I don’t think it will directly reduce prostate size, it simply won’t put you at risk of enlargement like Testosterone might. If the root cause of your prostate enlargement is from Testosterone, then the only way to mitigate that would be to come off of the Testosterone, lower the dose, or find another alternative method of combatting the problem. Indirectly it could reduce prostate size I suppose because you may be able to get away with a lower dose of Test alongside RAD-140 to achieve the same anabolic benefits as a higher dose of test on its’ own that would pose a higher risk of prostate enlargement.
Users on an oral steroid cycle may experience a sudden increase in body weight and muscular development, insomnia, irritability, aggressive combative behavior, puffy face, severe acne, bad breath, a yellowing of the eyes and skin, premature hair loss, hyperactivity, and exaggerated mood swings that include uncontrollable outbursts of anger. Males may also experience testicular shrinkage and can develop female breast tissue on the pectoral muscles. Females may also experience a deeper voice and decreased breast size. Continued use can result in life-threatening situations involving the liver, cardiovascular system, and brain.