Hi - I finished 12 months of Evenity, then 2 months later had the Reclast infusion. Because I refused Prolia, she suggested going back to Evenity after that first Reclast infusion. The Reclast was tough! I had 4 days of horrible aches, brain fog, little sleep. And I stayed very hydrated and took Tylenol the days before the infusion, day of and for 3 days after.