The most clinically studied bioactive collagen peptide for joint cartilage — 30 years of research, over 20 studies, more than 2,500 participants. FortiGel works at the chondrocyte level: its specific peptide fraction (mean molecular weight ~3 kDa) acts as a biological signal that stimulates cartilage-producing cells to increase collagen and proteoglycan synthesis. The result is measurable cartilage regeneration — the first ingredient shown in humans to directly influence cartilage structure via oral supplementation. Standard collagen doesn't do this. FortiGel does it specifically.

The only ingredient with clinical research specifically on tendon and ligament collagen synthesis. Tendoforte is a distinct bioactive collagen peptide fraction from GELITA, separate from FortiGel, developed specifically for connective tissue beyond cartilage. Its peptides activate the protein biosynthesis machinery of tendon and ligament fibroblasts — in vitro, treated fibroblasts produced 1.2 to 2.4 times more tissue matrix. In the landmark Australian Institute of Sport clinical trial, subjects with chronic Achilles tendinopathy who had not responded to traditional physiotherapy were able to resume running in just three months.

The skin component — and the reason the formula does more than most people initially come here for. Verisol (GELITA's VERISOL® platform) is optimized specifically to stimulate dermal fibroblasts to produce collagen, elastin, and other extracellular matrix proteins in the skin. Clinical research at 2.5g daily — the exact dose in this formula — shows significant improvement in skin elasticity, hydration, and wrinkle reduction. This was included because for 2.5g per serving, it made sense. Anyone focused on their joints at this level isn't going to be unhappy about what this does for their skin as well.

The joint lubrication component — the only ingredient in this formula that targets the synovial fluid directly. Mobilee is a patented high-molecular-weight hyaluronic acid matrix derived from rooster comb, containing 65% hyaluronic acid along with polysaccharides and collagen. In healthy joints, synovial fluid is rich in hyaluronic acid — it acts as the lubricant that reduces friction between articulating surfaces. As joints age or are overused, HA concentration and molecular weight decline, reducing fluid viscosity and cartilage protection. Mobilee replenishes this system from the inside. Unlike generic HA supplements, Mobilee's high molecular weight and matrix composition are specifically studied for oral bioavailability and joint efficacy.

The ingredient without which none of the others synthesize properly. Vitamin C is the essential cofactor for prolyl hydroxylase and lysyl hydroxylase — the two enzymes that catalyze the hydroxylation step in collagen biosynthesis. Without adequate Vitamin C, procollagen chains can't form the stable triple-helix structure that makes mature collagen functional. This isn't optional biology: collagen synthesis cannot complete without it. Calcium ascorbate is the buffered form — gentler on the stomach than ascorbic acid, with identical efficacy for collagen synthesis. Its inclusion here is not an afterthought; it's the activation key for everything else in this formula.

The ingredient that works through a completely different mechanism than everything else in this formula — and that's exactly why it's here. UC-II is undenatured type II collagen from chicken sternum cartilage. Unlike hydrolyzed collagen peptides — which provide building blocks for tissue synthesis — UC-II works via oral tolerance: a specific immune process in the gut-associated lymphoid tissue that induces T-regulatory cells to suppress the immune system's inflammatory attack on cartilage. The result is reduced inflammation and enhanced cartilage repair through an immunological pathway, not a structural one. 40mg daily is the clinically validated dose — significantly lower than hydrolyzed collagen doses because the mechanism is immune-mediated, not supply-based.