RAD-140 (Testolone)

RAD140, widely known as Testolone, is one of the most potent selective androgen receptor modulators currently available and is often favored by those looking for a significant step up from the milder effects of Ostarine.

It was originally developed to treat muscle wasting and breast cancer due to its high affinity for androgen receptors in muscle and bone tissue while demonstrating a unique ability to protect brain neurons. For performance users, it is prized for its ability to deliver a very dry and hard look, often being compared to the cosmetic results of mild DHT derivatives. Unlike other compounds that may cause a soft or watery appearance, Testolone provides a distinct increase in vascularity.

The dosing for RAD140 usually falls between 10 mg and 20 mg per day, though some experienced users experiment with higher amounts despite diminishing returns. While early anecdotal reports suggested a 24 hour half life, more recent pharmacokinetic data indicates a much longer elimination half life of approximately 60 hours. This means the compound builds up in the system significantly over time, and some users choose to dose every other day to mitigate side effects.

Because it is so potent, Testolone is highly suppressive to natural hormone production. It is common to see a 60% to 80% drop in natural testosterone levels by the end of a cycle, making the use of a testosterone, or SERM base like enclomiphene almost mandatory.

Some users also report aggressiveness, alongside potential hair shedding for those who are genetically prone to male pattern baldness.

Supporting the body during a Testolone cycle requires a focused approach to liver and cardiovascular health. It can be quite harsh on cholesterol levels, often causing a sharp decline in HDL and an increase in LDL, which makes daily supplementation with of fish oil essential. Even though it is not a traditional oral steroid, it does place a measurable strain on the liver, so incorporating 1200 mg of NAC daily is a standard safety precaution.