However, another "UC-II" containing product had a smaller amount of collagen and did not receive Approval in testing (see What CL Found and How Products Were Evaluated)
Science 281(5373):108111 Basson CT, Huang T, Lin RC, Bachinsky DR, Weremowicz S, Vaglio A, Bruzzone R, Quadrelli R, Lerone M, Romeo G, Silengo M, Pereira A, Krieger J, Mesquita SF, Kamisago M, Morton CC, Pierpont ME, Muller CW, Seidman JG, Seidman CE (1999) Different TBX5 interactions in heart and limb defined by Holt-Oram syndrome mutations
This area is generally meatier and further away from major nerves and bones
The oral formulation (Rybelsus) uses SNAC (sodium N-[8-(2-hydroxybenzoyl)amino]caprylate) as an absorption enhancer, achieving ~1% oral bioavailability vs ~89% for subcutaneous injection (Ozempic/Wegovy)