RAD-140 (Testolone): The Honest SARM Review — My Bloodwork, My Gains, My Warnings

RAD-140, also called Testolone, is the SARM that most lifters reach for when they want anabolic results without the legal exposure of injectable testosterone esters. For years it’s been hyped as “as good as testosterone, with none of the side effects.” That’s marketing nonsense. RAD-140 has very real side effects, very real suppression, and a very real risk profile that the supplement-store crowd downplays because they’re selling it.

I’ve run RAD-140 multiple times. I’ve pulled bloodwork before, during, and after. I have specific opinions, real numbers, and honest warnings. Here’s the unsanitized version.

What RAD-140 Actually Does

RAD-140 is a selective androgen receptor modulator. It binds to the androgen receptor with strong affinity in muscle and bone tissue, much weaker affinity in the prostate, skin, and other androgen-target tissues. The “selective” claim was the foundation of the entire SARM marketing pitch — get muscle gains without the prostate enlargement, hair loss, or oil-skin acne of high-dose testosterone.

That selectivity is partially true and partially a comforting story. RAD-140 absolutely does drive muscle hypertrophy. Anyone who tells you SARMs don’t work hasn’t taken them. But “selective” doesn’t mean “side-effect-free” — it means “the side-effect profile is different from testosterone,” not “the side-effect profile is empty.”

My Cycle Protocol

The RAD-140 cycle I’ve personally found tolerable and effective:

• Dose: 10 mg per day, oral
• Cycle length: 8 weeks
• Timing: Single morning dose with food
• Stack: Solo first time. After that, occasionally with low-dose MK-677 for sleep and recovery
• PCT: Mandatory — see below
• Off-cycle: Minimum 12 weeks before considering another cycle

The bro-science crowd pushes 20-30 mg daily of RAD-140. Don’t. The dose-response curve flattens hard above 10 mg, and the side effects scale linearly while the gains plateau. You get marginally more muscle and substantially more suppression, more aggression, more lipid disruption. Stay at 10 mg.

What the Bloodwork Showed

Here’s the actual data from one of my 8-week 10 mg/day cycles. Pre-cycle baseline, week 6 mid-cycle, and week 4 post-PCT:

• Total testosterone: 850 baseline → 142 mid-cycle → 620 post-PCT (still recovering)
• Free testosterone: 22 baseline → 4 mid-cycle → 16 post-PCT
• LH: 4.2 baseline → less than 0.1 mid-cycle → 3.1 post-PCT
• FSH: 3.8 baseline → less than 0.1 mid-cycle → 2.9 post-PCT
• SHBG: 28 baseline → 19 mid-cycle (RAD-140 suppresses SHBG, exposing more free hormone)
• HDL cholesterol: 58 baseline → 34 mid-cycle → 51 post-PCT
• LDL cholesterol: 92 baseline → 134 mid-cycle → 102 post-PCT
• ALT: 28 baseline → 64 mid-cycle (mildly elevated) → 32 post-PCT
• AST: 24 baseline → 51 mid-cycle (mildly elevated) → 26 post-PCT

Read that carefully. Endogenous testosterone production was crushed. LH and FSH were both essentially zero by mid-cycle — that’s full HPG axis shutdown. Lipids shifted in the unfavorable direction. Liver enzymes elevated to about 2x baseline. None of these numbers were “dangerous” in isolation, but the trend is unmistakable: RAD-140 acts like a real anabolic, not like a magic supplement.

The Gains

On 10 mg/day for 8 weeks, with my training and nutrition dialed in, I added approximately 4-5 lbs of lean mass. Strength on the major lifts went up roughly 5-10% across bench, squat, and deadlift. Recovery between sessions improved noticeably — I could push intensity higher more frequently without joint or central nervous system fatigue.

By comparison, a clean cruise dose of testosterone enanthate — 200 mg/week — would deliver roughly 6-8 lbs of lean mass over the same period for me, with cleaner lipid behavior and far easier post-cycle recovery. RAD-140 isn’t quite as anabolic as testosterone, despite the marketing claims. The “ratio of anabolic to androgenic effect” makes for a slightly different feel — less aggression, less libido boost, no oil-skin acne in my case — but it’s not a free lunch.

PCT — Non-Negotiable

Anyone who tells you SARMs don’t require post-cycle therapy is either lying to you or has never had bloodwork done. RAD-140 at 10 mg/day for 8 weeks suppresses the HPG axis just as hard as a low-dose testosterone cycle. You need PCT.

The protocol I run after RAD-140 cycles:

• Enclomiphene: 12.5 mg daily for 4 weeks, starting day 1 post-cycle
• HCG: 500 IU twice weekly for 3 weeks, starting day 1 post-cycle (optional but accelerates Leydig cell recovery)
• Optional: Tongkat ali 400 mg/day and zinc 25 mg/day throughout PCT
• Bloodwork: Full hormonal panel at week 4 post-PCT to confirm recovery

Tamoxifen and clomid are the older-school PCT options. Both work. Enclomiphene is the cleanest of the SERMs — it gives you the LH/FSH stimulation of clomid without the mood and vision side effects associated with the zuclomiphene isomer in standard clomid.

If your bloodwork at week 4 post-PCT shows total testosterone still under 400 ng/dL, extend PCT another 4 weeks and re-test. Some guys recover slowly. Don’t start another cycle until you’ve recovered fully — repeated under-recovered cycles is how lifelong TRT dependency happens.

The Hidden Risks Nobody Talks About

The cardiovascular concerns are real. The HDL crash on RAD-140 is significant — mine dropped from 58 to 34 in 6 weeks. That’s a 40% reduction in protective cholesterol. Repeated cycles compound the cardiovascular risk. If you’re going to run SARMs long-term, you need to be tracking lipids quarterly and supporting cardiovascular health aggressively — citrus bergamot, fish oil, regular cardio, the works.

Liver toxicity is moderate but real. RAD-140 isn’t 17-alpha alkylated like the old oral steroids, but it does process through the liver and elevates ALT and AST consistently. TUDCA at 500 mg/day during the cycle is sensible insurance. Avoid alcohol entirely on cycle.

Mood effects vary. Some users report increased aggression, irritability, or anxiety. Others feel nothing. I noticed mild irritability around week 4-5 of cycles, manageable but real. If you’re already prone to anxiety or aggression, this isn’t the SARM for you.

Long-term reproductive consequences are the unknown unknown. We have decades of data on testosterone replacement therapy. We have months to a few years of self-experimentation data on SARMs. The animal carcinogenicity studies on RAD-140 raised flags significant enough that the original pharmaceutical development program was discontinued. That doesn’t mean it’ll cause cancer in humans — extrapolation from rodent studies is messy — but it’s not a non-data point.

Sourcing — The Catastrophe Zone

The SARM market is even more polluted than the peptide market. Independent third-party testing has repeatedly shown that products labeled “RAD-140” frequently contain testosterone esters, prohormones, completely unrelated compounds, or simply bunk powder. The FDA does not regulate this category. Caveat emptor doesn’t begin to cover it.

Buy only from vendors who publish HPLC and mass spectrometry results per batch. Pay the premium. The savings on a cheap unverified vendor will cost you when you find out you’ve been suppressing yourself with an unknown anabolic.

Should You Actually Run RAD-140?

Honest answer: probably not, if you’re under 30 with a healthy natural testosterone level and no specific physique goal. The risk profile is meaningful, the gains are modest compared to a real testosterone cycle, and your endogenous production is suppressed for months afterwards.

If you’re a serious lifter with multiple years of training, dialed nutrition, and you understand the bloodwork implications and PCT requirements, RAD-140 is a tool. Used cautiously, with full bloodwork monitoring, with proper PCT, with cardiovascular and liver support — it can deliver a meaningful body composition shift without the legal exposure of testosterone esters.

I run it less than I used to. As I’ve gotten older and the cardiovascular concerns matter more, I’ve shifted toward TRT-based protocols where the lipid behavior is cleaner and the input is pharmaceutical-grade. RAD-140 still has a place — for short-term physique pushes ahead of a specific event, for guys who legitimately can’t access TRT, for the occasional 8-week cycle as part of a broader rotation. But it’s not the magic supplement the marketing claims.

The Bottom Line

RAD-140 works. It also suppresses, shifts lipids, mildly stresses the liver, and requires real PCT. It’s not as anabolic as testosterone, but it’s anabolic enough to matter. The risk profile is real. The bloodwork is the only honest way to evaluate any SARM cycle. Skip the bloodwork and you’re flying blind through a category that has put plenty of guys on lifelong TRT.

If you choose to run it: 10 mg, 8 weeks, real PCT, full panel pre and post. Anything else is gambling with your endocrine system.

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