💀 Fosamax, Boniva & Bone Loss — What You’re Not Being Told Someone asked me about once-weekly alendronate (Fosamax/Boniva) and whether it’s worth taking for years. Here’s the truth: These meds are bisphosphonates, and long-term they’ve been linked to osteonecrosis — permanent bone death. You take it to protect bone, but over time it may damage bone. That’s a problem. And despite decades of “take your calcium vitamin D,” I’ve never seen anyone reverse osteoporosis doing that. Not once. Because b