How Much Curcumin Should Be Taken To Replace Diclofenac 75mg?

I am a woman 75 years old. I am on diclofenac 75 mg. I understand from a article that curcumin does the same thing with out any side effects. How much curcumin should I take to replace 2 pills a day? My email address is YYYY@YYYY . Thank you and I will wait for your answer.