I believe that you have to allow the bisphosphonates to wear off to gain the benefits of the anabolic drugs. My osteoporosis doc had me start with Tymlos as he noted it’s not as effective if on a bisphosphonate immediately prior (i believe they “coat” the bone, which blunts the effect of the anabolic). After my two years on Tymlos I then did a reclast infusion. I will have two more annual reclast infusions and then do a drug holiday for several years. They will test my bone markers and when it starts to show a decline I will then start the next drug (yet TBD). My sister is on a bisohosphonate as well, her osteo doc is having her do five years max on it (note it’s not as powerful as reclast - I was told five years of Fosomax or 3 annual reclast infusions). She then has a 3-5 year drug holiday then will go back on the bisphosphonate when her bone markers start to decline. Too much continuous time on bisphosphonate has been found they become less effective and can cause other issues such as brittle bones and atypical fractures. All of the drugs can cause issues with continuous use over a certain number of years. Drug holidays are becoming more common as they have found drugs like Reclast remain in your system for many years. I would ensure your doc is testing however so you can monitor when it’s time to start the next treatment. I believe they commonly want at least a year off bisphosphonates to gain the benefits of the anabolics like Tymlos, Forteo and (from what I understand 3 years after reclast or 2 after a daily bisphosphonate are pretty common). Evenity may be in my future someday, we discussed how I would need to wait at least a year after bisphosphonates (likely at least 2 or 3 after Reclast to receive the most benefit from the drug). The timing and order of the drugs is incredibly important. I would be cautious doing more time on Reclast. Drug holidays have become more common lately as numerous studies are now showing the bisphosphonates build up in your system and can take five+ years to fully clear as well as the issues they are finding with continuous use. If you inquire with your osteo doc as to the reasoning he can likely explain why and share some of the studies with you