GP Anastrozole (Arimidex) by Geneza Pharmaceuticals is a true aromatase inhibitor which works by blocking the aromatase enzyme in the body, thus limiting the amount of estrogen buildup that takes place. GP Anastrozole has obvious benefits to bodybuilders who use aromatizing steroids such as testosterone.
Aromatase belongs to the group of cytochrome P450 enzymes that are involved in steroid biosynthesis. It is found within peripheral tissues, including muscle, fat and liver, and within breast tumor cells. Aromatase is the final-step enzyme in oestrogen synthesis, converting the androgens androstenedione and testosterone to the oestrogens oestrone and oestradiol. Aromatase inhibitors work by blocking this converion, thus decreasing the availability of circulating oestrogen. The inhibition of oestrogen production is an effective therapy for women with hormone-dependent breast cancer. The aromatase inhibitors were developed for use in postmenopausal women, where oestrogen is synthesized predominantly by the peripheral conversion of the adrenal steroid androstenedione to oestrone. Anastrozole binds reversibly to the aromatase enzyme and is classed as a type II nonsteroidal aromatase inhibitor. In premenopausal women, the ovaries are the primary sites of oestrogen production. As the aromatase inhibitors are not able to completely block ovarian oestrogen synthesis, they cannot be used as the sole endocrine treatment in premenopausal patients. However, in this patient group, the aromatase inhibitors may be used in combination with agents that suppress ovarian function, such as goserelin, a gonadotrophin-releasing hormone agonist. However, there are only limited data to support this combination.
In men anastrozole stimulates the body to produce more of its own testosterone, the substance fools the body’s negative feedback system, and cause an increase in the pituitary’s release of luteinizing hormone (LH), which in turn stimulates the testicles to make more testosterone. The beauty of this is that the rise in testosterone comes entirely from increased production by the man’s body itself. In concept, this is the most natural form of treatment.
GP Anastrozole (Arimidex) may worsen or cause osteoporosis. Your doctor can discuss the risks of this medication, and ways to help decrease the risk of osteoporosis. Also be sure to inform your doctor if you have or ever had high cholesterol, liver disease, or heart disease.
GP Anastrozole (Arimidex) should only be taken by postmenopausal women who cannot become pregnant. Tell your doctor if you are pregnant or breastfeeding before you begin taking this medication.