FREMONT, Calif.--(BUSINESS WIRE)--Zosano Pharma, Inc., a privately held pharmaceutical company developing a novel transdermal delivery technology, today announced positive results from its phase 2, randomized, multi-center, double-blind, multi-dose study designed to determine safety and efficacy of its ZP-PTH rapid delivery patch for the treatment of osteoporosis. The product delivers PTH 1-34, teriparatide (PTH), a compound that has been proven to stimulate formation of new bone and reduce the risk of fractures. The ZP-PTH patch uses a unique transdermal technology being developed as an alternative to daily injections.