Dihydrotestosterone (DHT) (referred to as androstanolone or stanolone when used medically) can also be used in place of testosterone as an androgen. The availability of DHT is limited; it is not available in the United States or Canada, for instance, but it is available in certain European countries, including the United Kingdom , France , Spain , Belgium , Italy , and Luxembourg .  DHT is available in formulations including topical gel, buccal or sublingual tablets, and as esters in oil for intramuscular injection.  Relative to testosterone, and similarly to many synthetic AAS, DHT has the potential advantages of not being locally potentiated in so-called androgenic tissues that express 5α-reductase (as DHT is already 5α-reduced) and of not being aromatized into an estrogen (it is not a substrate for aromatase).
High Estradiol : soft erections, inability to maintain an erection; water retention (less frequent urination), leading to excessive sweating, including more than 2-3 pounds of weight loss after an intense cardio workout; blood pressure spikes or high blood pressure (from the water retention); insomnia; hot flushing (flushing around the ears or on the face); night sweats (from estradiol lowering, causing loss of water retention); bloating; brain fog (like your head is in a bubble); testicles seem smaller than usual (not accounted for by testicular atrophy via TRT). Exclusive to high estradiol (usually): soft erections, inability to maintain; water retention; excessive sweating; blood pressure spikes or high blood pressure; brain fog; night sweats; bloating.
This is a very informative article and has helped me understand more about hormone replacement therapy, I am a pre-op MTF transgender and hoping to get onto prescription hormones in the next 12 months. Also, thanks for the amazon purchase link above in the comment reply to patricia for the ‘ ProEstro estrogen pills ‘ – I started taken those pills along with the ‘ Life-Flo Biestro Body Cream ‘ after reading this article and I have noticed an increase in my breast size already for which I am happy and grateful to you.