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Delatestryl is a medicine used in males to treat symptoms of hypogonadism (a condition in which the body does not produce enough testosterone), and to stimulate puberty in males with delayed puberty. Delatestryl may also be used in certain women with a type of breast cancer called mammary cancer that has spread to other parts of the body. Delatestryl is give as an intramuscular injection (injected into a muscle).
How does this medication work?
Delatestryl works by supplying the body with testosterone. When used to treat breast cancer, Delatestryl works by stopping the release of estrogen.
What are the beneficial effects of this medication and when should I begin to have results?
Hypogonadism and Breast Cancer: Delatestryl may help control the symptoms associated with your condition.
Delayed Puberty: Delatestryl may help stimulate the growth and development of your male sex organs.
When: Everyone responds differently to treatment, so try to be patient and follow your healthcare provider's directions. It is important that you receive Delatestryl exactly as your healthcare provider has prescribed.
How do I know it is working?
You may notice an improvement in your symptoms when you start receiving Delatestryl. This is a good indicator that the medicine is working. Your healthcare provider may also order tests regularly to check how well this medication is working.
The following is not a full list of side effects. Side effects cannot be anticipated. If any develop or change in intensity, tell your healthcare provider as soon as possible. Only your healthcare provider can determine if it is safe for you to continue taking this medication.
More common side effects may include:
Males: Growth of abnormally large breasts, more frequent or persistent erections.
Females: Missed menstrual periods or other menstrual irregularities.
Less common side effects of Delatestryl may include:
Liver problems with symptoms such as feeling tired or weak, loss of appetite, upper belly pain, dark-colored urine, or yellowing of your skin or the whites of your eyes.
Increased risk of developing an enlarged prostate and prostate cancer in the elderly.
Increased risk of heart attack or stroke.
Blood clots in your legs or lungs, with symptoms such as pain, swelling, or redness of your legs; difficulty breathing; or chest pain.
Salt and water retention, with symptoms such as weight gain and swellings of your legs or ankles.
Development of male sex characteristics in women, including deepening of the voice, male-pattern hair growth, acne, and abnormal enlargement of the clitoris.
Delatestryl may also affect bone growth and height in adolescents.
Your healthcare provider will not administer Delatestryl to you if you are allergic to it or any of its ingredients.
Your healthcare provider will not administer Delatestryl to you if you are a man with known or suspected prostate cancer or breast cancer.
Your healthcare provider will not administer Delatestryl to you if you are or may become pregnant.
Tell your healthcare provider about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Delatestryl. Also, talk to your healthcare provider about your complete medical history, especially if you have heart, kidney, or liver problems; an enlarged prostate; or if you are pregnant, plan to become pregnant, or are breastfeeding.
The information below is based on the dosage guidelines your healthcare provider uses. Depending on your condition and medical history, your healthcare provider may prescribe a different regimen. Do not change the dosage or stop taking your medication without your healthcare provider's approval.
Adults and adolescents: Your healthcare provider will prescribe the appropriate dose for you based on the condition being treated.
Your healthcare provider will administer Delatestryl to you.
You will receive Delatestryl every 2 to 4 weeks, unless you are told otherwise by your healthcare provider.
Do not miss any scheduled follow-up appointments with your healthcare provider.
If Delatestryl is used with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your healthcare provider before combining Delatestryl with the following: blood thinners (such as warfarin), diabetes medicines (such as insulin), oxyphenbutazone, or steroid medicines (such as prednisone).
Delatestryl can harm your unborn baby if you receive it during pregnancy. The effects of Delatestryl during pregnancy are unknown. Do not become pregnant or breastfeed while you are receiving treatment with Delatestryl. Tell your healthcare provider immediately if you are pregnant, plan to become pregnant, or are breastfeeding.
Delatestryl should be given under special circumstances determined by your healthcare provider. If you miss your scheduled dose, contact your healthcare provider or pharmacist for advice.
Your healthcare provider will store this medication for you.
In the event of a medical emergency call your doctor or 9-1-1 immediately. In the event of overdose, call your doctor or poison control for further instructions.
National Poison Control#: Call 1-800-222-1222
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