Patient Leaflet Updated 28-Aug-2026 | Fresenius Kabi Ltd
Otulfi 45 mg solution for injection in pre-filled pen
Otulfi® 45 mg
solution for injection in pre-filled pen
ustekinumab
▼ This medicine is subject to additional monitoring. This will allow quick identification of new safety information. You can help by reporting any side effects you may get. See the end of section 4 for how to report side effects.
This leaflet has been written for the person taking the medicine.
1. What Otulfi is and what it is used for
2. What you need to know before you use Otulfi
3. How to use Otulfi
4. Possible side effects
5. How to store Otulfi
6. Contents of the pack and other information
Otulfi contains the active substance ‘ustekinumab’, a monoclonal antibody. Monoclonal antibodies are proteins that recognise and bind specifically to certain proteins in the body.
Otulfi belongs to a group of medicines called ‘immunosuppressants’. These medicines work by weakening part of the immune system.
Otulfi administered using pre-filled pen is used to treat the following inflammatory diseases:
Plaque psoriasis
Plaque psoriasis is a skin condition that causes inflammation affecting the skin and nails. Otulfi will reduce the inflammation and other signs of the disease.
Otulfi administered using pre-filled pen is used in adults with moderate to severe plaque psoriasis, who cannot use ciclosporin, methotrexate or phototherapy, or where these treatments did not work.
Psoriatic arthritis
Psoriatic arthritis is an inflammatory disease of the joints, usually accompanied by psoriasis. If you have active psoriatic arthritis you will first be given other medicines. If you do not respond well enough to these medicines, you may be given Otulfi to:
Crohn’s disease
Crohn’s disease is an inflammatory disease of the bowel. If you have Crohn’s disease you will first be given other medicines. If you do not respond well enough or are intolerant to these medicines, you may be given Otulfi to reduce the signs and symptoms of your disease.
Ulcerative colitis
Ulcerative colitis is an inflammatory disease of the bowel. If you have ulcerative colitis, you will first be given other medicines. If you do not respond well enough or are intolerant to these medicines, you may be given Otulfi to reduce the signs and symptoms of your disease
If you are not sure if any of the above applies to you, talk to your doctor or pharmacist before using Otulfi.
Talk to your doctor or pharmacist before using Otulfi. Your doctor will check how well you are before each treatment. Make sure you tell your doctor about any illness you have before each treatment. Also tell your doctor if you have recently been near anyone who might have tuberculosis. Your doctor will examine you and do a test for tuberculosis, before you have Otulfi. If your doctor thinks you are at risk of tuberculosis, you may be given medicines to treat it.
Otulfi can cause serious side effects, including allergic reactions and infections. You must look out for certain signs of illness while you are taking Otulfi. See ‘Serious side effects’ in section 4 for a full list of these side effects.
If you are not sure if any of the above applies to you, talk to your doctor or pharmacist before using Otulfi.
Some patients have experienced lupus-like reactions including skin lupus or lupus-like syndrome during treatment with ustekinumab. Talk to your doctor right away if you experience a red, raised, scaly rash sometimes with a darker border, in areas of the skin that are exposed to the sun or with joint pains.
Heart attack and strokes have been observed in a study in patients with psoriasis treated with ustekinumab. Your doctor will regularly check your risk factors for heart disease and stroke in order to ensure that they are appropriately treated. Seek medical attention right away if you develop chest pain, weakness or abnormal sensation on one side of your body, facial droop, or speech or visual abnormalities.
The Otulfi pre-filled pen is not recommended for use in children and adolescents under 18 years of age with psoriasis or Crohn’s disease because it has not been studied in this age group. The pre-filled syringe or vial should be used instead for children 6 years of age and older and adolescents with psoriasis. The solution for infusion, pre-filled vial or syringe should be used instead for children weighing at least 40 kg with Crohn’s disease.
Otulfi is not recommended for use in children and adolescents under 18 years of age with psoriatic arthritis, or ulcerative colitis or children with Crohn’s disease who weigh less than 40 kg because it has not been studied in this age group.
Tell your doctor or pharmacist:
Otulfi has no or negligible influence on the ability to drive and use machines.
This medicine contains 0.02 mg of polysorbate 80 in each pre-filled pen of 0.5 ml which is equivalent to 0.04 mg/ml. Polysorbates may cause allergic reactions. Tell your doctor if you have any known allergies.
Otulfi is intended for use under the guidance and supervision of a doctor experienced in treating conditions for which Otulfi is intended.
Always use this medicine exactly as your doctor has told you. Check with your doctor if you are not sure. Talk to your doctor about when you will have your injections and follow-up appointments.
Your doctor will decide how much Otulfi you need to use and for how long.
Adults aged 18 years or older
Psoriasis or Psoriatic Arthritis
Crohn’s disease or Ulcerative Colitis
Talk to your doctor if you have any questions about giving yourself an injection.
If you have used or been given too much Otulfi, talk to a doctor or pharmacist straight away. Always have the outer carton of the medicine with you, even if it is empty.
If you forget a dose, contact your doctor or pharmacist. Do not take a double dose to make up for a forgotten dose.
It is not dangerous to stop using Otulfi. However, if you stop, your symptoms may come back. If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Some patients may have serious side effects that may need urgent treatment.
Allergic reactions – these may need urgent treatment. Tell your doctor or get emergency medical help straight away if you notice any of the following signs.
In rare cases, allergic lung reactions and lung inflammation have been reported in patients who receive ustekinumab. Tell your doctor right away if you develop symptoms such as cough, shortness of breath, and fever.
If you have a serious allergic reaction, your doctor may decide that you should not use Otulfi again.
Infections – these may need urgent treatment. Tell your doctor straight away if you notice any of the following signs.
Otulfi may make you less able to fight infections. Some infections could become serious and may include infections caused by viruses, fungi, bacteria (including tuberculosis), or parasites, including infections that mainly occur in people with a weakened immune system (opportunistic infections). Opportunistic infections of the brain (encephalitis, meningitis), lungs, and eye have been reported in patients receiving treatment with ustekinumab.
You must look out for signs of infection while you are using Otulfi. These include:
Tell your doctor straight away if you notice any of these signs of infection. These may be signs of infections such as chest infections, skin infections, shingles or opportunistic infections that could have serious complications. Tell your doctor if you have any kind of infection that will not go away or keeps coming back. Your doctor may decide that you should not use Otulfi until the infection goes away. Also tell your doctor if you have any open cuts or sores as they might get infected.
Shedding of skin – increase in redness and shedding of skin over a larger area of the body may be symptoms of erythrodermic psoriasis or exfoliative dermatitis, which are serious skin conditions. You should tell your doctor straight away if you notice any of these signs.
Common side effects (may affect up to 1 in 10 people):
Uncommon side effects (may affect up to 1 in 100 people):
Rare side effects (may affect up to 1 in 1 000 people)
Very rare side effects (may affect up to 1 in 10,000 people)
If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
Otulfi is for single use only. Any unused product remaining in the pen should be thrown away. Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
Otulfi is a clear, colourless to slightly brown-yellow solution for injection. It is supplied as a carton pack containing 1 single-dose, glass 1 mL pre-filled pen Each pre-filled pen contains 45 mg ustekinumab in 0.5 mL of solution for injection.
This leaflet was last revised in May 2026.
Otulfi 45 mg
solution for injection in pre-filled pen
ustekinumab
This “Instructions for Use” contains information on how to inject OTULFI using the 45 mg/0.5 mL single dose pre-filled pen (OTULFI pre-filled pen).
Read and follow the Instructions for Use that come with your OTULFI pre-filled pen before you start using it and each time you get a refill. There may be new information. This information does not replace talking to your doctor or pharmacist about your medical condition or treatment.
If you have any questions about using your OTULFI pre-filled pen, please call your doctor or pharmacist.
Before you start, check the carton to make sure that it is the right medicine and dose. You will have either a 45 mg dose or 90 mg dose as prescribed by your doctor.
If you receive two 45 mg OTULFI pre-filled pens for a 90 mg dose:
Do not use the OTULFI pre-filled pen if it looks like the carton has been opened.
Do not warm OTULFI pre-filled pen in any other way, such as in a microwave, hot water, or direct sunlight.
Do not remove the clear cap from the OTULFI pre-filled pen until you are ready to inject to avoid injury.
Note: It is normal to see the purple indicator partially visible in the viewing window.
Do not use if the OTULFI pre-filled pen shows signs of damage or if it has been dropped.
Do not use the pre-filled pen if the name on the label is not OTULFI, the dose is not what you are prescribed, or the expiration date on the label has passed.
Note: Air bubbles in the medicine are normal.
Do not inject OTULFI if the medicine is frozen, cloudy, discoloured, or has lumps or particles in it because it may not be safe to use. Call your doctor or pharmacist for instructions.
Note: Rotate to a different injection site (such as other leg, other side of the belly, etc.) for every injection.
Do not inject into skin that is sore (tender), bruised, red, or hard.
Do not inject through clothing.
Do not blow on or touch the site after cleaning.
When you are ready to inject, position the OTULFI pre-filled pen in your hand so you can clearly see the viewing window
Using your other hand, firmly pull the clear cap straight off without twisting (see Figure J).
Note: A few drops of medicine may come out of the needle, this is normal.
Note: Use the OTULFI pre-filled pen within 3 minutes after removing the clear cap to avoid contamination.
Do not try to put the clear cap back on the OTULFI pre-filled pen at any time, even at the end of the injection.
Do not touch the needle cover (the purple-coloured part located at the tip of the OTULFI pre-filled pen) because this might cause an accidental needle stick.
Read all of the remaining instructions in Step 6 before you start injecting to make sure you give the full dose.
Note: To make sure you inject under the skin (into the fatty tissue) do not tilt the OTULFI pre-filled pen.
Do not lift the OTULFI pre-filled pen from the skin when you hear the second click because the medicine may not be fully injected.
Do not try to repeat the injection with a new OTULFI pre-filled pen if the purple indicator did not come all the way down during the injection or you believe you did not get a full injection. Call your doctor or pharmacist if this happens.
Note: The purple needle cover will slide down and cover the needle.
Do not put the clear cap back on the OTULFI pre-filled pen.
Do not rub the injection site.
If you receive two 45 mg OTULFI pre-filled pens for a 90 mg dose, give the second injection right after the first.
Used OTULFI pre-filled pen and clear cap should be placed in a puncture-resistant container, like a sharps container right away after use (see Figure R).
Do not put the clear cap back on the OTULFI pre-filled pen.
Do not throw away (dispose of) your OTULFI pre-filled pen in your household waste.
Any unused medicinal product or waste material and the sharps container should be disposed of in accordance with local requirements.
Antiseptic wipes and other supplies can be disposed of in your garbage.
Always keep the sharps disposal container out of reach of children. Keep OTULFI pre-filled pen and all medicines out of the reach of children.
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