WHAT IS BILDYOS? BILDYOS is a prescription medicine used: To treat osteoporosis (thinning and weakening of bone) in women after menopause who are at high risk for fracture or cannot use another osteoporosis medicine or other osteoporosis medicines did not work well.
IMPORTANT SAFETY INFORMATION
What is the most important information I should know about BILDYOS? If you receive BILDYOS, you should not receive other denosumab products at the same time. BILDYOS can cause serious side effects, including: Increased risk of severe low calcium levels in your blood (hypocalcemia) BILDYOS may lower the calcium levels in your blood. If you have low blood calcium before you start receiving BILDYOS, it may get worse during treatment. Your low blood calcium must be treated before you receive BILDYOS. Talk to your doctor before starting BILDYOS. Your doctor may prescribe calcium and vitamin D to help prevent low calcium levels in your blood while you take BILDYOS. Take calcium and vitamin D as your doctor tells you to.
WHAT IS BILDYOS?
BILDYOS is a prescription medicine used:
To treat osteoporosis (thinning and weakening of bone) in women after menopause who are at high risk for fracture or cannot use another osteoporosis medicine or other osteoporosis medicines did not work well.
To increase bone mass in men with osteoporosis who are at high risk for fracture.
To treat osteoporosis in men and women who will be taking corticosteroid medicines (such as prednisone) for at least 6 months and are at high risk for fracture.
To treat bone loss in men who are at high risk for fracture receiving certain treatments for prostate cancer that has not spread to other parts of the body.
To treat bone loss in women who are at high risk for fracture receiving certain treatments for breast cancer that has not spread to other parts of the body.
IMPORTANT SAFETY INFORMATION
What is the most important information I should know about BILDYOS? If you receive BILDYOS, you should not receive other denosumab products at the same time. BILDYOS can cause serious side effects, including: Increased risk of severe low calcium levels in your blood (hypocalcemia) BILDYOS may lower the calcium levels in your blood. If you have low blood calcium before you start receiving BILDYOS, it may get worse during treatment. Your low blood calcium must be treated before you receive BILDYOS. Talk to your doctor before starting BILDYOS. Your doctor may prescribe calcium and vitamin D to help prevent low calcium levels in your blood while you take BILDYOS. Take calcium and vitamin D as your doctor tells you to.
Choose BILDYOS, a biosimilar as safe and effective as PROLIA (denosumab)
Meet BILDYOS
BILDYOS is highly similar to PROLIA (denosumab)
Biologic osteoporosis treatment may be expensive. PROLIA is one of the more costly medications covered by Medicare.
A biosimilar option may lower treatment costs
The wholesale acquisition cost (WAC) for BILDYOS is ~55% less expensive than PROLIA.*
Cost and coverage for BILDYOS is dependent on the terms and conditions of your individual insurance benefits, including any applicable deductible, co-insurance, or co-payment.
* Based on comparison of WAC per injection. WAC prices: BILDYOS $844.00 per injection; PROLIA $1,875.43 per injection (Source: Medi-Span® Price Rx® as of Sept 2025). WAC, also known as list price, is the price of a medication set by a pharmaceutical manufacturer when selling their product to a wholesaler.
BILDYOS
PROLIA
Meets strict FDA standards for approval
5 approved uses
Highly similar safety and effectiveness
Strengthens bone and protects against fractures
1 injection every 6 months
FDA, US Food and Drug Administration.
BILDYOS is a biosimilar to PROLIA, meaning it is a highly similar alternative
BILDYOS is a prescription medicine used to treat osteoporosis (thinning and weakening of bone) in women after menopause who:
are at high risk for fracture (broken bone)
cannot use another osteoporosis medicine or for whom other medicines did not work well
Increase bone mass in men with osteoporosis who are at high risk for fracture
Treat osteoporosis in men and women who will be taking corticosteroid medicines (such as prednisone) for at least 6 months and are at high risk for fracture
Treat bone loss in men who are at high risk for fracture receiving certain treatments for prostate cancer that has not spread to other parts of the body
Treat bone loss in women who are at high risk for fracture receiving certain treatments for breast cancer that has not spread to other parts of the body
It is not known if BILDYOS is safe and effective in children. BILDYOS is not approved for use in children.
Biosimilars work the same way as the original biologic, at a potentially lower cost
Biosimilars like BILDYOS can provide patients with more treatment options
A biosimilar is an FDA-approved medicine that is highly similar to the original biologic medicine it is based on. Biologic medicines are complex. Biosimilars are not exact copies, but they go through a strict FDA-approval process to make sure they are just as safe and effective as the original biologic. A biosimilar works the same way in the body as the original biologic. Biosimilars may also be available at a lower cost than the original biologics.
Cost and coverage for specific biosimilars are dependent on the terms and conditions of your individual insurance benefits, including any applicable deductible, co-insurance, or co-payment.
A biosimilar works in your body in the same way as the biologic it’s based on, offering the same treatment benefits and potential side effects
BILDYOS is brought to you by Organon Biosimilars
We are an experienced biosimilar company with:
8+
years dedicated to biosimilars in the US
6
biosimilars approved in the US and still counting
5
therapeutic areas treated:
Cancer care
Gut conditions
Skin conditions
Joint and autoimmune conditions
Bone health
Organon is dedicated to making a difference in women’s health, through biosimilars and beyond
Learn how BILDYOS is administered and things to keep in mind during treatment
To treat osteoporosis (thinning and weakening of bone) in women after menopause who are at high risk for fracture or cannot use another osteoporosis medicine or other osteoporosis medicines did not work well.
To increase bone mass in men with osteoporosis who are at high risk for fracture.
To treat osteoporosis in men and women who will be taking corticosteroid medicines (such as prednisone) for at least 6 months and are at high risk for fracture.
To treat bone loss in men who are at high risk for fracture receiving certain treatments for prostate cancer that has not spread to other parts of the body.
To treat bone loss in women who are at high risk for fracture receiving certain treatments for breast cancer that has not spread to other parts of the body.
IMPORTANT SAFETY INFORMATION
What is the most important information I should know about BILDYOS?
If you receive BILDYOS, you should not receive other denosumab products at the same time.
BILDYOS can cause serious side effects, including:
Increased risk of severe low calcium levels in your blood (hypocalcemia) BILDYOS may lower the calcium levels in your blood. If you have low blood calcium before you start receiving BILDYOS, it may get worse during treatment. Your low blood calcium must be treated before you receive BILDYOS. Talk to your doctor before starting BILDYOS. Your doctor may prescribe calcium and vitamin D to help prevent low calcium levels in your blood while you take BILDYOS. Take calcium and vitamin D as your doctor tells you to.
If you have advanced chronic kidney disease (may or may not be on kidney dialysis), BILDYOS may increase your risk for severe low calcium levels in your blood, which could result in hospitalization, life-threatening events, and death. A mineral and bone disorder associated with kidney disease called chronic kidney disease-mineral bone disorder (CKD-MBD) may increase your risk for severe low calcium levels in blood. Before you start BILDYOS and during treatment, your doctor may need to do certain blood tests to check for CKD-MBD.
Most people with low blood calcium levels do not have symptoms, but some people may have symptoms. Call your doctor right away if you have symptoms of low blood calcium such as:
spasms, twitches, or cramps in your muscles
numbness or tingling in your fingers, toes, or around your mouth
Serious allergic reactions Call your doctor or go to your nearest emergency room right away if you have any symptoms of a serious allergic reaction, including low blood pressure (hypotension); trouble breathing; throat tightness; swelling of your face, lips, or tongue; rash; itching; or hives.
Severe jaw bone problems (osteonecrosis) Severe jaw bone problems may happen when you take BILDYOS. Your doctor should examine your mouth before you start BILDYOS. Your doctor may tell you to see your dentist before you start BILDYOS. It is important for you to practice good mouth care during treatment with BILDYOS. Ask your doctor or dentist about good mouth care if you have any questions.
Unusual thigh bone fractures Some people have developed unusual fractures in their thigh bone. Symptoms of a fracture include new or unusual pain in your hip, groin, or thigh.
Increased risk of broken bones, including broken bones in the spine, after stopping, skipping or delaying BILDYOS Talk with your doctor before starting treatment. After your treatment with BILDYOS is stopped, or if you skip or delay taking a dose, your risk for breaking bones, including bones in your spine, is increased. Your risk for having more than 1 broken bone in your spine is increased if you have already had a broken bone in your spine. Do not stop, skip, or delay taking BILDYOS without first talking with your doctor. If your BILDYOS treatment is stopped, talk to your doctor about other medicine that you can take.
Serious infections Serious infections in your skin, lower stomach area (abdomen), bladder, or ear may happen if you take BILDYOS. Inflammation of the inner lining of the heart (endocarditis) due to an infection may also happen more often in people who take BILDYOS. You may need to go to the hospital for treatment.
BILDYOS is a medicine that may affect the ability of your body to fight infections. People who have weakened immune systems or take medicines that affect the immune system may have an increased risk for developing serious infections. Call your doctor right away if you have any of the following symptoms of infection:
fever or chills
skin that looks red or swollen and is hot or tender to touch
fever, shortness of breath, cough that will not go away
severe abdominal pain
frequent or urgent need to urinate or burning feeling when you urinate
Skin problems Inflammation of your skin (dermatitis), rash, and eczema may occur with use of BILDYOS. Call your doctor right away if you have any of the following skin problems that do not go away or get worse: redness; itching; small bumps or patches (rash); your skin is dry or feels like leather; blisters that ooze or become crusty; skin peeling.
Bone, joint, or muscle pain Some people who take denosumab products develop severe bone, joint, or muscle pain.
Call your doctor right away if you have any of these side effects.
What should I tell my doctor BEFORE starting BILDYOS?
Tell your doctor about all of your medical conditions, including if you:
Are taking other denosumab products
Have low blood calcium
Cannot take daily calcium and vitamin D
Had parathyroid or thyroid surgery (glands located in your neck)
Have been told you have trouble absorbing minerals in your stomach or intestines (malabsorption syndrome)
Have kidney problems or are on kidney dialysis
Are taking medicine that can lower your blood calcium levels
Plan to have dental surgery or teeth removed
Are pregnant or plan to become pregnant. BILDYOS may harm your unborn baby.
Females who are able to become pregnant:
Your health care provider should do a pregnancy test before you start treatment.
You should use an effective method of birth control (contraception) during treatment and for at least 5 months after your last dose of BILDYOS.
Tell your doctor right away if you become pregnant while taking BILDYOS.
Are breastfeeding or plan to breastfeed. It is not known if BILDYOS passes into your breast milk. You and your doctor should decide if you will take BILDYOS or breastfeed. You should not do both.
Tell your doctor about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
What should I watch for AFTER starting BILDYOS?
BILDYOS can cause serious side effects.
It is not known if the use of BILDYOS over a long period of time may cause slow healing of broken bones.
The most common side effects of BILDYOS in women being treated for osteoporosis after menopause are back pain, pain in your arms and legs, high cholesterol, muscle pain, and bladder infection.
The most common side effects of BILDYOS in men with osteoporosis are back pain, joint pain, and common cold (runny nose or sore throat).
The most common side effects of BILDYOS in patients with glucocorticosteroid-induced osteoporosis are back pain, high blood pressure, lung infection, and headache.
The most common side effects of BILDYOS in patients receiving certain treatments for prostate or breast cancer are joint pain, back pain, pain in your arms and legs, and muscle pain.
These are not all the possible side effects of BILDYOS. Call your doctor for medical advice about side effects. Tell your doctor if you have any side effect that bothers you or that does not go away.
BILDYOS is an injection that will be given to you by a health care professional. BILDYOS is injected under your skin (subcutaneous).
This is the most important information to know about BILDYOS. For more information, talk to your health care provider.
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit or call 1-800-FDA-1088.
Please read the Medication Guide for BILDYOS, including information about severe hypocalcemia, and discuss it with your doctor. The Physician Prescribing Information also is available.
Cancer care
Gut conditions
Skin conditions
Joint and autoimmune conditions
Bone health