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Raloxifene, sold under the brand name Evista among others, is a medication used to prevent and treat osteoporosis in postmenopausal women and those on glucocorticoids. For osteoporosis it is less preferred than bisphosphonates. It is also used to reduce the risk of breast cancer in those at high risk. It is taken by mouth.
Read the full article on WikipediaEstablished post-menopausal osteoporosis Clinical criteria: The condition must be stable for the prescriber to consider the listed maximum quantity of this medicine suitable for this patient, AND Patient must have fracture due to minimal trauma, AND Patient must not receive concomitant treatment with any other PBS-subsidised anti-resorptive agent for this condition. The fracture must have been demonstrated radiologically and the year of plain x-ray or computed tomography (CT) scan or magnetic resonance imaging (MRI) scan must be documented in the patient's medical records when treatment is initiated. A vertebral fracture is defined as a 20% or greater reduction in height of the anterior or mid portion of a vertebral body relative to the posterior height of that body, or, a 20% or greater reduction in any of these heights compared to the vertebral body above or below the affected vertebral body.
“Raloxifene is a selective estrogen receptor modulator (SERM) and hence is a mixed agonist and antagonist of the estrogen receptor (ER) in different tissues. It has estrogenic activity in some tissues, such as bone and the liver, and antiestrogenic activity in other tissues, such as the breasts and uterus. Its affinity (Kd) for the ERα is approximately 50 pM, which is similar to that of estradiol. Relative to estradiol, raloxifene has been reported to possess about 8 to 34% of the affinity for the ERα and 0.5 to 76% of the affinity for the ERβ. Raloxifene acts as a partial agonist of the ERα and as a pure antagonist of the ERβ. In contrast to the classical ERs, raloxifene is an agonist of the G protein-coupled estrogen receptor (GPER) (EC50Tooltip half-maximal effective concentration = 10–100 nM), a membrane estrogen receptor.”
“Single-dose: 28 hoursMulti-dose: 33 hours”
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