alendronate /əˈlɛn.dɹəˌneɪt/ noun1 •The conjugate base, or any salt or ester, of alendronic acid.The main treatments now for osteoporosis are drugs called bisphosphonates, like Actonel, Boniva and alendronate, the generic version of Merck’s Fosamax. — 2009 formsalendronates