A knee specialist I went to got me taking Glucosamine, Chondroitin, & MSM for the joints and after following the directions for 3 days I started to notice the knee pain was subsiding and I was starting to walk like a man again. It is suppose to help your body repair or build cartilage and make joint lubricant. It's worth a shot.
I call mind over matter. I know a few people taking those exact things. My wife is and I tried them as well. Those meds take a month before you even start to notice any differences. Three days is NOTHING. Either way if it makes you feel better that's great. My knee was so bad I had a scope one time to clean it up. Doc ended up completely removing the medial meniscus (inside part of the knee) as it had completely exploded into may parts. I had chronic bone-on-bone wear and NO meds helped. Even the dilaudid was not working for pain relief other than to kick my ass with side effects. Eleven monthjs later I had follow up X-rays and the knee was in worse shape then than before the scope procedure. It had advanced that fast. No choice left but a full replacement and that has worked out very well for me. You mentioned joint lubricant aka synovial fluid. My knee was so bad my body thought it needed lubrication and kept producing it. Every 4-6 weeks I would have to go have it drained. Doc would get an average of 100ml each time. Normal knee joint has 5ml. It was causing pressure on the nerves and causing me extreme pain.