Patient Leaflet Updated 20-Oct-2026 | Takeda UK Ltd
Prostap 3 DCS
PROSTAP® 3 DCS
11.25 mg Powder and Solvent for Prolonged-release Suspension for Injection in Prefilled Syringe
leuprorelin acetate
1. What PROSTAP 3 is and what it is used for
2. What you need to know before you are given PROSTAP 3
3. How to use PROSTAP 3
4. Possible side effects
5. How to store PROSTAP 3
6. Contents of the pack and other information
PROSTAP 3 is a synthetic hormone which can be used to reduce the levels of testosterone and estrogen (sex steroids) circulating in the body.
PROSTAP 3 is used to treat prostate cancer in men and to treat hormone responsive early stage breast cancer in pre and perimenopausal women at higher risk of recurrence and hormone responsive advanced breast cancer in pre and perimenopausal women. PROSTAP 3 can also be used in women to treat endometriosis.
PROSTAP 3 is used to treat premature puberty which is caused by a release of certain hormones from the pituitary gland (central precocious puberty) in girls under 9 years of age and boys under 10 years of age. Your doctor will make a precise diagnosis of central precocious puberty.
When you or your child begin treatment with PROSTAP 3, existing symptoms may initially get worse as a result of levels of sex steroids in the body increasing. These worsening symptoms usually subside with continued use of PROSTAP 3 (see section 4 for further information).
Severe skin rashes including Stevens-Johnson syndrome, Toxic Epidermal Necrolysis (SJS/TEN) have been reported in association with leuprorelin. Stop using leuprorelin and seek medical attention immediately if you notice any of the symptoms related to these serious skin reactions described in section 4.
Talk to your doctor or nurse before being given PROSTAP 3:
Men, women and children:
Both men and women:
Women only:
Men only:
In children:
In girls with central precocious puberty:
Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription.
PROSTAP 3 might interfere with some medicines used to treat heart rhythm problems (e.g. quinidine, procainamide, amiodarone and sotalol) or might increase the risk of heart rhythm problems when used with some other drugs (e.g. methadone (used for pain relief and part of drug addiction detoxification), moxifloxacin (an antibiotic), antipsychotics used for serious mental illnesses).
In women and girls there are no known interactions with other medicines.
PROSTAP 3 must not be given to pregnant or breast-feeding women or girls (see also section “Do not use PROSTAP 3’).
Do not drive or operate machinery if you experience tiredness, dizziness or visual disturbances whilst being treated with PROSTAP 3.
This medicine contains 1 mg of polysorbate 80 in each ml of suspension which is equivalent to 1 mg/ml. Polysorbates may cause allergic reactions. Tell your doctor if you have or your child has any known allergies.
This medicine contains less than 1 mmol sodium (23 mg) per injection, that is to say it is essentially ‘sodium-free’.
PROSTAP 3 should only be administered by your doctor or a nurse who will also take care of the preparation of the product.
The doctor or nurse will give you an injection of PROSTAP 3. The injection should be given immediately after it has been prepared. The injection will normally be given in your arm, thigh or abdomen. The injection site should be varied at regular intervals.
You will normally be given an injection once every 3 months.
If you have early breast cancer, you will be given PROSTAP 3 every three months in combination with tamoxifen or an aromatase inhibitor. A minimum of one injection of PROSTAP 3 should be given before you start treatment with an aromatase inhibitor or tamoxifen.
If you have advanced breast cancer, you will be given PROSTAP 3 every three months as an add-on to your other breast cancer treatment.
If you have endometriosis you will be given an injection of PROSTAP 3 for a period of up to 6 months only and treatment will be initiated during the first five days of the menstrual cycle.
Treatment of children should be under the overall supervision of the paediatric endocrinologist.
The dosing scheme needs to be adapted individually.
The recommended starting dose is dependent on the body weight:
a) Children with a body weight 20 kg or more
Unless prescribed otherwise, 1 ml PROSTAP 3 (11.25 mg leuprorelin acetate) is administered every 3 months under the skin of e.g. abdomen, bottom or thigh as a single injection.
b) Children with a body weight less than 20 kg
Taking into account the clinical activity of the central precocious puberty in these rare cases, the following applies:
Unless prescribed otherwise, 0.5 ml PROSTAP 3 (5.625 mg leuprorelin acetate) are administered every 3 months under the skin of e.g. abdomen, bottom or thigh as a single injection. The remainder of the suspension will be discarded. Your doctor will monitor the child’s weight gain.
Depending on the central precocious puberty activity, your doctor may increase the dosage in the presence of inadequate suppression (e.g. vaginal bleeding). Your doctor will determine the minimal effective dose with the help of a blood test.
The duration of treatment depends on the clinical signs at the start of treatment or during the course of treatment and is decided by your doctor together with the legal guardian and, if appropriate, the treated child. Your doctor will determine the bone age of the child in regular intervals.
In girls with bone maturation of older than 12 years and boys with bone maturation of older than 13 years your doctor will consider discontinuing the treatment, depending on the clinical effects in your child.
In girls, pregnancy should be excluded before the start of treatment. The occurrence of pregnancy during treatment cannot be generally excluded. In such cases, please talk to your doctor.
The therapy is a long-term treatment, adjusted individually. Please arrange with your doctor that PROSTAP 3 is administered as precisely as possible in regular 3-monthly periods. An exceptional delay of the injection date for a few days (90 ± 2 days) does not influence the result of the therapy.
As soon as you realise you have missed an injection, contact your doctor who will be able to give you your next injection.
Women only:
If a PROSTAP 3 injection is missed, breakthrough bleeding or ovulation may occur with the potential for you to become pregnant. If you think you may be pregnant you should stop using PROSTAP 3 and contact your doctor immediately.
If you are being given PROSTAP 3 for the treatment of advanced or early breast cancer, you must not stop your treatment with PROSTAP 3 whilst you are taking an aromatase inhibitor. If you are going to discontinue treatment with PROSTAP 3, your aromatase inhibitor treatment must also be discontinued within 3 months of your last PROSTAP 3 injection.
Like all medicines, PROSTAP 3 can cause side effects, although not everybody gets them.
Men
Very common (may affect more than 1 in 10 people)
Weight changes, hot flushes, sweating, muscle weakness, bone pain, loss of interest in sexual intercourse, inability to have an erection, a reduction in size and function of the testes, tiredness or skin reactions at the injection site (these include skin hardening, redness, pain, abscesses, swelling, nodules, ulcers and skin damage).
Common (may affect up to 1 in 10 people)
Loss of appetite, difficulty sleeping, depression, mood changes (with long-term use), headache, nausea, abnormalities in liver function or liver blood tests, joint pain, swelling of the breast tissue or swelling in your ankles or hands.
Uncommon (may affect up to 1 in 100 people)
Fatty liver, mood changes (with short-term use), dizziness, tingling in the hands or feet, diarrhoea, vomiting, muscle ache or weakness in the legs.
Very rare (may affect up to 1 in 10,000 people):
In patients with existing tumours of the pituitary gland, bleeding of the pituitary gland may occur.
Not known (frequency cannot be estimated from the available data)
Blood tests may show anaemia (low red cell counts), low counts in white cells or platelets, allergic reactions (may include symptoms of rash, itching, wheals or a serious allergic reaction which causes difficulty breathing or dizziness), changes in blood fats (lipids or cholesterol) or blood sugar, suicidal ideation, paralysis, seizure, altered vision, pounding heartbeats, changes in ECG (QT prolongation), blood clots in lungs, high or low blood pressure, jaundice, fracture of the spine, thinning of bone, difficulty passing urine, fever, chills, inflammation of lungs or lung disease, idiopathic intracranial hypertension (increased intracranial pressure around the brain characterised by headache, double vision and other visual symptoms and ringing or buzzing in one or both ears). If you experience reddish non-elevated, target-like or circular patches on the trunk, often with central blisters, skin peeling, ulcers of mouth, throat, nose, genitals and eyes. These serious skin rashes can be preceded by fever and flu- like symptoms (Stevens-Johnson syndrome/Toxic Epidermal Necrolysis).
Skin redness and itchy rash. (Toxic skin eruption)
A skin reaction that causes red spots or patches on the skin, that may look like a target or "bulls-eye" with a dark red centre surrounded by paler red rings (Erythema Multiforme).
Women
Very common (may affect more than 1 in 10 people)
Difficulty sleeping, headaches, hot flushes or bone pain
Common (may affect up to 1 in 10 people)
Weight changes, mood changes (with long-term use), depression, tingling in hands or feet, dizziness, nausea, joint pain, muscle weakness, breast tenderness, changes in breast size, vaginal dryness, excessive sweating, swelling in ankles or hands, or skin reactions at the injection site (these include skin hardening, redness, pain, abscesses, swelling, nodules, ulcers and skin damage)
Uncommon (may affect up to 1 in 100 people)
Fatty liver, loss of appetite, mood changes (with short-term use), changes in blood lipids (cholesterol), altered vision, pounding heartbeats, diarrhoea, vomiting, abnormalities in liver blood tests, hair loss, muscle aches, fever or tiredness
Very rare (may affect up to 1 in 10,000 people):
In patients with existing tumours of the pituitary gland, bleeding of the pituitary gland may occur.
Not known (frequency cannot be estimated from the available data)
Blood tests may show anaemia (low red cell counts), low counts in white cells or platelets, allergic reactions (may include symptoms of rash, itching, wheals or a serious allergic reaction causing difficulty breathing or dizziness), changes in blood sugar, suicidal ideation, paralysis, blood clots in the lungs, high or low blood pressure, jaundice, abnormalities in liver function, fracture of the spine, seizure, thinning of bone, vaginal bleeding, inflammation or infection of the vagina (which can cause itching, discomfort and discharge), reduced sex drive, chills, inflammation of lungs or lung disease, idiopathic intracranial hypertension (increased intracranial pressure around the brain characterised by headache, double vision and other visual symptoms and ringing or buzzing in one or both ears). If you experience reddish non-elevated, target-like or circular patches on the trunk, often with central blisters, skin peeling, ulcers of mouth, throat, nose, genitals and eyes. These serious skin rashes can be preceded by fever and flu- like symptoms (Stevens-Johnson syndrome/Toxic Epidermal Necrolysis).
Skin redness and itchy rash. (Toxic skin eruption)
A skin reaction that causes red spots or patches on the skin, that may look like a target or "bulls-eye" with a dark red centre surrounded by paler red rings (Erythema Multiforme).
The following side effects have been seen when a similar class of medicine called GnRH analogues (Gonadotrophin Releasing Hormone analogues) has been used for breast cancer in combination with either tamoxifen or an aromatase inhibitor:
Very common (may affect more than 1 in 10 people)
Nausea, feeling very tired, joint and muscle pain, osteoporosis, hot flushes, excessive sweating, difficulty in sleeping, depression, decreased libido, dryness of the vagina, pain during or after sexual intercourse, urinary incontinence, increased blood pressure.
Common (may affect up to 1 in 10 people)
Diabetes, high blood sugar (hyperglycaemia), pain, bruising, redness and swelling at injection site, allergic reaction, bone fractures, blood clot in a blood vessel.
Uncommon (may affect up to 1 in 100 people)
Bleed in the brain, lack of blood supply to the brain or the heart.
Rare (may affect up to 1 in 1000 people)
Change in ECG (QT prolongation)
In the initial phase of treatment, a short-term rise in the sex hormone levels occurs, followed by a fall to values within the prepuberty range. Due to this effect, side effects may occur particularly at the start of treatment.
Common (may affect up to 1 in 10 people):
Mood swings,
depression, headache,
abdominal pain/abdominal cramps,
feeling sick/vomiting,
acne,
vaginal bleeding,
vaginal spotting,
vaginal discharge,
injection site reactions (these include hardening, redness, pain, abscesses, swelling, nodules, ulcers and skin damage)
Uncommon (may affect up to 1 in 100 people):
Fatty liver
Muscle ache
Very rare (may affect up to 1 in 10,000 people):
General allergic reactions (symptoms include fever, rash, itching, wheals or chills). If your child has a serious allergic reaction which causes difficulty in breathing or dizziness, contact your doctor immediately or go to the hospital. In patients with existing tumours of the pituitary gland, bleeding of the pituitary gland may occur.
Not known (frequency cannot be estimated from the available data):
Suicidal ideation, seizure, inflammation of lungs or lung disease, idiopathic intracranial hypertension (increased intracranial pressure around the brain characterised by headache, double vision and other visual symptoms and ringing or buzzing in one or both ears). If you experience reddish non-elevated, target-like or circular patches on the trunk, often with central blisters, skin peeling, ulcers of mouth, throat, nose, genitals and eyes. These serious skin rashes can be preceded by fever and flu- like symptoms (Stevens-Johnson syndrome/Toxic Epidermal Necrolysis).
Skin redness and itchy rash. (Toxic skin eruption)
A skin reaction that causes red spots or patches on the skin, that may look like a target or "bulls-eye" with a dark red centre surrounded by paler red rings (Erythema Multiforme).
Notes:
In general, if vaginal bleeding (spotting) occurs with continued treatment (after possible withdrawal bleeding in the first month of treatment), this may be a sign of potential underdosage. Please tell your doctor if vaginal bleeding occurs.
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 the 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.
Keep out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the packaging. The expiry date refers to the last day of that month.
Do not store above 25°C.
Do not refrigerate or freeze.
Store in the original container in order to protect from light.
Once mixed with the Sterile Solvent, the suspension must be used immediately.
If the pack has been opened or damaged, return it to your pharmacist.
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 to protect the environment.
PROSTAP 3 is a prolonged release powder for use in an injection.
The Sterile Solvent is a clear liquid, which is mixed with the PROSTAP 3 Powder before injection.
Each pack contains a pre-filled dual chamber syringe containing 11.25 mg leuprorelin acetate powder in the front chamber and 1 ml of Sterile Solvent in the rear chamber.
This leaflet does not contain the complete information about your medicine. If you have any questions or you are not sure about anything you should ask your doctor or pharmacist who can give you more information. The information in this leaflet applies only to PROSTAP 3.
This leaflet was last revised in October 2026.
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