"There is a lot of misinformation being circulated about IGF-1 currently. Many sources claim that IGF-1 supplementation is only effective when administered intravenously. NOW® IGF-1 utilizes new liposome technology to facilitate absorption of IGF almost immediately after administration. While capsules, tablets and liquids pass through the digestive tract, which can reduce the amount of IGF-1 absorbed, lozenges and liposprays are absorbed through the mucosal lining of the throat almost immediately without loss of the active ingredient. Lozenges and liposprays cannot take the place of doctor administered hormone therapy, but they are effective if used properly according to manufacturer’s directions."