RAD140 (Testolone) is a Selective Androgen Receptor Modulator (SARM) commonly used for muscle building and strength enhancement. It's crucial to understand that RAD140 is not approved for human use by any major medical regulatory body (like the FDA) and is sold only as a "research chemical." All human data is anecdotal or from limited studies, but the effects on testosterone are well-documented in user reports and preclinical research.
Expected Effects on Testosterone
1.Significant Suppression
○Mechanism: RAD140 suppresses the Hypothalamic-Pituitary-Gonadal (HPG) Axis. It signals the brain to reduce the production of Gonadotropin-Releasing Hormone (GnRH), leading to decreased Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) from the pituitary gland.
○Result: With low LH, the Leydig cells in the testes produce very little testosterone. Suppression is dose and duration dependent. A common cycle (e.g., 10-20mg/day for 8-12 weeks) typically leads to a 50-70%+ drop in total and free testosterone levels by the end of the cycle.
2.Post-Cycle Timeline
○Immediately After Cycle (Week 1-4): Testosterone levels are at their lowest. Users often report symptoms of low testosterone: fatigue, low libido, erectile dysfunction, depression, loss of motivation, and muscle loss.
○Recovery Phase (1-4+ Months): Natural testosterone production gradually resumes as the HPG axis recovers. The speed and completeness of recovery vary based on:
◇Cycle length and dosage.
◇Individual genetics and age.
◇Use of a Post-Cycle Therapy (PCT).
The Role of Post-Cycle Therapy (PCT)
A PCT protocol is commonly used by individuals to attempt to restart natural testosterone production. It typically involves SERMs (Selective Estrogen Receptor Modulators) like Enclomiphene, Clomid (clomiphene), or Nolvadex (tamoxifen) for 4-6 weeks after the RAD140 cycle.
●Purpose: SERMs block estrogen receptors in the brain, tricking it into increasing GnRH, LH, and FSH production to stimulate the testes.
●Important: PCT does not guarantee full or timely recovery. There is no reliable human clinical data on the safety or efficacy of this practice with SARMs. Medical supervision is strongly advised, as improper PCT can have serious side effects.
Summary
●During a RAD140 cycle: Testosterone production is severely suppressed.
●After a cycle: Levels are very low and recover slowly over months, often with the aid of an unregulated PCT protocol.
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