Home / Ingredient Directory / Laxogenin

Reviewed by Yannis Lopez · Nutrition Industry Veteran

Last updated: September 14, 2026

Muscle & Performance Synthetic Compound

Laxogenin

Q: Is laxogenin legal and natural?

It's legal -- not a controlled substance. But 'natural' is misleading: analytical testing has found that 5a-hydroxy-laxogenin, as sold in supplements, is synthetically produced rather than extracted from plants in meaningful quantities, despite being marketed as a plant-based compound.

Marketed as a "legal steroid" plant compound -- the only real animal study found no anabolic effect at all

Zero human studies

Not actually naturally occurring

Important: These statements have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before starting any supplement.

Overview

5a-hydroxy-laxogenin is a spirostane-type steroid sold in pre-workout and "natural anabolic" supplements, usually marketed as a plant-derived compound extracted from sources like Smilax sieboldii. It's a genuinely popular ingredient in the "legal steroid alternative" category -- and it comes with the weakest evidence of any ingredient in that category.

Here's the surprising, verified part: analytical chemistry research has found that 5a-hydroxy-laxogenin, as it actually appears in dietary supplements, is not naturally occurring in any meaningful amount. It's produced synthetically. The "plant-based" framing on the label doesn't match what's actually in the bottle.

What the Evidence Actually Shows

Zero Human Trials

No published human research exists testing laxogenin or 5a-hydroxy-laxogenin for muscle building, strength, or any performance outcome.

The One Real Animal Study Found Nothing

A study in castrated (orchiectomized) male rats -- designed specifically to detect anabolic and androgenic effects -- found no increase in muscle or androgen-target tissue weight at any dose tested. The highest dose caused more tissue atrophy in some targets, not less.

Lab-Dish Signals Only

In isolated human prostate cell assays, laxogenin can activate the androgen receptor at higher concentrations and block it at lower ones -- a mixed, "biphasic" lab response of unclear real-world relevance.

Myostatin Inhibition in Cell Culture

Separate cell-culture work found laxogenin reduced myostatin (a muscle-growth-limiting protein) and supported muscle cell formation in a dish -- an interesting mechanistic signal, but not the same as a living muscle responding to it.

Typical Dosage

No Clinical Dose Exists

50-100mg

The range commercial products commonly use, set without any supporting human efficacy data

Label Claim to Watch

"Plant-derived" / "Natural"

Analytical testing has found the compound in supplements is synthetically produced, not extracted from plants

Pro Tips

The only animal study built specifically to test anabolic/androgenic effects found none -- that's a meaningful negative result, not just "no data yet"
If a stack claims strength gains from laxogenin, credit is more likely due to the other ingredients or training itself
Don't pay a premium expecting steroid-like effects -- the evidence doesn't support that framing
Ecdysterone is the better-evidenced option if you want something in this general "plant steroid" category

Research Snapshot

A 2025 study tested 5a-hydroxy-laxogenin in an orchiectomized (castrated) rat model -- the standard method for detecting real anabolic or androgenic activity, since it removes the body's own testosterone as a confounding variable. Across the doses tested, the researchers found no change in the wet weight of muscle or androgen-target tissues, and significantly more atrophy in some target tissues at the highest dose. This followed earlier 2022 work from the same research group showing laxogenin could activate the androgen receptor in isolated human prostate cells -- a lab finding that did not translate into a muscle-building effect in a living animal.

Source: Derwand et al., Drug Testing and Analysis (2025)

How Laxogenin Compares

Ingredient	Human Evidence	Key Difference
Laxogenin	Zero human studies	The one animal study designed to test it found no anabolic effect
Ecdysterone	One positive RCT	The only one of this category with real human trial data
Turkesterone	No dedicated human RCTs	Marketed on data that actually belongs to a different compound
Creatine	500+ studies	The actual gold standard for evidence-based muscle and strength support

These are the most common comparisons our customers ask about in-store.

If You're Building a Training Stack

Better-Evidenced Swap

Ecdysterone + Creatine + Whey Protein

Same marketing category, actual human trial data behind it

Proven Foundation

Creatine + Whey Protein + EAA

Skip the unproven compound and build on decades of solid evidence instead

What to Ask Before Buying

"What human study supports this ingredient?"

For laxogenin specifically, the honest answer right now is: none

Frequently Asked Questions

Is laxogenin legal and natural?

It's legal -- not a controlled substance. But "natural" is misleading: analytical testing has found that 5a-hydroxy-laxogenin, as sold in supplements, is synthetically produced rather than extracted from plants in meaningful quantities, despite being marketed as a plant-based compound.

Does laxogenin actually build muscle like a steroid?

The only animal study specifically designed to test this -- in castrated male rats -- found no increase in muscle or androgen-target tissue weight at any dose. Some tissues actually showed more atrophy at the highest dose tested.

Are there any human studies on laxogenin?

No. As of now, there are no published human trials testing laxogenin or 5a-hydroxy-laxogenin for muscle building, strength, or any other outcome.

Sources & References

1. Beer, C., & Keiler, A.M. (2022). Androgenic properties of the dietary supplement 5a-hydroxy-laxogenin. Archives of Toxicology, 96(7), 2071-2081.

2. Derwand, D., Zierau, O., Wolf, C.A., Wolber, G., & Keiler, A.M. (2025). Effects of the Dietary Supplement 5a-Hydroxy-Laxogenin in the Orchiectomized Rat Model. Drug Testing and Analysis, 17(9).

3. Cohen, P.A., Sharfstein, J., Kamugisha, A., & Vanhee, C. (2020). Analysis of Ingredients of Supplements in the National Institutes of Health Supplement Database Marketed as Containing a Novel Alternative to Anabolic Steroids. JAMA Network Open, 3(4), e202818.

All references are peer-reviewed studies or position stands from reputable organizations.