Formestane is a synthetic androstenedione analog that has been used as an aromatase inhibitor in breast cancer treatment for decades. It is also known by its chemical name 4-hydroxyandrostenedione, and its molecular formula is C19H26O3, with a formula weight of 302.41 g/mol. The CAS number for formestane is 566-48-3.
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Some synonyms for formestane include 4-hydroxyandrostenedione, Lentaron, and 4-OHA.
Health Benefits of Formestane
Formestane is primarily used as a treatment for estrogen receptor-positive breast cancer in postmenopausal women. It works by inhibiting the enzyme aromatase, which converts androgens like testosterone into estrogens like estradiol. By reducing the levels of estrogen in the body, formestane can help slow or stop the growth of breast cancer cells that rely on estrogen to thrive.
Potential Effects of Formestane
While formestane is primarily used as a breast cancer treatment, it has also gained popularity as a performance-enhancing drug among athletes and bodybuilders. This is because it can help reduce the levels of estrogen in the body, which can lead to increased muscle mass and strength. Additionally, formestane may help reduce water retention and improve muscle definition.
Product Mechanism
Formestane works by inhibiting the enzyme aromatase, which is responsible for converting androgens like testosterone into estrogens like estradiol. By reducing the levels of estrogen in the body, formestane can help slow or stop the growth of estrogen receptor-positive breast cancer cells. In bodybuilding and athletics, formestane is used to reduce estrogen levels and increase testosterone levels, leading to improved muscle growth and definition.
Safety
Formestane is generally considered safe when used as directed for breast cancer treatment. However, its safety as a performance-enhancing drug is less clear, as it has not been extensively studied for this purpose. Additionally, formestane has been associated with a number of potential side effects, including joint pain, hair loss, acne, and decreased libido.
Side Effects
Common side effects of formestane include hot flashes, nausea, and fatigue. Less common but more serious side effects may include liver damage, heart problems, and blood clots.
Dosing Information
The recommended dose of formestane for breast cancer treatment is typically 250 mg/day, administered orally. For bodybuilding and athletic purposes, doses of formestane may vary depending on individual goals and needs. It is important to follow dosing instructions carefully and never exceed recommended doses.
Conclusion
Formestane is a powerful aromatase inhibitor that has been used for decades in the treatment of estrogen receptor-positive breast cancer. It works by decreasing the levels of estrogen in the body, which can inhibit the growth of breast cancer cells. While it has gained popularity among athletes and bodybuilders for its ability to increase muscle mass and definition, its use for these purposes is not without potential risks and side effects. As with any supplement or medication, it is important to use formestane only as directed and under the guidance of a healthcare professional
