FORSTEO 20 MICROGRAMS/80 MICROLITERS, SOLUTION FOR INJECTION
SpainIt is used to treat osteoporosis in adults, in order to increase bone strength and reduce the risk of fractures by stimulating bone formation.
Frequently asked questions
How should I take FORSTEO?
A dose of 20 micrograms must be administered once daily via a subcutaneous injection, either in the thigh or the abdomen. It is recommended to inject at the same time every day.
When should this medicine not be used?
Do not use it if you are allergic to its components, if you have high calcium levels in your blood, serious kidney problems, bone cancer, or if you have received radiotherapy that affected your bones. It should also not be used in pregnant or breastfeeding women, nor in children and adolescents.
What side effects can FORSTEO cause?
The most frequent effects include pain in the limbs, malaise, headache, and dizziness. Effects such as increased cholesterol, depression, muscle cramps, fatigue, or palpitations may also occur.
What should I do if I miss a dose?
If you miss your usual time, inject as soon as possible on that same day. You must not administer a double dose to make up for the missed one, nor inject more than once a day.
Are there interactions with other medicines?
You must inform your doctor if you are using other medicines, as interactions may occasionally occur, for example with digoxin or digitalis (used for heart diseases).
How should I store the injection pen?
It must always be stored in the refrigerator, between 2°C and 8°C. It must not be frozen. Once the first injection has been started, the pen must be discarded after 28 days, even if it is not empty.
What should I do if I feel dizzy after the injection?
If you feel dizzy, you should sit or lie down immediately. You must not drive or operate machinery until you feel better.
Instructions for use
Package leaflet: Information for the user
Introduction
Package leaflet: Information for the user
FORSTEO 20 micrograms/80 microliters injectable solution in a pre-filled pen
teriparatide
Read all of this leaflet carefully before you start using this medicine because it contains important information for you.
- Keep this leaflet. You may need to read it again.
- If you have any questions, ask your doctor or pharmacist.
- This medicine has been prescribed for you only. Do not pass it on to other people, even if they have the same symptoms as you, because it may harm them.
- If you experience any side effects, talk to your doctor or pharmacist, even if they are not listed in this leaflet. See section 4.
Contents of the leaflet
- What FORSTEO is and what it is used for
- What you need to know before using FORSTEO
- How to use FORSTEO
- Possible side effects
- How to store FORSTEO
- Contents of the pack and other information
1. What FORSTEO is and what it is used for
FORSTEO contains the active substance teriparatide, which is used to increase bone strength and reduce the risk of fractures by stimulating bone formation.
FORSTEO is used for the treatment of osteoporosis in adults. Osteoporosis is a disease that causes your bones to become thin and fragile. This condition is particularly common in women after menopause, but it can also occur in men. Osteoporosis is also common in patients being treated with corticosteroids.
2. What you need to know before using FORSTEO
Your healthcare professional will teach you how to use the FORSTEO pen.
Do not use FORSTEO
- if you are allergic to teriparatide or to any of the other ingredients of this medicine (listed in section 6).
- if you have high levels of calcium (pre-existing hypercalcemia).
- if you have severe kidney problems.
- if you have ever been diagnosed with bone cancer or other types of cancer that have spread (metastasized) to your bones.
- if you have certain bone diseases. If you have a bone disease, consult your doctor.
- if you have elevated levels of alkaline phosphatase in the blood without apparent cause, which could indicate Paget's disease of the bone (a condition involving abnormal bone changes). If you are unsure, consult your doctor.
- if you have received radiation therapy that may have affected your bones.
- if you are pregnant or breastfeeding.
Warnings and precautions
FORSTEO may cause an increase in the amount of calcium in your blood or urine.
Consult your doctor or pharmacist before starting or while using FORSTEO:
- if you continuously experience nausea, vomiting, constipation, low energy, or muscle weakness, inform your doctor. These may be symptoms of having too much calcium in your blood.
- if you suffer from kidney stones or have a history of kidney stones.
- if you have kidney problems (moderate renal failure), inform your doctor.
Some patients may experience dizziness or increased heart rate after the first doses. For the initial doses, use FORSTEO in a place where you can sit or lie down immediately if you feel dizzy.
The recommended treatment duration of 24 months must not be exceeded.
FORSTEO must not be used in growing adults.
Children and adolescents
FORSTEO must not be used in children and adolescents (under 18 years of age).
Other medicines and FORSTEO
Inform your doctor or pharmacist if you are taking, have recently taken, or might need to take any other medicines, as interactions may occasionally occur (e.g., digoxin/digitalis, a medicine used to treat heart conditions).
Pregnancy and breastfeeding
Do not use FORSTEO if you are pregnant or breastfeeding. If you are a woman of childbearing age, you must use effective contraceptive methods during treatment with FORSTEO. If you become pregnant, FORSTEO treatment must be stopped. Consult your doctor or pharmacist before using any medicine.
Driving and using machines
Some patients may feel dizzy after injection of FORSTEO. If you feel dizzy, you must not drive or operate machinery until you feel better.
FORSTEO contains sodium
This medicine contains less than 1 mmol of sodium (23 mg) per dose; essentially "sodium-free".
3. How to use FORSTEO
Follow exactly the instructions given by your doctor for administering this medicine. If you are unsure, consult your doctor or pharmacist again.
The recommended dose is 20 micrograms administered once daily by subcutaneous injection (injection under the skin) in the thigh or abdomen. To help you remember to take your medicine, inject it around the same time each day.
Use FORSTEO every day for as long as your doctor prescribes. The total duration of treatment with FORSTEO must not exceed 24 months. You must not receive more than one 24-month course of treatment with FORSTEO during your lifetime.
FORSTEO may be injected with meals.
Refer to the User Manual included in the pack for instructions on how to use the FORSTEO pen.
Needles are not included with the pen. Becton, Dickinson and Company needles may be used.
The FORSTEO injection should be administered shortly after removing the pen from the refrigerator, as indicated in the User Manual. Return the pen to the refrigerator immediately after use. A new needle must be used for each injection and discarded after use. Do not store the pen with the needle attached. Never share your FORSTEO pen with others.
Your doctor may recommend that you take calcium and vitamin D with FORSTEO. Your doctor will tell you how much you should take each day.
FORSTEO may be used with or without food.
If you use more FORSTEO than you should
If you have accidentally administered more FORSTEO than prescribed, consult your doctor or pharmacist.
Effects that might be expected following an overdose include nausea, vomiting, dizziness, and headache.
If you forget or are unable to inject FORSTEO at your usual time, do so as soon as possible on the same day. Do not administer a double dose to make up for a missed dose. Do not inject more than once in the same day. Do not attempt to make up for a missed dose.
If you stop using FORSTEO
If you are considering stopping treatment with FORSTEO, please consult your doctor. Your doctor will advise you and decide how long you should be treated with FORSTEO.
If you have any further questions about using this medicine, ask your doctor or pharmacist.
4. Possible adverse effects
Like all medicines, this medicine may cause adverse effects, although not everyone experiences them.
The most common adverse effects are limb pain (very common, may affect more than 1 in 10 people), malaise, headache, and dizziness (common). If you feel dizzy after an injection, sit or lie down until you feel better. If symptoms do not improve, consult your doctor before continuing treatment. Cases of fainting associated with the use of teriparatide have been reported.
If you experience discomfort such as redness of the skin, pain, swelling, itching, bruising, or slight bleeding around the injection site (common), these should disappear within a few days or weeks. If they do not, inform your doctor as soon as possible.
Some patients may have experienced allergic reactions immediately after injection, consisting of difficulty breathing, facial swelling, skin rash, and chest pain (rare frequency). Rarely, severe and potentially life-threatening allergic reactions may occur, including anaphylaxis.
Other adverse effects include:
Common: may affect up to 1 in 10 patients
- increased blood cholesterol levels
- depression
- neuralgic leg pain
- feeling faint
- irregular palpitations
- difficulty breathing
- increased sweating
- muscle cramps
- loss of energy
- fatigue
- chest pain
- low blood pressure
- acid reflux (pain or burning sensation just below the sternum)
- vomiting
- hernia of the tube carrying food to the stomach (hiatal hernia)
- low hemoglobin or low red blood cell count (anemia)
Uncommon: may affect up to 1 in 100 patients
- increased heart rate
- abnormal heart sounds
- shortness of breath
- hemorrhoids (piles)
- accidental urine leakage or incontinence
- increased need to urinate
- weight gain
- kidney stones
- muscle and joint pain. Some patients have experienced severe back cramps or pain and required hospitalization.
- increased blood calcium levels
- increased blood uric acid levels
- increased levels of an enzyme called alkaline phosphatase
Rare: may affect up to 1 in 1,000 patients
- reduced kidney function, including renal failure
- swelling, mainly in the hands, feet, and legs
Reporting of adverse effects
If you experience any adverse effect, talk to your doctor or pharmacist, even if it is a possible adverse effect not listed in this leaflet. You can also report them directly through the national reporting system detailed in Appendix V. By reporting adverse effects, you can help provide more information on the safety of this medicine.
5. Storage of FORSTEO
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the packaging and on the pen, as CAD and EXP respectively. The expiry date refers to the last day of the month indicated.
FORSTEO must always be stored in a refrigerator (between 2°C and 8°C). You may use FORSTEO for 28 days after the first injection, provided the pen is kept refrigerated (between 2°C and 8°C).
Do not freeze FORSTEO. Avoid placing the pens near the freezer compartment of the refrigerator to prevent freezing. Do not use FORSTEO if it has been frozen or is frozen.
Each pen must be properly discarded after 28 days, even if it is not completely empty.
FORSTEO contains a clear, colourless solution. Do not use FORSTEO if it contains solid particles, or if the solution is cloudy or discoloured.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines and packaging that you no longer need. This will help protect the environment.
6. Contents of the pack and other information
Composition of FORSTEO
- The active substance is teriparatide. Each milliliter of injectable solution contains 250 micrograms of teriparatide.
- The other components are glacial acetic acid, sodium acetate (anhydrous), mannitol, metacresol, and water for injections. Additionally, a solution of hydrochloric acid and/or sodium hydroxide may have been added to adjust the pH.
Appearance of the product and contents of the pack
FORSTEO is a clear, colourless solution. It is supplied in a cartridge contained within a disposable pre-filled pen. Each pen contains 2.4 ml of solution, sufficient for 28 doses. Pens are available in packs containing one or three pens. Some pack sizes may not be available.
Marketing Authorization Holder
Eli Lilly Nederland B.V., Papendorpseweg 83, 3528 BJ Utrecht, The Netherlands
Manufacturer
Lilly France S.A.S, Rue du Colonel Lilly, F-67640 Fegersheim, France
For more information about this medicinal product, you may contact the local representative of the Marketing Authorization Holder:
Belgium/Belgium/Belgium Eli Lilly Benelux S.A./N.V. Tel/Tel: + 32-(0)2 548 84 84 | Lithuania Eli Lilly Lithuania Tel. + 370 (5) 2649600 |
| Luxembourg/Luxembourg Eli Lilly Benelux S.A./N.V. Tel/Tel: + 32-(0)2 548 84 84 |
Czech Republic ELI LILLY CR, s.r.o. Tel: + 420 234 664 111 | Hungary Lilly Hungária Kft. Tel: + 36 1 328 5100 |
Denmark Eli Lilly Danmark A/S Tlf: + 45 45 26 60 00 | Malta Charles de Giorgio Ltd. Tel: + 356 25600 500 |
Germany Lilly Deutschland GmbH Tel. + 49-(0) 6172 273 2222 | Netherlands Eli Lilly Nederland B.V. Tel: + 31-(0) 30 60 25 800 |
Estonia Eli Lilly Nederland B.V. Tel: +372 6 817 280 | Norway Eli Lilly Norge A.S. Tlf: + 47 22 88 18 00 |
Greece PHARMASERV-LILLY S.A. Tel: + 30 210 629 4600 | Austria Eli Lilly Ges. m.b.H. Tel: + 43-(0) 1 711 780 |
Spain Valquifarma, S.A.U. Tel: + 34-91 623 1732 | Poland Eli Lilly Polska Sp. z o.o. Tel.: + 48 22 440 33 00 |
France Lilly France Tel: + 33-(0) 1 55 49 34 34 | Portugal Lilly Portugal - Pharmaceutical Products, Lda Tel: + 351-21-4126600 |
Croatia Eli Lilly Hrvatska d.o.o. Tel: +385 1 2350 999 | Romania Eli Lilly România S.R.L. Tel: + 40 21 4023000 |
Ireland Eli Lilly and Company (Ireland) Limited. Tel: + 353-(0) 1 661 4377 | Slovenia Eli Lilly farmacevtska družba, d.o.o Tel: +386 (0)1 580 00 10 |
Iceland Icepharma hf. Sími: + 354 540 80 00 | Slovakia Eli Lilly Slovakia s.r.o. Tel: + 421 220 663 111 |
Italy Eli Lilly Italia S.p.A. Tel: + 39- 055 42571 | Finland Oy Eli Lilly Finland Ab Puh/Tel: + 358-(0) 9 85 45 250 |
Cyprus Phadisco Ltd Tel: + 357 22 715000 | Sweden Eli Lilly Sweden AB Tel: + 46-(0) 8 7378800 |
Latvia Eli Lilly (Suisse) S.A. Representation in Latvia Tel: + 371 67364000 | United Kingdom (Northern Ireland) Eli Lilly and Company (Ireland) Limited Tel: + 353-(0) 1 661 4377 |
Date of the most recent review of this leaflet:
Detailed information on this medicine is available on the European Medicines Agency website: http://www.ema.europa.eu/
This leaflet is available on the European Medicines Agency website in all languages of the European Union/European Economic Area.
USER MANUAL FOR THE PEN
Forsteo
FORSTEO 20 micrograms (μg)/80 microliters solution for injection in pre-filled pen
Instructions for Use
Before using your new pen, please read the entire Instructions for Use section. Follow the instructions carefully when using the pen.
Also read the package leaflet included in the package.
Do not share your pen or needles, as this may pose a risk of transmitting infections.
Your pen contains enough medication for 28 days.
Parts of Forsteo
| |
| *Needles are not included. Needles for Becton, Dickinson and Company pen can be used. Consult your doctor or pharmacist to determine the appropriate gauge and length of needle for you. |
Always wash your hands before each injection. Prepare the injection site as instructed by your doctor or pharmacist.
Remove the white cap |
2 Attach the needle |
Remove the tab from the paper. |
Place the needle by pressing it directly onto the medication cartridge. |
Screw the needle on until it is securely attached. |
Remove the outer needle cap and keep it. |
3 Adjust the dose |
|
|
Inner needle cap |
Pull the black injection button until it stops. If you cannot pull the black injection button, see the Troubleshooting section. | Make sure the red band is visible. | Remove the inner needle cap and discard it. |
4 Inject the dose |
Gently pinch your skin on the thigh or abdomen and insert the needle directly beneath your skin. |
Press the black injection button until it stops. Keep it pressed and slowly count to 5. Then, remove the needle from the skin. |
IMPORTANT | ||||
5 Confirm the dose |
| After completing the injection: Once the needle has been removed from the skin, ensure that the black injection button has been fully depressed. If the yellow cylinder is not visible, you have correctly completed the injection steps. |
| DO NOT see any part of the yellow cylinder. If this occurs and the dose has already been injected, do not inject a second dose on the same day. Instead, you MUST readjust your FORSTEO pen (see section Finding and Solving Problems, Problem A). |
6 Remove the needle |
Place the outer needle cap. |
Unscrew the needle completely by turning the outer needle cap 3 to 5 full turns. |
Remove the needle and dispose of it as instructed by your doctor or pharmacist. |
Replace the white cap. Return the FORSTEO pen to the refrigerator immediately after use. |
Instructions on needle handling are not intended to replace local, institutional, or healthcare professional guidelines. |
| Forsteo® FORSTEO, 20 micrograms (µg) 80 microliters injectable solution, prefilled pen. |
Troubleshooting and Resolution | ||
Problem
How do I reset my FORSTEO pen? |
| Solution Follow these steps to reset your FORSTEO pen:
|
You can avoid this issue by always using a NEW needle for each injection and pressing the black injection button fully while counting slowly to 5. | ||
| The FORSTEO pen is designed to deliver a complete dose each time it is used according to the instructions in the Instructions for Use section. The black injection button should be fully depressed to confirm that the full dose has been delivered. Remember to use a new needle for each injection to ensure your FORSTEO pen functions correctly. |
| A small air bubble will not affect your dose or harm you. You may proceed with administering your dose as usual. | |
|
|
| Switch to a new FORSTEO pen to administer your dose as instructed by your doctor or pharmacist. This means you have already used all the medication that could be accurately injected, even though you may see that some medication remains in the cartridge. |
Cleaning and Storage |
Cleaning your FORSTEO pen
Storage of your FORSTEO pen
|
Disposal of Needles and the Pen |
Disposal of FORSTEO Pen Needles and Pen
|
Other Points of Interest |
|
Manufactured by: Lilly France, F-67640 Fegersheim, France for Eli Lilly and Company. This user manual was last reviewed in {Month/Year} |
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The original data is available in the language of the country of manufacture.
Data source: Online Medicines Information Centre (CIMA) — AEMPS
Data last verified: September 21, 2026



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