Reddit mentions of Jarrow Formulas Curcumin Phytosome, Promotes Joint Nutrition, 500 mg, 60 Capsules

Ultimately intelligent training and proper recovery and mobility work will give probably the biggest benefit to your joints. However when bodyweight training or simply aiming to be healthier it is important to have low levels of inflammation. Glucosamine can help but a solid omega 3 supplement would be similar. I'd personally recommend the following as a joint stack.

Collagen - Can by in a collagen hydrolysate form which is powdered (here) or simply drink a good bone/chicken broth daily. Collagen is the most abundant protein in your body and the one found in your joints. among other places. I'd recommend 10g a day, you can add to shakes or even cups of tea or coffee as it is heat stable. Alternatively drink 1-2 cups of bone broth a day. I personally have the bone broth daily and collagen every now and again.

Omega 3/Cod Liver Oil - To generally lower inflammation. I prefer a good cod liver oil, like this as it comes with those good omega 3's and a load of fat soluble vitamins like A, D, E, K2 etc. I take 1 tsp daily. Consuming oily fish daily can give the same effect.

Curcumin Phytosome - Curcumin is a turmeric extract that is a very powerful anti-inflammatory, I personally take this daily and feel huge help with inflammation compared to when I don't. 500mg of a good extract daily. Consuming just turmeric isn't as good as you'd have to take like 20g of it, it's also not particularly well absorbed.

Vitamin C - This helps your body synthesize it's own collagen. Buy it in a crystal form of L-Ascorbic acid. Would recommend 1-3g daily taken throughout the day.

Generally have a good diet that is low in inflammatory foods, like grains (wheat, oats, barley), pasteurized dairy, seed oils (rapeseed/canola, sunflower), processed foods and sugar, but high in oily fish, good quality meat, nuts, seeds, vegetables, fruit and raw dairy :)