Support For Those Quitting Prolia

Posted by formisc @formisc, Feb 13 10:14pm

I wanted to start this Discussion as a support thread for those who have already decided to quit Prolia and are in the process of transitioning out of Prolia to share our knowledge, thoughts, decisions and experiences as i had difficulty finding such posts from the various other Prolia threads. Those who have already completed their transition from Prolia are most welcome to contribute their experience.

It would help if you could include some basic info such as TScores, BTMs if available, number of Prolia injections taken, what med you transitioned to, length of time on relay drug and any feedback on effectiveness/reaction to the relay drug.

To prevent overlap with other Discussions already on this forum, the reasons for quitting Prolia need not be raised and it will be assumed that you have already done your research and made your decision. It is hoped that this Discussion will focus more on any feedback/advice that can assist in the transitioning process i.e. not on the 'Why' (quit Prolia) but more on the 'How' (to manage the transition).

Maybe i can start.

Background:
My TScores from my 1st DXA scan in May 2022 were:
Lumbar Spine -1.3
Femoral Neck -2.7
Total Hip -3.0
Unfortunately, my PCP did not order any BTMs so i do not have any baseline numbers.

My 1st Prolia shot was in July 2022, 2nd in Jan 2023 and my 3rd in July 2023.

In Dec 2023 after 18 months on Prolia, i did my 2nd DXA and the results were:
Lumbar Spine -1.1
Femoral Neck -2.6

I decided to quit Prolia before the 4th shot and started on weekly Alendronate in Jan 2024. To date, i have taken 7 Alendronate tablets.

Feedback on Alendronate:
The relay drugs most often cited are Reclast (most frequent) and Alendronate. Alendronate is not recommended for those with esophagus issues as it can irritate and damage the digestive tract.

I decided on Alendronate instead of Reclast as i was wary of taking in a full 1 year's dose of meds in one go and also because i read that the timing of the Reclast infusion can be tricky and the wrong timing may necessitate additional infusions. With Alendronate being a smaller weekly dose, the timing is not really an issue provided there is no delay in starting it at the time the Prolia shot is due.

The 2 days after the first Alendronate tablet and also after the 3rd tablet, i had a bit of stomach pain which went away after i took Veragel. From the 4th week to the 7th week, i have had an achy feeling at the side of my left knee. More surprisingly, i had 3 episodes of tinnitus after my 6th tablet, something which i have not experienced for a long time.

All the above side-effects have been bearable so i will continue with the Alendronate. I pray for the side-effects to cease as i do not want to go on Reclast and i read that Actonel is not potent enough to mitigate the rebound effect.

I plan to do a BTM test in Mar 2024 and quarterly thereafter for the 1st year and a DXA at the end of the 1st year. Depending on the results, i may stop the Alendronate or perhaps go on half-dosage for another 6 months instead of stopping cold turkey. Will also do a BTM at 18 months and a BTM cum DXA at 24 months of Alendronate as the rebound window supposedly stretches over 30 months from the last Prolia shot.

Interested in more discussions like this? Go to the Osteoporosis & Bone Health Support Group.

@formisc

Thanks for the supportive words, gently. No, I don't think I would be in a hurry to go onto Forteo, Tymlos or any other osteo med after my scare with Prolia. In any case, my current priority is to cease all anti-resorptives and that would take at least another year. My plan is to continue weekly Alendronate till end-Dec 2024; take another BTM and then move to fortnightly Alendronate for 6 months and perhaps followed by monthly Alendronate for another 6 months before stopping altogether at end-Dec 2025. Throughout this period, I will have to rely on my BTM tests to alert me to any possible rebound effect

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@formisc, I wondered. With your T score many endocrinologists would not have prescribed osteo meds for you. Cheers to your escape.

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@formisc

Thanks for the supportive words, gently. No, I don't think I would be in a hurry to go onto Forteo, Tymlos or any other osteo med after my scare with Prolia. In any case, my current priority is to cease all anti-resorptives and that would take at least another year. My plan is to continue weekly Alendronate till end-Dec 2024; take another BTM and then move to fortnightly Alendronate for 6 months and perhaps followed by monthly Alendronate for another 6 months before stopping altogether at end-Dec 2025. Throughout this period, I will have to rely on my BTM tests to alert me to any possible rebound effect

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@formisc You provided a fine example of careful planning and usage of bone markers for monitoring progress. Curiously, is your planned reducing dose to once every 2 weeks for 6 mo then once monthly thereafter for the second year a well studied regimen? Generic fosamax -alendronate comes in with many dose strength as you probably know. They could provide a way for titrating dose downward in a gradual manner.

Thank you for sharing your ongoing prolia cessation experience. Best wishes.

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@gently

@formisc, I wondered. With your T score many endocrinologists would not have prescribed osteo meds for you. Cheers to your escape.

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Thanks, gently. Unfortunately, the PCP I saw for my osteoporosis was keen to prescribe the meds

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@mayblin

@formisc You provided a fine example of careful planning and usage of bone markers for monitoring progress. Curiously, is your planned reducing dose to once every 2 weeks for 6 mo then once monthly thereafter for the second year a well studied regimen? Generic fosamax -alendronate comes in with many dose strength as you probably know. They could provide a way for titrating dose downward in a gradual manner.

Thank you for sharing your ongoing prolia cessation experience. Best wishes.

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Thanks, mayblin.
No, I am doing this all on my own without any advice and knowledge other than what I have researched/read. Most studies recommend a follow-on period of between 1 to 2 years after Prolia although I recall I saw one article that mentioned a minimum of just 6 months but I can't find it again. With my low CTX scores, I could conceivably stop my Alendronate after 1 year but I prefer to be more conservative and ease off more gradually to reduce any shock to the system. I did come across several studies that mentioned that a half dose or fortnightly dose was effective in suppressing bone resorption but none referencing such use in withdrawal from Prolia. As for smaller dosages of Alendronate, I understand that these are only available for the brand-name Fosamax pills but I have not been able to find them in any pharmacy (and they would likely need a separate prescription) hence I have to go the fortnightly/monthly route

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@formisc

Thanks, mayblin.
No, I am doing this all on my own without any advice and knowledge other than what I have researched/read. Most studies recommend a follow-on period of between 1 to 2 years after Prolia although I recall I saw one article that mentioned a minimum of just 6 months but I can't find it again. With my low CTX scores, I could conceivably stop my Alendronate after 1 year but I prefer to be more conservative and ease off more gradually to reduce any shock to the system. I did come across several studies that mentioned that a half dose or fortnightly dose was effective in suppressing bone resorption but none referencing such use in withdrawal from Prolia. As for smaller dosages of Alendronate, I understand that these are only available for the brand-name Fosamax pills but I have not been able to find them in any pharmacy (and they would likely need a separate prescription) hence I have to go the fortnightly/monthly route

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You are amazing at planning and executing each step all by yourself! Soon your hard work will be paid off. Thank you for the links that you provided at the beginning of this thread - they could be very handy for someone in need.

I probably got it wrong- I thought generic has different strength 5, 10, 35, and 40mg, maybe it's the other way around. The next lower strength 40mg isnt too far from what you are planning to do - so your plan of reducing dose is sound regardless. And, you have CTX to ensure the effectiveness. Best of luck, keep us posted with your progress!

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@mayblin

You are amazing at planning and executing each step all by yourself! Soon your hard work will be paid off. Thank you for the links that you provided at the beginning of this thread - they could be very handy for someone in need.

I probably got it wrong- I thought generic has different strength 5, 10, 35, and 40mg, maybe it's the other way around. The next lower strength 40mg isnt too far from what you are planning to do - so your plan of reducing dose is sound regardless. And, you have CTX to ensure the effectiveness. Best of luck, keep us posted with your progress!

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Yes, the recommended Fosamax dosage for treating osteoporosis is 70mg weekly or 10mg daily. The recommended dosage for prevention of osteoporosis is 35mg weekly or 5mg daily. And 40mg daily is recommended for the treatment of Paget's disease

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@rjd

What is a 'significant risk' of fracture or osteonecrosis?" And how does this risk compare to the risk of fracture without treatment? Numbers would be helpful here, if possible.

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Hello,
After almost 2 years on Prolia, I moved to a new state and new endocrinologist. She took me off Prolia because she felt I was too young (67) to be on it for the rest of my life. I agreed to get a bone density and revisit at the next appointment. In the meantime, (3 months) I was diagnosed with two compression fractures in my spine. Not sure where to go from here. Note to self and anyone reading. DO NOT go off Prolia without a plan going forward.

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@schallgal

Hello,
After almost 2 years on Prolia, I moved to a new state and new endocrinologist. She took me off Prolia because she felt I was too young (67) to be on it for the rest of my life. I agreed to get a bone density and revisit at the next appointment. In the meantime, (3 months) I was diagnosed with two compression fractures in my spine. Not sure where to go from here. Note to self and anyone reading. DO NOT go off Prolia without a plan going forward.

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@schallgal, so sorry to hear about your compression fractures. Hope you are well now.
I presume you stopped Prolia cold turkey without any follow-on med? That's usually not advisable. Also, did you do any bone turnover marker (BTM) blood tests in particular, CTX? That could give some warning about any possible rebound effect from stopping Prolia
The usual advice I have read from public papers is to use Reclast as a follow-on med after Prolia when you have taken 3(4?) or more shots. In my case, I stopped Prolia after 3 shots and I wasn't keen on doing a 1yr dose of Reclast so I opted to try weekly Alendronate instead and it seems to be working to suppress the rebound

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@schallgal

Hello,
After almost 2 years on Prolia, I moved to a new state and new endocrinologist. She took me off Prolia because she felt I was too young (67) to be on it for the rest of my life. I agreed to get a bone density and revisit at the next appointment. In the meantime, (3 months) I was diagnosed with two compression fractures in my spine. Not sure where to go from here. Note to self and anyone reading. DO NOT go off Prolia without a plan going forward.

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I recently went for my fourth Pro shot after getting a bone density which showed a 9% improvement in my spine in two years of Prolia. I was told that after two more years and continued improvement with no fractures they will switch me to Reclast infusion. No one should take you off Prolia without having another bone density drug to replace it, I’m really shocked that your Endocrinologist would just take you off it. I would advise getting a new doctor.

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@formisc

I have received the results of my third BTM blood test done in early Sep 2024 after 36 weeks of Alendronate following cessation of Prolia.

To recap - I did 3 half-yearly Prolia injections in Jul 2022, Jan 2023 and July 2023 and started on Alendronate at end-Dec 2023. My first BTM was in early Mar 2024 after 10 weeks of Alendronate and my second BTM was in end-May after 22 weeks of Alendronate. I do not have any baseline BTM numbers. As per my opening post, I am sharing my BTM results in case it proves useful to anyone else monitoring their own exit from Prolia

CTX 54 pg/mL (May: < 50; Mar: 51)[range 171-970]
iPTH 4.4 pmol/L (May: 3.2; Mar: 3.5)[range 1.6-6.9]
Calcium (corrected) 9.1 mg/dL (May: 8.7; Mar: 8.3)[range 8.8-10.2]
Albumin 3.9 g/dL (May: 4.1; Mar: 4.1)[range 3.5-5.0]
Vit D 46.7 ng/mL (May: 43.3; Mar: 42)[range 30.0-99.9]

My CTX remains low. Am in fact, a bit relieved that it now again has a reading and is no longer the mysterious, numberless '< 50' ! Both calcium and Vit D have continued to increase since i upped my daily supplemental intake to around 900mg of calcium and 2000 IU of D3. iPTH has gone up too while albumin has decreased

Any insight or comments on the above numbers is very welcome

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I share your relief to learn that your most recent CTX test number has presumably increased and is now measurable.

And I am heartened to also learn you have a well-designed plan to reduce the alendronate dosage perhaps with the aim, in part, of increasing your low CTX number whilst avoiding Prolia related 'rebound.'

I hated thinking with such a low CTX number, new bone might be forming on top of a less than ideal foundation of old bone because it is not undergoing osteoclastic grooming/preparation.

Are you monitoring your iPTH level for a particular reason? And could that reason be connected to the low CTX number?

Also you implied in an earlier post that you stopped Prolia because you had problems with it. What sort of problems did you experience?

I need to start thinking about weaning myself from post-Prolia alendronate but should perhaps wait until I have another CTX test in December (had no baseline.)By then, it will have been 2 years since my last Prolia injection, well past any 18 month rebound window.

My one and only CTX score was 313, taken last May after one year on alendronate which was started when my 3rd Prolia injection was due.

Would prefer for the CTX number to go down a bit more but it does not appear worrisomely high standing alone. Just wish I understood better what it means in relation to my P1NP result and to somehow knowing that the resulting bone formation is producing something strong, not just dense. I am very keen about not confusing bone density and bone strength.

Perhaps I will copy your alendronate reduction strategy .....if so, do I have your permission to call it the 'formisc step-down approach?'

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