It is a colourless to slightly yellow liquid.
The active substance is satralizumab. Each pre-filled syringe contains 120 mg of satralizumab in 1 mL.
Enspryng contains the active substance satralizumab. It is a type of protein called a monoclonal antibody. Monoclonal antibodies are designed to recognise and attach to a specific substance in the body.
Excipients/Inactive Ingredients: The other ingredients are histidine, aspartic acid, arginine, poloxamer 188, water for injections.
NMOSD is a disease of the central nervous system that mainly affects the optic nerves and spinal cord. It is caused by the immune system (the body's defences) working incorrectly and attacking nerves in the body.
The damage to the optic nerves causes swelling, leading to pain and loss of sight.
The damage to the spinal cord causes weakness or loss of movement in the legs or arms, loss of feeling, and problems with bladder and bowel function.
In an attack of NMOSD, there is swelling in the nervous system. This also happens when the disease comes back (relapse). The swelling causes new symptoms or a return of previous symptoms.
Enspryng blocks the action of a protein called interleukin-6 (IL-6), which is involved in the processes that lead to damage and swelling in the nervous system. By blocking its effects, Enspryng reduces the risk of a relapse or attack of NMOSD.
Enspryng is a medicine for treating neuromyelitis optica spectrum disorders (NMOSD) in adults and young people from 12 years of age.
This medicine should always be taken exactly as prescribed.
How much Enspryng to use: Each injection contains 120 mg of satralizumab. Patients must be advised that the first injection will be given under the supervision of the doctor or nurse.
The first three injections are given once every 2 weeks. These are called 'loading doses'.
After this, the injection is given every 4 weeks. This is called the 'maintenance dose'. The injections should be continued once every 4 weeks for as long as instructed/prescribed.
How to use Enspryng: Enspryng is given by injection under the skin (sub-cutaneously).
The entire content of the syringe should be injected each time.
At the start, Enspryng may be injected by a doctor or a nurse. However, it may be decided that the patient or an adult caregiver can inject Enspryng.
The patient or the caregiver must be advised regarding the training on how to inject Enspryng and questions about giving injections.
Read carefully and follow Instructions for use under Patient Counselling Information on how to inject
Enspryng.
Forgotten administration of Enspryng: For the treatment to be fully effective, it is very important to keep having the injections.
If the doctor or nurse is giving the injections and the patient misses an appointment, the patient must be advised to make another one straight away.
If the patient is injecting Enspryng himself/herself and misses an injection, Enspryng should be injected as soon as possible. Advise the patient not to wait until the next planned dose. After having the injection for the missed dose, the next
injection should be either: for loading doses - 2 weeks later; for maintenance doses - 4 weeks later.
Stopping administration of Enspryng: Enspryng should not be suddenly stopped unless advised/instructed.
Because Enspryng is in a pre-filled syringe, it is unlikely that the patient will receive too much.
Patients should seek medical attention if Enspryng is accidentally injected more than the prescribed dose.
Enspryng should not be administered to patients who are allergic to satralizumab or any of the other ingredients of this medicine (listed in Description).
Patients should seek medical attention immediately if the patient experiences any allergic reaction (see Side Effects).
Before taking Enspryng, caution should be exercised in case of taking, have recently taken or might take any other medicines such as warfarin, carbamazepine, phenytoin and theophylline as doses might need to be adjusted.
Infections: Enspryng cannot be used on patients with infection. Caution should be exercised in case of signs of infection before, during, or after Enspryng treatment such as: fever or chills; cough that does not go away; sore throat; cold sore or genital sores (herpes simplex); shingles (herpes zoster); skin redness, swelling, tenderness or pain; feeling or being sick, diarrhoea or belly pain.
This information can also be found in the patient alert card. Patients must be advised that the alert card should be kept at all times.
The infection should be controlled before giving the Enspryng or allowing the patient to continue to inject Enspryng.
Vaccinations: Before Enspryng administration, caution should be exercised in case of any vaccine given recently or might be given in the near future.
The need to administer any vaccines before starting Enspryng should be checked.
Live or live attenuated vaccines should not be administered (for example BCG for tuberculosis or vaccines against yellow fever) while being treated with Enspryng.
Liver enzymes: Enspryng can have effects on the liver and increase the amount of some liver enzymes in the blood. Blood tests should be done before the patient is given Enspryng, and during the treatment, to check how well the liver is working. Urgent medical advice or treatment may be needed in case of signs of liver damage during or after Enspryng treatment: yellowing of the skin and the whites of the eyes (jaundice); dark-coloured urine; feeling and being sick; abdominal pain.
White blood cell count: Blood tests should be performed before the patient is given Enspryng, and during the treatment, to check the patient's white blood cell count.
Driving and using machines: Enspryng is not likely to affect the ability to drive, cycle or use any tools or machines.
Use in Children: This medicine should not be given to children under 12 years of age. This is because it has not yet been studied in this age group.
Use in Pregnancy & Lactation: See USE IN PREGNANCY & LACTATION section for further information.
Patients must be advised if the patient is pregnant or breast-feeding, thinks she may be pregnant or is planning to have a baby.
The patient may be advised to stop breast-feeding if Enspryng is to be given. It is not known whether Enspryng passes into breast milk.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Allergic reactions: Urgent medical advice or treatment may be needed in case of any signs of allergic reactions during or after the injection. They include: tight chest or wheezing; feeling short of breath; fever or chills; severe dizziness or light-headedness; swelling of the lips, tongue, face; skin itching, hives or rash.
The next dose should not be taken until instructed/advised.
Injection-related reactions (very common: may affect more than 1 in 10 people): In most cases these are mild reactions, but some can be serious.
Urgent medical advice or treatment may be needed in case of any of these signs during or after the injection, particularly in the first 24 hours after the injection: redness, itching, pain or swelling where the injection is given; rash, red or itchy skin or hives; feeling flushed; headache; throat irritation, swelling or pain; feeling short of breath; low blood pressure (dizziness and light-headedness); fever or chills; feeling tired; feeling or being sick, or diarrhoea; fast heart rate, fluttering or pounding heart (palpitations).
Other side effects: Very common (may affect more than 1 in 10 people): headache; joint pain; high levels of blood lipids (fats); low level of white blood cells in tests.
Common (may affect up to 1 in 10 people): feeling stiff; migraine; slow heart beat (bradycardia); increase in blood pressure; being unable to sleep; swelling in the lower legs, feet or hands; rash or itching; allergies or hay fever; stomach inflammation (gastritis), including stomach pain and nausea; weight increase; blood tests showing: low fibrinogen levels (a protein involved in blood clotting), high level of liver enzymes (transaminases, possible sign of liver problems), high level of bilirubin (possible sign of liver problems), low level of platelets (which may lead to bleeding or bruising easily).
Do not throw away any medicines via wastewater or household waste. Patients must be advised on how to throw away medicines no longer used. These measures will help protect the environment.
Store in a refrigerator (2°C-8°C). Do not freeze. Do not use the syringe if it has been frozen. Always keep the syringe dry.
Keep the pre-filled syringes in the outer carton in order to protect from light and moisture.
If unopened and kept in the outer carton, Enspryng may be left out of the refrigerator below 30°C for a single period up to 8 days. Do not return Enspryng to the refrigerator.
Do not use and discard the pre-filled syringe if it has been left out of the refrigerator for longer than 8 days.
Do not use this medicine if it is cloudy, discoloured or contains particles. Enspryng is a colourless to slightly yellow liquid.
The medicine must be injected right after removing the cap and no later than 5 minutes to prevent the medicine from drying out and blocking the needle. If the pre-filled syringe is not used within 5 minutes of removing the cap, it must be disposed in a puncture-resistant container and use a new pre-filled syringe.
L04AC19 - satralizumab ; Belongs to the class of interleukin inhibitors. Used as immunosuppressants.
Enspryng soln for inj 120 mg/mL
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