US residents only

FDA, Food and Drug Administration.

OMLYCLO is as safe and effective as Xolair

OMLYCLO is a biosimilar to Xolair, which means it can be used in its place. A clinical trial proved that OMLYCLO works as well as Xolair and has similar safety when treating chronic spontaneous urticaria (CSU). The FDA also approved OMLYCLO for all the same conditions as Xolair.

OMLYCLO is an effective option for food allergies

Omalizumab has been shown to be effective for people with food allergies. Because omalizumab is the active medicine in OMLYCLO, the same benefit is expected with OMLYCLO. Not for emergency treatment of any allergic reactions.

Getting started on OMLYCLO

Here is what you need to know if your doctor prescribes OMLYCLO.

Starting OMLYCLO
Celltrion CARES Co-Pay Program

You could get OMLYCLO
for as little as

$0* per dose

Got a prescription? Check your eligibility for the Celltrion CARES® Co‑Pay Program.

If eligible, you may pay as little as $0* out of pocket for each dose.

Visit Celltrion CARES

*Only for commercially insured patients. Eligibility criteria and program maximums apply.
Please see full Terms and Conditions .

Frequently asked questions

Answers to common questions about OMLYCLO and biosimilars.

Find out more

IMPORTANT SAFETY INFORMATION

OMLYCLO may cause serious side effects, including:

Severe allergic reactions (anaphylaxis) can happen when you receive OMLYCLO. The reaction can occur after the first dose, or after many doses. It may also occur right after an OMLYCLO injection or days later. Anaphylaxis is a life-threatening condition and can lead to death. Go to the nearest emergency room right away if you have any of these symptoms of an allergic reaction:

  • wheezing, shortness of breath, cough, chest tightness, or trouble breathing
  • low blood pressure, dizziness, fainting, rapid or weak heartbeat, anxiety, or feeling of “impending doom”
  • flushing, itching, hives, or feeling warm
  • swelling of the throat or tongue, throat tightness, hoarse voice, or trouble swallowing

Your healthcare provider will monitor you closely for symptoms of an allergic reaction while you are receiving OMLYCLO and for a period of time after treatment is initiated. Your healthcare provider should talk to you about getting medical treatment if you have symptoms of an allergic reaction.

Cancer. Cases of cancer were observed in some people who received omalizumab.

Inflammation of your blood vessels. Rarely, this can happen in people with asthma who receive OMLYCLO. Tell your healthcare provider right away if you have rash, chest pain, shortness of breath, a feeling of pins and needles, or numbness of your arms or legs.

Fever, muscle aches, and rash. Some people get these symptoms 1 to 5 days after receiving an OMLYCLO injection. If you have any of these symptoms, tell your healthcare provider.

Parasitic infection. Some people who are at a high risk for parasite (worm) infections get a parasite infection after receiving OMLYCLO. Your healthcare provider can test your stool to check if you have a parasite infection.

Heart and circulation problems. Some people who receive OMLYCLO have had chest pain, heart attack, blood clots in the lungs or legs, or temporary symptoms of weakness on one side of the body, slurred speech, or altered vision.

Before receiving OMLYCLO, tell your healthcare provider about all of your medical conditions, including if you:

  • have sudden breathing problems (bronchospasm)
  • have ever had a severe allergic reaction called anaphylaxis
  • have or have had a parasitic infection
  • have or have had cancer
  • are pregnant or plan to become pregnant, are breastfeeding or plan to breastfeed. It is not known if OMLYCLO may harm your unborn baby or if it passes into your breast milk. Talk with your healthcare provider about the best way to feed your baby while you receive and use OMLYCLO.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Do not receive and use OMLYCLO if you are allergic to omalizumab products or any of the ingredients in OMLYCLO.

The most common side effects of OMLYCLO:

In adults and children 12 years of age and older with asthma: joint pain, especially in your arms and legs, dizziness, feeling tired, itching, skin rash, bone fractures, and pain or discomfort of your ears.

In children 6 to less than 12 years of age with asthma: swelling of the inside of your nose, throat, or sinuses; headache, fever, throat infection, ear infection, abdominal pain, stomach infection, and nose bleeds.

In adults with chronic rhinosinusitis with nasal polyps: headache, injection-site reactions, joint pain, upper abdominal pain, and dizziness.

In people with chronic spontaneous urticaria: nausea, headaches, swelling of the inside of your nose, throat, or sinuses, cough, joint pain, and upper respiratory tract infection.

In people with food allergy: injection-site reactions and fever.

These are not all the possible side effects of OMLYCLO. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Please see the Medication Guide and talk with your healthcare provider.

INDICATIONS

What is OMLYCLO?
OMLYCLO® (omalizumab-igec) is an injectable prescription medicine used to treat:

  • moderate to severe persistent asthma in people 6 years of age and older whose asthma symptoms are not well controlled with asthma medicines called inhaled corticosteroids. A skin or blood test is performed to see if you have allergies to year-round allergens. It is not known if OMLYCLO is safe and effective in people with asthma under 6 years of age.
  • chronic rhinosinusitis with nasal polyps (CRSwNP) in people 18 years of age and older when medicines to treat CRSwNP called nasal corticosteroids have not worked well enough. It is not known if OMLYCLO is safe and effective in people with CRSwNP under 18 years of age.
  • food allergy in people 1 year of age and older to reduce allergic reactions that may occur after accidentally eating one or more foods to which you are allergic. While taking OMLYCLO, you should continue to avoid all foods to which you are allergic. It is not known if OMLYCLO is safe and effective in people with food allergy under 1 year of age.
  • chronic spontaneous urticaria (CSU, previously referred to as chronic idiopathic urticaria (CIU), chronic hives without a known cause) in people 12 years of age and older who continue to have hives that are not controlled with H1 antihistamine treatment. It is not known if OMLYCLO is safe and effective in people with CSU under 12 years of age.

OMLYCLO should not be used for the emergency treatment of any allergic reactions, including anaphylaxis, to treat other forms of hives, or sudden breathing problems.

IMPORTANT SAFETY INFORMATION

OMLYCLO may cause serious side effects, including:

Severe allergic reactions (anaphylaxis) can happen when you receive OMLYCLO. The reaction can occur after the first dose, or after many doses. It may also occur right after an OMLYCLO injection or days later. Anaphylaxis is a life-threatening condition and can lead to death. Go to the nearest emergency room right away if you have any of these symptoms of an allergic reaction:

  • wheezing, shortness of breath, cough, chest tightness, or trouble breathing
  • low blood pressure, dizziness, fainting, rapid or weak heartbeat, anxiety, or feeling of “impending doom”
  • flushing, itching, hives, or feeling warm
  • swelling of the throat or tongue, throat tightness, hoarse voice, or trouble swallowing

Your healthcare provider will monitor you closely for symptoms of an allergic reaction while you are receiving OMLYCLO and for a period of time after treatment is initiated. Your healthcare provider should talk to you about getting medical treatment if you have symptoms of an allergic reaction.

Cancer. Cases of cancer were observed in some people who received omalizumab.

Inflammation of your blood vessels. Rarely, this can happen in people with asthma who receive OMLYCLO. Tell your healthcare provider right away if you have rash, chest pain, shortness of breath, a feeling of pins and needles, or numbness of your arms or legs.

Fever, muscle aches, and rash. Some people get these symptoms 1 to 5 days after receiving an OMLYCLO injection. If you have any of these symptoms, tell your healthcare provider.

Parasitic infection. Some people who are at a high risk for parasite (worm) infections get a parasite infection after receiving OMLYCLO. Your healthcare provider can test your stool to check if you have a parasite infection.

Heart and circulation problems. Some people who receive OMLYCLO have had chest pain, heart attack, blood clots in the lungs or legs, or temporary symptoms of weakness on one side of the body, slurred speech, or altered vision.

Before receiving OMLYCLO, tell your healthcare provider about all of your medical conditions, including if you:

  • have sudden breathing problems (bronchospasm)
  • have ever had a severe allergic reaction called anaphylaxis
  • have or have had a parasitic infection
  • have or have had cancer
  • are pregnant or plan to become pregnant, are breastfeeding or plan to breastfeed. It is not known if OMLYCLO may harm your unborn baby or if it passes into your breast milk. Talk with your healthcare provider about the best way to feed your baby while you receive and use OMLYCLO.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Do not receive and use OMLYCLO if you are allergic to omalizumab products or any of the ingredients in OMLYCLO.

The most common side effects of OMLYCLO:

In adults and children 12 years of age and older with asthma: joint pain, especially in your arms and legs, dizziness, feeling tired, itching, skin rash, bone fractures, and pain or discomfort of your ears.

In children 6 to less than 12 years of age with asthma: swelling of the inside of your nose, throat, or sinuses; headache, fever, throat infection, ear infection, abdominal pain, stomach infection, and nose bleeds.

In adults with chronic rhinosinusitis with nasal polyps: headache, injection-site reactions, joint pain, upper abdominal pain, and dizziness.

In people with chronic spontaneous urticaria: nausea, headaches, swelling of the inside of your nose, throat, or sinuses, cough, joint pain, and upper respiratory tract infection.

In people with food allergy: injection-site reactions and fever.

These are not all the possible side effects of OMLYCLO. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Please see the Medication Guide and talk with your healthcare provider.

INDICATIONS

What is OMLYCLO?
OMLYCLO® (omalizumab-igec) is an injectable prescription medicine used to treat:

  • moderate to severe persistent asthma in people 6 years of age and older whose asthma symptoms are not well controlled with asthma medicines called inhaled corticosteroids. A skin or blood test is performed to see if you have allergies to year-round allergens. It is not known if OMLYCLO is safe and effective in people with asthma under 6 years of age.
  • chronic rhinosinusitis with nasal polyps (CRSwNP) in people 18 years of age and older when medicines to treat CRSwNP called nasal corticosteroids have not worked well enough. It is not known if OMLYCLO is safe and effective in people with CRSwNP under 18 years of age.
  • food allergy in people 1 year of age and older to reduce allergic reactions that may occur after accidentally eating one or more foods to which you are allergic. While taking OMLYCLO, you should continue to avoid all foods to which you are allergic. It is not known if OMLYCLO is safe and effective in people with food allergy under 1 year of age.
  • chronic spontaneous urticaria (CSU, previously referred to as chronic idiopathic urticaria (CIU), chronic hives without a known cause) in people 12 years of age and older who continue to have hives that are not controlled with H1 antihistamine treatment. It is not known if OMLYCLO is safe and effective in people with CSU under 12 years of age.

OMLYCLO should not be used for the emergency treatment of any allergic reactions, including anaphylaxis, to treat other forms of hives, or sudden breathing problems.