Hmm, I guess I'm wondering what she meant by 'crumbly and tweaky' - I mean? Does she mean pre-arthritic or does she mean luxating patella or does she mean tendinitis or bursitis or? Lately, I've learned (from literature posted by EllieMay) that Cosequin is really the only joint supplement that has studies to back up claims of joint improvement in dogs - so that's what I'm using now for Wylie's LP.