphatidylcholine complex, for the complementary management of osteoarthritis . Panminerva Med. (2010)

Belcaro G, et al Efficacy and safety of Meriva®, a curcumin-phosphatidylcholine complex, during extended administration in osteoarthritis patients . Altern Med Rev. (2010

However, on more important thing to consider is mode of delivery. Oral delivery is mostly advantageous for curcumin when we are targeting arthritis.

Hope this clear your query.

Good Luck

Regards

Dr Shuaib

Dear Chetan,

please go through this link. 

http://www.ors.org/Transactions/61/0081.pdf. 

here the dose mentioned is 150 microgram.

This might be useful for your research study.