In the US, codeine is a controlled substance that can only be administered by prescription. Actually your answer is not correct. Cough â¦syrup containing codeine can be purchased from a pharmacist and siging a log book. I am a Pharmacist and at least in Tennessee this is legal.
Aromatase inhibitor: A drug that inhibits the enzyme aromatase and by that means lowers the level of the estrogen estradiol. Aromatase inhibitors represent a class of antiestrogens. Aromatase catalyzes the conversion of testosterone (an androgen) to estradiol (an estrogen) in many tissues including the adrenal glands, ovaries, placenta, testicles, adipose (fat) tissue, and brain. Estrogen is produced directly by the ovaries and is also made by the body using aromatase. Aromatase inhibitors cannot do anything about estrogen produced by the ovaries, but they do interfere with the body's use of aromatase. The growth of many breast cancers is promoted by estrogens.
Aromatase inhibitors (AIs) are a class of drugs used in the treatment of breast cancer and ovarian cancer in postmenopausal women and gynecomastia in men.They may also be used off-label to reduce increase of estrogen conversion during cycle with external testosterone.his counteracts the effect of the aromatase inhibitor in premenopausal women since total estrogen is increased. Ongoing areas of clinical research is optimizing adjuvant hormonal therapy in postmenopausal women with breast cancer.