Image: The piOna auto-injector automates the temperature and injection speed of the viscous progesterone in oil ... The information on this site has been included in good faith for general ...

Marker's synthetic progesterone wasn't effective orally, and had to be given by injection. Patients would have to endure painful shots of huge doses of the drug for it to work. In the early 1950s ...

Medically reviewed by Kelly Wood, MD Hormone replacement therapy (HRT) is a treatment that involves taking hormones to replace depleted estrogen, progesterone, or testosterone levels in your body. An ...