The present invention relates to teriparatide peptide-carrying nanoparticles, particularly for use in medicine, and includes methods for treatment of disorders, e.g., of bone density. Nanoparticle composition comprise a nanoparticle comprising a core comprising a metal and/or a semiconductor； and a corona comprising a plurality of ligands covalently linked to the core, wherein said plurality of ligands comprise at least one glutathione； and at least one teriparatide peptide that is non-covalently bound to the corona.
