Glucosamine without chondrotin

BB, I have found Glucosamine in the past at my local pharmacy, on the shelf. Don't remember it was either Duane Reade/Rite Aid, or CVS.
If you cannot find it, email me, there is a company called Designs for Health, I. Can't post the website (not sure I should post the name either). They offer it, however, you need a referral from a Doctor, they need to contact the company and get a Practitioners Code which they need to give you allowing you to sign on.
They do pretty much all of their marketing to Medical Professionala, not the general public.
I was referred to this company by my (former) urologist, before I was diagnosed.

I have used glucosamine for arthritis for the last 5+ years after my PC diagnosis & treatment. For 5+ years before that I used glucosamine chondroitin. I switched, of course, because of the linkages of advanced PC to chondroitin.

I have always been able to find glucosamine-only in any pharmacy.

Peter, Prato and NKinney: thanks for your responses. I had done an internet search without success. I will check out my local pharmacies. Frank