I had a accident to my knee about eight or nine year my left knee had a full replacement and my right had an otoscopic. When my work is done. And I love working at my job. But the right knee hurt a great deal at the end of my work day. It hurt only when I am ready to lie down in bed the knee and leg is throbbing. So what med I can take safely with out hurting the liver. I have a liver diverse. So I grew my own liver. So I have a new liver and want to keep it that way. Any advice thank you.