If you have osteoporosis and oral medications are not the right fit, your healthcare provider may discuss several treatment options with you, including Reclast, Prolia, or Evenity.
Although these medications are all used to treat osteoporosis, they work in different ways and have different dosing schedules, benefits, risks, and considerations. Reclast is given as an intravenous (IV) infusion, while Prolia and Evenity are administered as injections.
So, how do you know which option may be right for you?
There is no single “best” osteoporosis medication for everyone. Your healthcare provider will consider factors such as your fracture risk, kidney function, cardiovascular history, previous treatments, calcium and vitamin D levels, and other aspects of your health.
This guide provides a general comparison to help you have a more informed conversation with your prescriber.
Reclast vs. Prolia vs. Evenity: At a Glance
| Reclast | Prolia | Evenity | |
|---|---|---|---|
| Generic name | Zoledronic acid | Denosumab | Romosozumab |
| Drug type | Bisphosphonate | RANKL inhibitor | Sclerostin inhibitor |
| How it’s given | IV infusion | Subcutaneous injection | Two subcutaneous injections |
| Typical schedule | Once every 12 months for osteoporosis treatment | Every 6 months | Once monthly for 12 months |
| Main effect | Slows bone breakdown | Slows bone breakdown | Increases bone formation and slows bone breakdown |
The right treatment depends on your individual medical needs. Your healthcare provider can explain how these options fit into your osteoporosis treatment plan.
Reclast: A Once-Yearly Osteoporosis Infusion
Reclast (zoledronic acid) is a bisphosphonate administered through an IV.
It works primarily by slowing the activity of cells that break down bone. By reducing bone loss, Reclast can help improve bone strength and reduce the risk of certain fractures in appropriate patients.
For osteoporosis treatment, Reclast is generally administered once every 12 months.
One potential advantage is convenience. Instead of remembering to take an oral bisphosphonate every week or month, treatment can be completed with a yearly infusion.
Reclast may also be an option for people who have difficulty taking oral bisphosphonates because of gastrointestinal issues or the administration requirements associated with those medications.
What should you know about Reclast?
Your healthcare provider will typically evaluate kidney function and calcium levels before treatment. Adequate hydration is also important, and your prescriber may recommend calcium and vitamin D depending on your individual needs.
Some patients experience temporary flu-like symptoms after the infusion, particularly after their first dose. These may include fever, muscle aches, joint pain, headache, or fatigue.
For a more detailed look at the infusion experience, read our guide to Reclast Infusion for Osteoporosis: What to Expect, Side Effects, and How Often.
Prolia: An Injection Every Six Months
Prolia (denosumab) works differently from Reclast.
It is a biologic medication that blocks RANKL, a protein involved in activating cells responsible for bone breakdown. Prolia is administered as a subcutaneous injection once every six months.
For some patients, Prolia may be considered when other osteoporosis treatments are not appropriate or have not been effective.
One important consideration with Prolia
Keeping up with the dosing schedule is particularly important with Prolia.
If Prolia treatment is stopped or delayed without an appropriate follow-up treatment plan, bone turnover can increase and bone density can decline. Discontinuation has also been associated with an increased risk of vertebral fractures.
For that reason, if you start Prolia, talk with your healthcare provider about the long-term treatment plan. If you eventually need to stop Prolia, your doctor can determine whether another osteoporosis medication should be used afterward.
Evenity: A Monthly Bone-Building Treatment
Evenity (romosozumab) works differently from both Reclast and Prolia.
It blocks a protein called sclerostin, which allows it to both increase bone formation and decrease bone resorption.
Evenity is administered as two subcutaneous injections once a month for 12 months.
It is generally used for postmenopausal women with osteoporosis who are at high risk for fracture or have a history of osteoporotic fracture and need treatment that can significantly reduce fracture risk.
Because Evenity is intended as a 12-month course, your healthcare provider will typically discuss what medication should follow the course to help maintain improvements in bone density.
Important cardiovascular considerations
Evenity has a boxed warning concerning the potential risk of myocardial infarction (heart attack), stroke, and cardiovascular death.
It should not be started in patients who have had a heart attack or stroke within the preceding year, and your healthcare provider will consider your cardiovascular risk before prescribing it.
Make sure your prescriber knows about your complete cardiovascular history and any medications you take.
Osteoporosis Injection vs. Infusion: What’s the Difference?
One of the most obvious differences between these medications is how they are administered.
Reclast is an IV infusion and requires access to a vein. The medication is infused over at least 15 minutes, although your total appointment will generally take longer because of check-in, IV placement, laboratory review, and other care.
Prolia is administered as a subcutaneous injection every six months.
Evenity requires two subcutaneous injections at each monthly visit for 12 months.
The administration method is only one factor to consider. Your healthcare provider will also evaluate your fracture risk, medical history, laboratory results, previous treatments, and other factors before recommending a medication.
Which Osteoporosis Treatment Is Right for You?
There is no universal answer to whether Reclast, Prolia, or Evenity is better.
Each medication may make sense for different patients.
Your healthcare provider may consider:
- Your current fracture risk
- Previous fractures
- Bone density results
- Kidney function
- Calcium and vitamin D levels
- Cardiovascular history
- Previous osteoporosis medications
- Other medical conditions
- Your ability to stay on the recommended treatment schedule
- Insurance coverage and treatment costs
- Your preference for an infusion or injection
For example, someone who prefers a once-yearly treatment may appreciate the convenience of Reclast, while another patient may prefer an injection every six months.
For someone at very high fracture risk, a bone-building treatment such as Evenity may be considered before transitioning to a medication designed to maintain the gains.
The important thing is to choose a treatment plan based on your individual situation rather than comparing medications based on convenience alone.
Questions to Ask Your Healthcare Provider
Before starting osteoporosis treatment, consider asking:
- How high is my fracture risk?
- Which treatment is most appropriate for my situation?
- How is my kidney function?
- Do I need calcium or vitamin D supplementation?
- What are the most important side effects I should watch for?
- If I start Prolia, what is the long-term treatment plan?
- If I take Evenity for 12 months, what treatment comes next?
- How often will I need treatment and laboratory testing?
- Will my insurance cover the medication and administration?
- Where will I receive my treatment?
The last two questions can be especially important because the cost and logistics of specialty medications can vary depending on insurance coverage and the site of care.
For more information, read our guide to Medicare Part B vs. Part D for Infusion Drugs and our Financial Help for Specialty Medications.
How a Specialty Pharmacy Can Help
Choosing an osteoporosis medication is a decision you should make with your healthcare provider. However, managing the practical side of treatment does not have to be complicated.
A specialty pharmacy may be able to help with benefits verification, prior authorization, medication coordination, scheduling, and financial assistance when available.
At River’s Edge Pharmacy, our team helps patients navigate the administrative details involved with specialty medications and infusion therapy.
Depending on the medication, prescription, insurance coverage, and clinical requirements, treatment may be coordinated through our Irvine or Beverly Hills infusion centers or through home infusion when appropriate.
Our goal is to make the treatment process easier to navigate so you can focus on your health.
Reclast vs. Prolia vs. Evenity FAQ
Which is better, Reclast or Prolia?
Neither medication is universally better. Reclast and Prolia work differently and have different dosing schedules and considerations.
Your healthcare provider will consider factors such as your fracture risk, kidney function, previous osteoporosis treatments, and ability to maintain the recommended treatment schedule.
Is Evenity an infusion?
No. Evenity is not an IV infusion. It is administered as two subcutaneous injections once a month for 12 months.
Reclast is the IV infusion among these three medications.
Can you switch between Reclast, Prolia, and Evenity?
Yes, osteoporosis treatment may sometimes involve transitioning from one medication to another.
For example, patients completing a 12-month course of Evenity will generally need follow-up treatment to help maintain improvements in bone density. Patients discontinuing Prolia also need a carefully planned transition because of the risk associated with stopping treatment without appropriate follow-up.
Any medication transition should be planned with your healthcare provider.
Do Reclast, Prolia, and Evenity require lab work?
Laboratory monitoring depends on the medication and your individual health.
Your healthcare provider may evaluate calcium, vitamin D, kidney function, and other laboratory values before or during treatment when appropriate.
Which has fewer side effects: Reclast, Prolia, or Evenity?
Each medication has its own potential side effects and risks. There is no single option that has fewer side effects for every patient.
Your healthcare provider can explain the risks most relevant to your medical history and help you weigh them against the potential benefits of treatment.
Get Help Navigating Your Osteoporosis Treatment
Reclast, Prolia, and Evenity are different medications with different mechanisms, schedules, and safety considerations. The right choice depends on your individual health and should be made with your healthcare provider.
Once your treatment plan is established, River’s Edge Pharmacy can help with the logistics.
Our team can assist with benefits verification, prior authorization, scheduling, and treatment coordination when our services are appropriate for your prescribed therapy.
Call River’s Edge Pharmacy at (866) 413-3156 or visit repharmacy.com to learn more.
This article is for educational purposes only and does not replace medical advice, diagnosis, or treatment from a qualified healthcare professional. Always follow your prescriber’s recommendations and speak with your healthcare team before starting, stopping, or changing an osteoporosis medication.