The Complete SARMs Guide: Every Compound Ranked by Risk and Reward

Selective androgen receptor modulators occupy a complicated position in the natty plus framework. They interact with androgen receptors and at higher doses they suppress natural testosterone production, which places them on the far edge of what the natty plus approach considers acceptable. But at microdoses, some SARMs may provide tissue-selective anabolic effects without meaningful suppression. After a decade of watching clients experiment with these compounds, here is the honest ranking of every major SARM by risk and reward.

Understanding Suppression: The Key Variable

The critical difference between SARMs and traditional anabolic steroids is selectivity. Steroids hit every androgen receptor in your body indiscriminately. SARMs were designed to preferentially target muscle and bone tissue while having reduced activity in the prostate, skin, and other tissues where androgenic stimulation causes side effects. The reality is more nuanced than the marketing suggests. All SARMs cause some degree of HPTA suppression at standard bodybuilding doses. The question is how much.

Tier 1: Mildest Suppression

Ostarine (MK-2866) is consistently the mildest SARM in terms of suppression. At 10 to 20mg daily, most users experience modest testosterone reduction of 10 to 30 percent that recovers within four to six weeks after discontinuation without PCT. At these doses, ostarine provides subtle but real improvements in lean mass retention during cutting and modest anabolic effects during maintenance.

From coaching experience, ostarine at 10mg is the SARM closest to being compatible with the natty plus philosophy of minimal suppression. It provides enough tissue-selective anabolic effect to justify use for specific goals like preserving muscle during an aggressive cut, while causing suppression mild enough that natural production bounces back quickly. It is not without risk, but the risk-to-reward calculation is more favorable than any other SARM.

Tier 2: Moderate Suppression

LGD-4033 (Ligandrol) is significantly more potent than ostarine and correspondingly more suppressive. At 5 to 10mg daily, users see meaningful muscle and strength gains, but testosterone suppression of 40 to 60 percent is typical. Recovery takes six to eight weeks and some users benefit from PCT with enclomiphene to accelerate HPTA restart.

Cardarine (GW501516) is technically not a SARM but is grouped with them commercially. It is a PPARdelta agonist that enhances endurance and fat oxidation without any androgenic activity or testosterone suppression. Its primary concern is the carcinogenicity signal seen in animal studies at high doses, though the human relevance of this finding is debated. I have written about my own 30-day cardarine experience and the results were real for endurance but the cancer concern is not something to dismiss casually.

Tier 3: Significant Suppression

RAD-140 (Testolone) is the most potent SARM available and arguably the closest to an actual anabolic steroid in terms of both effects and suppression. At 10 to 20mg daily, RAD-140 produces strength and muscle gains that impress even experienced lifters. But suppression is severe, often reaching 70 to 90 percent. Liver enzymes frequently elevate. Recovery requires proper PCT and can take two to three months.

RAD-140 effectively falls outside the natty plus framework at any meaningful dose. The suppression is too severe to maintain endogenous production, which violates the core principle. I include it in this guide because people will encounter it regardless, and understanding its risk profile is important for making informed decisions.

The Microdosing Approach

Some natty plus practitioners have experimented with SARM microdosing at one-quarter to one-half of standard bodybuilding doses. The theory is that at these lower doses, you get tissue-selective anabolic signaling without triggering meaningful HPTA suppression. The anecdotal results are mixed but intriguing, with some users reporting subtle body composition improvements while maintaining normal testosterone levels on bloodwork.

The data on SARM microdosing is extremely limited. We are extrapolating from the dose-response curves in clinical trials, and the assumption that suppression scales linearly with dose may not be accurate. This is an area where more data is needed before firm recommendations can be made. If you experiment with SARM microdosing, frequent bloodwork to verify that suppression is not occurring is essential.

SARMs and Liver Health

The liver toxicity concern with SARMs is real but often overstated for the milder compounds and understated for the more potent ones. Ostarine at standard doses shows minimal liver enzyme elevation in most users. RAD-140 frequently causes ALT and AST elevations that warrant monitoring. LGD-4033 falls in between.

Liver support during any SARM cycle is sensible regardless of which compound you choose. NAC at 600mg twice daily, TUDCA at 500mg daily for the more hepatotoxic compounds, and limiting alcohol consumption during the cycle are baseline precautions that every user should implement.

Interesting Perspectives

While the primary focus of SARMs is on muscle and bone, emerging research angles suggest potential applications beyond bodybuilding. Some researchers are investigating their role in treating muscle-wasting conditions like sarcopenia and cachexia, where the tissue selectivity offers a significant safety advantage over traditional steroids. There’s also a contrarian take in the biohacking community that views very low-dose SARMs not as performance enhancers, but as potential “androgen receptor sensitizers” to improve the efficacy of natural testosterone, though this is purely theoretical and requires rigorous study. The debate around compounds like Cardarine also highlights a cross-domain connection: the ethics of using substances with known animal-model risks for human performance, a dilemma that mirrors historical debates in pharmacology. Finally, the entire concept of receptor selectivity challenges the old bodybuilding dogma of “more is better,” illustrating a core principle of the Tony Huge Laws of Biochemistry Physics: targeted signaling often outperforms systemic bombardment.

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