While perusing archived articles I noticed that four people were curious about a K2 supplement mentioned at reply #8 that supposedly helps joint (knee) health, but they did not get an answer as to the brand name.
I found a supplement that matches the poster’s description of ingredients at Swanson Vitamins (where I do my supplement shopping)...
https://www.swansonvitamins.com/p/life-extension-super-k-2600-mcg-90-sgels
Thanks, deks!