The Multi Collagen Plus looks like a great product and maybe adding hyaluronic acid powder (sodium hyaluronate) to the Multi Collagen would help with the tendons and ligaments. That's kind of how it happened with my ankle. The ankle probably being mostly tendons and ligaments, 1/4 level tsp (about 440 mg) of BulkSupplements' hyaluronic acid (HA) powder mornings helped my sprained ankle in combo with 500 mg chicken sternum, 1 level tsp of hydrolized bovine collagen powder and 4 calcium hydroxyapatite (CH) capsules per day, which equals 1 gram of calcium total from the CH. HA is sticky, but I just put the HA powder on my tongue and take a sip of water, letting the water soak into the HA for 30 seconds. Then scrape off the gelatinous HA on roof of mouth and swallow it with more water. Even though chicken sternum does have natural HA and chondroitin, it was only after I added the hyaluronic acid powder that my sprained ankle became better, although not perfect but improved. Therefore, I see HA as a lubricant for connective tissue. Chicken sternum doesn't work every time, and didn't work for my shoulders, which are somewhat compromised but usable.
Healed Bad Knees and Hips
I have seen good results in myself and several people within 4 months of taking one 500 mg capsule per day of chicken sternum Type 2 collagen capsules from SwansonVitamins or PipingRock.
My knees were loose in their sockets in 2015, but their cartilage filled in back to normal in 4 months by taking a capsule of chicken sternum mornings. In 2016, another person canceled their hip replacement during 6 months of taking the chicken sternum capsules. During the same 6 months, a friend of the hip replacement person could not stand in the buffet line without having to sit down because of knee pain, but ended up canceling their knee replacement by taking the chicken sternum and was walking around normally as if the knee had never hurt. More recently in April of 2020, another 86 year old person's severe knee pain was healed within 4 months of taking a capsule per day of the Swanson chicken sternum.
A bottle of 120 capsules currently costs about $15 from Swanson: https://www.swansonvitamins.com/swanson-premium-chicken-sternum-cartilage-collagen-type-ii-500-mg-120-caps