Quote from: Dena on May 03, 2017, 10:20:55 PM
A higher estradiol level may lower testosterone as well as a higher Sprio dosage so your doctor may be working the two together in order to determine what your body requires.
I'm not sure about the efficacy of spiro alone in lowering testosterone levels. I can point to a case study of one, me.

Before starting HT, I took spiro in a low dosage for several years for CHF. At one point, I
tripled my intake for three weeks prior to having a routine testosterone test. I didn't get copies of the results so I can't tell you the exact numbers, but the results were testosterone levels dropped from the upper 600's ng/dl to the lower 600's. Not really much of a change.
Roll forward about a year, I started HT which only
doubled the spiro but added a moderate dosage of estradiol, my testosterone levels dropped to the 30's. That's a big change and was on a spiro dosage of 50% less that my ad hoc test. I might add that several years of low dosage spiro did result in significant gynecomastia, so I would assume there's some T blocking going on irrespective of the total T levels.
Just one person's experience.
All the best,
--AshleyP