What is Doctor\'s Best Fish Collagen with TruMarine Collagen?Doctor\'s Best Fish Collagen is a highly absorbable Type I collagen peptide from TruMarine Collagen. The low molecular weight of this Collagen provides rapid and effcient absorption for healthy skin, nails and joints.TruMarine Collagen peptides contribute to healthy skin by increasing skin moisture, resulting in smoother skin and reduced wrinkle depth. Studies show that these small molecules in the collagen peptides provide superior bioavailability and digestibility.