Thanks for your reply.
My issues are just general stiffness and some back pain which is mostly ageing related. I did not mean to suggest that it took two months to have an effect but that I noticed the effect for the two months. It is not dramatic but still noticeable. As turmeric is a herb used in food I think it unlikely that it is toxic - and I am not taking a particularly high dose. So I feel it has had an overall positive effect especially as it has reduced the frequency with which I have taken other meds over the period.
But I am open to your views as you may have more knowledge than me.