What is testosterone undecanoate 5949 44 0?
Testosterone undecanoate( cas 5949 44 0 )comes in two forms-an injectable form and an oral form.
The injectable form is a long-acting testosterone injection that only requires five injections per year. You'd need to give yourself an intramuscular injection, which can be uncomfortable, but this form of T has a long half-life. This means fewer injections each year than the other forms of testosterone available.
People who start testosterone therapy can generally see masculinization results (body and facial hair growth, deepening of the voice, etc.) within the first 1–2 months, while bone and muscle changes can take 6–12 months.
detail information
CAS: 5949-44-0
MF: C30H48O3
MW: 456.71
Melting point: 59-61°C
Boiling point: 550.7±50.0 °C
Density: 1.03±0.1 g/cm3
Appearance: White powder

Testosterone Undecanoate Uses
This medication is used in men who do not make enough of a natural substance called testosterone. Testosterone belongs to a class of drugs known as androgens. Testosterone helps the body to develop and maintain male sexual characteristics (masculinity), such as a deep voice and body hair. It also helps to maintain muscle and prevent bone loss, and is necessary for natural sexual ability/desire. Testosterone may also be used in certain adolescent boys to cause puberty in those with delayed puberty. This product should not be used in women.
How to use Testosterone Undecanoate Solution
Read the Medication Guide provided by your pharmacist before you start using this medication and each time you receive an injection. If you have any questions, ask your doctor or pharmacist.
This medication is given by injection into the buttock muscle as directed by your doctor. After the first dose, it is usually given 4 weeks later, then every 10 weeks. The dosage is based on your medical condition, testosterone blood levels, and response to treatment.
Use this medication regularly to get the most benefit from it. To help you remember, use a calendar to mark the days you will receive an injection.
Misuse or abuse of testosterone can cause serious side effects such as heart disease (including heart attack), stroke, liver disease, mental/mood problems, abnormal drug-seeking behavior, or improper bone growth (in adolescents). Do not increase your dose or use this drug more often or for longer than prescribed. When testosterone is misused or abused, you may have withdrawal symptoms (such as depression, irritability, tiredness) when you suddenly stop using the drug. These symptoms may last from weeks to months.
Testosterone undecanoate vs. other forms of T
In addition to testosterone undecanoate, there are a other versions of T available by prescription:
Testosterone cypionate, injectable
Testosterone enanthate, injectable
Intranasal gel
Topical gel
The main advantage of taking injectable testosterone undecanoate over the other forms of injectable testosterone is that it requires fewer injections per year. This can be beneficial if you have trouble giving yourself a weekly injection. And, since testosterone undecanoate is the only form of testosterone also available in oral form, your healthcare provider may prescribe testosterone undecanoate if you're a good candidate for oral testosterone therapy.
There are small differences in dosing and absorption between these different forms of testosterone. But, long story short, they're all effective at raising your serum testosterone to "normal" levels. As with any medication, be sure to take the dose exactly as prescribed by a healthcare professional.
What is the dosage for testosterone undecanoate?
Males over 18 years of age: The recommended dose of testosterone undecanoate is 750 mg (3 ml) intramuscularly; followed by 750 mg (3 ml) intramuscularly after 4 weeks, then 750 mg (3 ml) intramuscularly every 10 weeks thereafter.
Safe and effective use of testosterone undecanoate is not determined for males under 18 years of age.
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