RAD 140 (Testolone) Guide: Results, Dosage, Effects & More! (2020)

RAD 140, otherwise known as Testolone, is a selective androgen receptor modulator (SARM) which has been growing in popularity lately.

Both research and anecdotal evidence show that RAD140 is a highly anabolic SARM, which leads to rapid muscle gains in users.

There is an enormous amount of misinformation regarding RAD-140 (Testolone) out there, so in this article, we’d like to clear it all up.

While Testolone is an extremely powerful anabolic substance, and is currently legal for sale, there’s some facts you should know first.

What is RAD 140 (Testolone)?

RAD 140, otherwise known as Testolone, is a potent SARM which is currently undergoing development by Radius Health, Inc.

While it was initially developed as a treatment for muscle-wasting in cancer patients, it didn’t take long before body builders started using it.

After clinical research showed that RAD-140 leads to rapid muscle growth, many users began taking it for bodybuilding purposes. [R]

In fact, many users have been able to gain 10-15 pounds of muscle from a single 8-12 week RAD 140 (Testolone) cycle, hence the hype around it.

Testolone Overview

Before we explore what the clinical research has to say about RAD 140, let’s first offer a brief overview and look at what this compound has to offer.

Potential Benefits:

  • Rapidly Gain Muscle Mass
  • Great SARM For A Lean Bulk
  • No Negative Prostate Effects
  • Very Accelerated Fat Loss
  • Low Androgenic Side Effects

Potential Side Effects:

  • May Accelerate Hair Loss
  • Suppressed Testosterone Levels
  • Not Approved by the FDA (Yet)
  • Lowered HDL (Good) Cholesterol

Studies have shown that Testolone is 90% as anabolic as testosterone, and has very few androgenic side effects, making it an incredible bulking drug.

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In fact, many users experience rapid muscle gain, of up to 15-20 pounds from a single 12 week cycle, and rapid fat loss too, according to reports.

Testolone is generally considered to be a leaner, dryer version of Ligandrol, helping users get shredded and cut, while gaining muscle at the same time.

How Does RAD140 Work?

sarms androgen receptors

RAD 140, similar to other SARMs such as Ostarine and Ligandrol, works by binding to your body’s androgen receptors, signalling them to grow.

Shortly after ingestion, studies show that RAD140 quickly begins binding to skeletal muscle androgen receptors, leading to rapid muscle growth.

This is what gives SARMs their potent anabolic, muscle building properties—they bind to your body’s androgen receptors, which signals your body to grow muscle and burn fat. [R]

Many people often compare SARMs to being “legal steroids,” and while SARMs are, in fact legal, there are some critical differences to understand.

RAD 140 vs. Steroids

While RAD-140 and other SARMs have very anabolic effects that are comparable to a low dose cycle of steroids, their mechanism of action is much different.

Steroids work by binding to all of your body’s androgen receptors—whether they’re in muscles you want to grow, like your biceps and triceps, or muscles you don’t want to grow, like your prostate muscles. [R]

SARMs, on the other hand, have a high affinity to skeletal muscles, meaning they avoid binding to the muscles you don’t want to grow, and target the muscles that you do want to grow.

This has led many body builders to say that SARMs are like steroids without side effects, however this isn’t entirely true—we will cover this later on.

RAD 140 (Testolone) Benefits

muscular man lifting weights

Many people choose to take RAD-140 for the incredible muscle building effects it has, although technically it has not been approved for human use.

In terms of bulking SARMs, RAD 140 is one of the best. While it may not be as strong as Ligandrol, it gives your body more of a “cut and dry” look.

Here are some benefits of RAD140:

  • Rapid Muscle Growth
  • Increased Strength
  • Higher Bone Density
  • Better Athletic Performance
  • Accelerated Fat Loss

Many users who take RAD 140 recreationally report gaining 10-15 pounds of muscle and losing fat at the same time, making RAD 140 a phenomenal SARM for both bulking and recomposition.

RAD 140 Results

Copyright @ https://www.masculinedevelopment.com/

The picture above was taken from Masculine Development, where Jon Anthony reported his RAD 140 results from a 60 day cycle.

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The RAD 140 results pictured above were from taking a dosage of 30mg of Testolone per day, for a full 60 days, or an 8 week cycle.

It’s important to note that 30 mg of RAD140 is a relatively high dose, being on the upper end of what body builders typically take for muscle growth.

As you can see, however, it’s quite possible to get steroid-like effects from a single cycle of Testolone, as it’s extremely anabolic when it comes to SARMs.

RAD 140 Dosage

sarms vials from different vendors

While there is no medically established dosage of RAD 140, we can learn a lot by looking at anecdotal evidence and user cycle logs.

Here are the RAD 140 dosage guidelines:

  • Beginner: 10 mg per day
  • Intermediate: 20 mg day
  • Advanced: 30 mg day

While there is no established dose for Testolone, studies have found that even taking 0.1 mg per kg can lead to gains of more than 10% in 28 days. [R]

Most beginners choose to start off by taking 15 mg of RAD 140 per day for 8 weeks, which is equal to one full dropper of RAD140 Science Bio.

Bulking & Cutting Stacks

Due to its versatility as a SARM, Testolone (RAD140) works well when combined with other SARMs, depending on your body building goals.

This is what’s called a “SARMs stack,” where users choose to take multiple SARMs at once, to get the most muscle-building and fat-shredding possible.

Sample Bulking StackSample Cutting Stack
RAD 140 – 20mg/dayRAD 140 – 20mg/day
Ligandrol – 10mg/dayCardarine – 10mg/day
YK11 – 10mg/dayAndarine – 50mg/day
Sample RAD 140 Bulking & Cutting Stacks

Doing a 12 week bulking stack of RAD140, users can expect to gain 15-20 pounds in 2-3 months, and can expect to keep 85% or so of your gains.

Doing a 12 week cutting stack of RAD140, on the other hand, might aid users in losing 10-15 pounds within 2-3 months, with all of it staying off (assuming that your diet and training stay the same).

Post Cycle Therapy (PCT)

SARMs do, in fact, suppress your natural testosterone production, so doing a post cycle therapy (or PCT for short) is highly recommended.

Here is a good post cycle therapy to run after you finish your Testolone bulking or cutting cycle, to get your testosterone levels back up:

Weeks After CycleNolvadexClomid
Weeks 1-240mg/day50mg/day
Weeks 3-420mg/day25mg/day
Sample PCT to Run After SARMs Cycle

In other words, after you finish your SARMs cycle, begin your PCT the day after your SARMs run out. Most SARMs will be out of your system within 2-3 days due to their short half lives, so you can run begin a SARMs PCT sooner than a steroids PCT.

To buy real, high quality SARMs PCT, we recommend going through Swiss Chems—both their Nolvadex and Clomid are HPLC tested for purity.

RAD 140 (Testolone) Side Effects

While most users tolerate SARMs very well, it is important to note that there are still some potential side effects to be aware of while on cycle.

The effects of Testolone (RAD140) are dose dependent, meaning that if you take a higher dosage, you will likely not only experience more muscle growth and fat loss, but also potentially worse side effects.

Here are the most common RAD 140 side effects:

  • Moderate Testosterone Suppression
  • Lowered “Good” Cholesterol (HDL)
  • Mild Levels of Liver Toxicity
  • Increased Aggression Levels
  • Accelerated Hair Loss

While many of these side effects can be mitigated by taking the proper supplements on cycle, it’s also important to note that more research is needed to determine the longer term side effects of RAD140.


In summary, Testolone, or RAD 140, is a potent selective androgen receptor modulator, which is known for its highly anabolic effects.

Many compare the muscle gains from RAD 140 to a low dose steroid cycle, making it a popular steroid alternative for body builders.

If you’re looking for 99% pure, 3rd party verified Testolone (RAD 140), then we recommend you get it from a vendor like Science Bio.

Each batch of their SARMs is tested for purity by an independent laboratory, and if you use the code “nanotech” you’ll save 10% off your purchase.

Frequently Asked Questions
❓ Is RAD 140 Good For Bodybuilding?

RAD 140 is an exceptionally powerful SARM and is a phenomenal choice for bodybuilding. In fact, many bodybuilders report gaining upwards of 20 pounds of muscle from a single RAD 140 cycle, while burning ample fat at the same time.

❓ How Does RAD 140 Work in the Body?

RAD 140, similar to other SARMs, works by binding to androgen receptors in the skeletal muscle tissue shortly after ingestion. It rapidly begins signalling muscles to grow, recover faster, and to increase their metabolic rate. This leads to accelerated muscle growth.

❓ What is RAD 140 Used For?

RAD 140 (Testolone) is most commonly used to do a lean bulk, although it's a fairly versatile SARM that can be used for bulking, cutting, and even a recomposition (recomp). It really excels when it comes to getting lean gains, however - users love RAD 140 for this purpose.

❓ What's The Best RAD 140 Dosage to Take?

Typically users take between 10-20mg of RAD 140 per day, although some experienced users have taken over 30mg per day. That being said, the best dosage of RAD 140 is typically going to be 15mg per day, especially if you're a beginner with little to no experience.

❓ Does RAD 140 Require A PCT?

Studies have shown that RAD 140 does, in fact, suppress testosterone, and while it's not nearly as suppressive as other SARMs, or steroids, we still do recommend using a post cycle therapy to ensure you not only keep your gains, but get your natural testosterone production back to normal.

Nanotech Project Team

The Nanotech Project team is committed to providing the most accurate and up-to-date information about anabolics, nootropics, and bio-hacking as a whole.

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