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    Glossary Testosterone Undecanoate

    long-acting testosterone ester used in hormone replacement therapy

    Testosterone Undecanoate (TU) is a long-acting ester of testosterone used primarily in hormone replacement therapy for men with low testosterone levels. It is administered either orally or via intramuscular injection and helps maintain stable testosterone levels in the body, which can improve symptoms such as fatigue, low libido, and muscle weakness.

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    1. Finasteride Popular 5-alpha reductase inhibitor that lowers DHT, taken as a pill or used topically
    2. Dutasteride 5-alpha reductase inhibitor that blocks both enzyme types, a stronger DHT blocker than finasteride
    3. Bicalutamide Nonsteroidal anti-androgen, originally a prostate cancer drug
    4. Cyproterone a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor
    5. Saw Palmetto Palm-berry extract taken as a supplement