Evidently, BCRP-mediated efflux could be circumvented by limiting C2 aryl substituents and the number of aromatic rings
For larger doses, a 0.5mL or 1mL syringe works better

Mechanism of Action Stimulates angiogenesis (formation of new blood vessels) Increases fibroblast activity and collagen synthesis Reduces pro-inflammatory cytokines and promotes anti-inflammatory cascades Enhances tendon-to-bone healing , muscle fiber regeneration, and gut lining repair Works through interaction with the nitric oxide system , aiding circulation and tissue oxygenation BPC157 promotes tendon and ligament healing, accelerates wound closure, and stabilizes vascular response after injury. Sikiric et al., Current Pharmaceutical Design Applications Joint pain, tendonitis, ligament tears Ulcers, IBS, leaky gut Muscle strain, post-surgical recovery Neural repair and recovery from nerve compression Post-cycle inflammation and tissue stress Delivery Administered via subcutaneous injection , near site of injury or systemically Can also be taken orally for GI-related issues (due to gastric stability) MK677 (Ibutamoren) Overview and How It Works MK677 (Ibutamoren) is an orally active growth hormone secretagogue that mimics the action of ghrelin to stimulate the release of growth hormone (GH) and IGF1

Liposomes Liposomes have been incorporated with ISGs as various derivatives, such as etosome, 127 niosome, 128130 and transfersome, 131133 which differ from intranasal administration alone
Some individuals report mild discomfort at the IV site, headaches, or other minor issues