This information from Lexicomp® explains what you need to know about this medication, including what it’s used for, how to take it, its side effects, and when to call your healthcare provider.
Brand Names: US
Trelstar Mixject; Triptodur
Brand Names: Canada
Decapeptyl; Trelstar
What is this drug used for?
- It is used to treat prostate cancer. If you have been given this drug for some other reason, talk with your doctor for more information.
What do I need to tell my doctor BEFORE I take this drug?
- If you are allergic to this drug; any part of this drug; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
- If you are able to get pregnant or breast-feed. This drug is not approved for use in these patients. If you are pregnant, plan on getting pregnant, or are breast-feeding, talk with your doctor.
This drug may interact with other drugs or health problems.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take this drug?
- Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
- Have your blood work and other lab tests checked as you have been told by your doctor.
- This drug may affect certain lab tests. Tell all of your health care providers and lab workers that you take this drug.
- High blood sugar has happened with this drug. This includes diabetes that is new or worse.
- Check your blood sugar as you have been told by your doctor.
- High cholesterol has happened with this drug. If you have questions, talk with the doctor.
- Raised testosterone levels may happen during the first few weeks after starting drugs like this one. This may cause signs of prostate cancer to get worse during this time. Tell your doctor if you have any new signs like bone pain; an abnormal burning, numbness, or tingling feeling; blood in the urine; or trouble passing urine. Tell your doctor if prostate cancer signs are worse for longer than a few weeks after starting this drug.
- This drug lowers some hormone levels in your body. This may cause some effects like change in breast size, breast soreness or tenderness, testicle changes, trouble getting or keeping an erection, lowered interest in sex, hot flashes, or sweating. Talk with your doctor.
- Lowering male hormones in the body may raise the chance of a type of heartbeat that is not normal called prolonged QT interval. Talk with the doctor.
- The chance of severe and sometimes deadly problems may be raised in people with bladder blockage. It may also be raised in people with growths on or near the spine or spinal cord. If you have questions, talk with your doctor.
- This drug may cause weak bones. This may happen more often if used for a long time. This may raise the chance of broken bones. Call your doctor right away if you have bone pain.
- Behavior and mood changes have happened with the use of drugs like this one in children. This includes acting aggressive, crying, depression, emotional ups and downs, restlessness, and feeling angry and irritable. Call your doctor right away if you have any new or worse behavior or mood changes.
- This drug may affect being able to father a child. Talk with the doctor.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of high blood sugar like confusion, feeling sleepy, unusual thirst or hunger, passing urine more often, flushing, fast breathing, or breath that smells like fruit.
- Signs of liver problems like dark urine, tiredness, decreased appetite, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
- Signs of a urinary tract infection (UTI) like blood in the urine, burning or pain when passing urine, feeling the need to pass urine often or right away, fever, lower stomach pain, or pelvic pain.
- Signs of high blood pressure like very bad headache or dizziness, passing out, or change in eyesight.
- Shortness of breath, a big weight gain, or swelling in the arms or legs.
- Fast or abnormal heartbeat.
- Dizziness or passing out.
- Feeling very tired or weak.
- Trouble moving around.
- Muscle weakness.
- A very bad pituitary gland problem (pituitary apoplexy) has rarely happened with this drug. Most of the time, this has happened within 2 weeks after the first dose. Call your doctor right away if you have a sudden headache, throwing up, passing out, mood changes, eye weakness, not able to move your eyes, or change in eyesight.
- A higher chance of heart attack, stroke, or sudden heart death has been noted when drugs like this were used in males. The chance is low, but get medical help right away if you have chest pain or pressure, weakness on 1 side of the body, trouble speaking or thinking, change in balance, drooping on 1 side of the face, or change in eyesight.
What are some other side effects of this drug?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Not able to get or keep an erection.
- Headache.
- Hot flashes.
- Trouble sleeping.
- Back, muscle, or joint pain.
- Flu-like signs.
- Pain where the shot was given.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.
You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.
How is this drug best taken?
Use this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- It is given as a shot into a muscle.
What do I do if I miss a dose?
- Call your doctor to find out what to do.
How do I store and/or throw out this drug?
- If you need to store this drug at home, talk with your doctor, nurse, or pharmacist about how to store it.
General drug facts
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else’s drugs.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
Consumer Information Use and Disclaimer
This generalized information is a limited summary of diagnosis, treatment, and/or medication information. It is not meant to be comprehensive and should be used as a tool to help the user understand and/or assess potential diagnostic and treatment options. It does NOT include all information about conditions, treatments, medications, side effects, or risks that may apply to a specific patient. It is not intended to be medical advice or a substitute for the medical advice, diagnosis, or treatment of a health care provider based on the health care provider’s examination and assessment of a patient’s specific and unique circumstances. Patients must speak with a health care provider for complete information about their health, medical questions, and treatment options, including any risks or benefits regarding use of medications. This information does not endorse any treatments or medications as safe, effective, or approved for treating a specific patient. UpToDate, Inc. and its affiliates disclaim any warranty or liability relating to this information or the use thereof. The use of this information is governed by the Terms of Use, available at https://www.wolterskluwer.com/en/know/clinical-effectiveness-terms.
Last Reviewed Date
2023-12-14
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