Sustanon

Sustanon 250 is a widely recognized brand name for a testosterone blend medication that contains four different esterified variants of testosterone. Each 1 mL ampoule of Sustanon 250 typically contains:

• Testosterone propionate: 30 mg
• Testosterone phenylpropionate: 60 mg
• Testosterone isocaproate: 60 mg
• Testosterone decanoate: 100 mg

These esters provide a sustained release of testosterone into the bloodstream after injection, which is designed to maintain stable testosterone levels over time. Here’s a breakdown of each component:

1. Testosterone Propionate: This is the shortest-acting ester among the four, which starts acting within a few hours after injection and peaks within 24-48 hours. It typically requires more frequent injections compared to the other esters.
2. Testosterone Phenylpropionate: This ester has a longer duration of action compared to propionate but shorter than decanoate. It maintains stable testosterone levels in the body for about one to two weeks.
3. Testosterone Isocaproate: This ester has a medium duration of action, contributing to the sustained release profile of Sustanon 250. It helps in maintaining stable testosterone levels over several weeks.
4. Testosterone Decanoate: This is the longest-acting ester in Sustanon 250, which extends the release of testosterone to up to four weeks. It provides a slow and steady release of testosterone into the bloodstream.

Medical Uses

Sustanon 250 is primarily prescribed for testosterone replacement therapy (TRT) in males with hypogonadism (low testosterone levels). It helps alleviate symptoms such as low libido, erectile dysfunction, fatigue, and mood disturbances that result from inadequate testosterone production.

Bodybuilding and Performance Enhancement

Outside of medical use, Sustanon 250 is sometimes used illicitly by athletes and bodybuilders to enhance muscle mass, strength, and performance. Its use in this context is controversial and banned by many sports organizations due to its potential for misuse and abuse.

Administration

Sustanon 250 is typically administered via intramuscular injection into the gluteal muscle. Due to the different esters and their varying half-lives, the injection frequency can vary, but it is generally administered every 1-3 weeks for therapeutic purposes.

Side Effects

Common side effects of Sustanon 250 include acne, oily skin, increased hematocrit (red blood cell count), water retention, and gynecomastia (enlargement of breast tissue in males). In high doses or with prolonged use, it can suppress natural testosterone production, potentially leading to testicular atrophy and infertility.