Thank you all for your replies.
I don't have any limited movement, I do Taichi and I'm fairly supple really although
my joints tend to creak. I used to take cod liver oil capsules for my joints but
it upset my stomach so had to stop.
The dr at the hospital said I had a chronic muscle and nerve problem and prescribed
the codeine, I'm just concerned about the affects it can have particularly on my
stomach.I've got carpal tunnel as well which makes my hand throb.
I've had a lot of problems with my stomach in the past, mostly stress related, I'm really
anxious about the codeine creating more problems