Hi! I have a 13 year old FS Scottish Fold cat that I've been treating for osteoarthritis of the hocks/declaw sites and progressive renal dz with Rehmannia 8 and Benefit Hips and Knees for over 7 months now. Initially, owner came to me because vocalization at night had progressively worsened and they were also concerned about continued weight loss/progression of the renal dz. When I saw the case 7 months ago, bloodwrk indicated Stage 2/4 CRF (creatinine 1.8 mg/dL and BUN 54 mg/dL with a SG of 1.030 and > 30 g/dl ERD). Started herbal med's, owner reported that vocalization at night dramatically improved, until recently - cat is now back to vocalization throughout the night. Now, cat has continued to lose weight, and renal levels have increased to stage 3/4 (creatinine 3.0 mg/dL, BUN 67 mg/dl, SG 1.019, continued protein loss in urine). Should I consider another herbal combination at this point? And if so, what's your recommendation. I believe the cat is a typical Kidney Yin deficency patient.