Is this just the latest version of hope in a jar, albeit a vitamin jar? Brand-new clinical research seems to indicate that there's something real to those claims. In a large double-blind, placebo-controlled study published in early 2014, women took 2.5 g of a particular hydrolyzed collagen peptide (brand name Verisol) once a day; after 8 weeks, researchers measured a 20% reduction in wrinkle depth around the women's eyes.