This stuff does actually help. I have this 10 yr old hen with arthritis and every now and then, maybe three times a month, I give her half a tablet. The three photos are before I started giving her tablets, I'm sorry, they are terrible photos, she hates me. You can see how she is in pain with her tail down and how her toes are slightly curled to the side. Now, after about two months of constructive tablets, she is able to walk and run without using her wings to flap and lift her off the ground. She even likes to scratch around again!
Great article. Just wanted to say: Your chicks don't have to go outside at 4 to 5 weeks old. They can go out as soon as they are a weeks old. I just use an old bird cage.