title: “5 Underground Supplements Bodybuilders Swear By in 2023”

meta_description: “Discover the top 5 underground supplements bodybuilders are using in 2023. Tony Huge reveals insider secrets, dosages, and science-backed protocols.”

keywords: [“underground supplements”, “bodybuilding supplements 2023”, “performance enhancers”]

category: “supplements”

5 Underground Supplements Bodybuilders Swear By in 2023

Hey, it’s Tony Huge here, and if you’re chasing that next-level physique, you know the game isn’t just about lifting heavy and eating big. Sometimes, you’ve gotta dig deeper into the underground world of bodybuilding to find the real edge. Today, I’m pulling back the curtain on 5 underground supplements that bodybuilders are swearing by in 2023. These aren’t your typical whey protein or creatine stacks—these are the lesser-known, hard-hitting compounds that can transform your gains if you use them right. I’ve experimented with most of these myself, and I’m gonna break down the science, the protocols, and the real-world results so you can decide if they’re worth the hype.

Before we dive in, let me be clear: this isn’t for beginners. These supplements often fly under the radar for a reason—they’re potent, sometimes controversial, and require responsibility. Always do your research, consult with a professional if needed, and know your body. Let’s get into it.

Why Underground Supplements Matter in Bodybuilding

In my years of pushing the limits, I’ve learned that the mainstream supplement industry often plays it safe. They stick to the basics because they’re marketable and FDA-friendly. But bodybuilders like us? We’re not here for “safe.” We’re here for results. Underground supplements often come from cutting-edge research or anecdotal evidence in the iron game—stuff that hasn’t hit the shelves at GNC yet but is making waves in gyms and forums worldwide.

These compounds can enhance recovery, boost hormone levels, and even manipulate your body’s chemistry in ways that standard supps can’t. That said, they often come with risks or legal gray areas, so knowledge is power. Let’s break down the top 5 that are dominating conversations in 2023.

1. YK-11: The Myostatin Inhibitor Game-Changer

What It Is

YK-11 isn’t your average SARM (Selective Androgen Receptor Modulator). It’s often dubbed a “myostatin inhibitor,” which means it could theoretically block the protein that limits muscle growth. Imagine flipping a switch that lets your muscles grow beyond their natural cap—that’s the promise of YK-11.

Why Bodybuilders Love It

I’ve seen guys in the underground scene rave about YK-11 for its ability to pack on lean mass fast. Unlike traditional steroids, it’s selective in targeting muscle tissue, which means fewer side effects like hair loss or prostate issues (at least in theory). A 2013 study in Biological and Pharmaceutical Bulletin showed YK-11’s potential to increase follistatin levels, a protein that inhibits myostatin, leading to greater muscle growth potential.

How to Use It

In my experience, a common protocol is 5-10mg per day for 4-8 weeks. Split the dose—half in the morning, half pre-workout—to keep levels stable. Always pair it with a solid post-cycle therapy (PCT) because even SARMs can suppress natural testosterone. I’d recommend something like Enhanced Labs’ Blue Ox for PCT to help restore your hormonal balance naturally.

Risks and Considerations

YK-11 is still experimental. Long-term data is scarce, and some users report joint pain or mild liver strain. Bloodwork before and after a cycle is non-negotiable. If you’re new to this, start low and assess tolerance.

2. Cardarine (GW-501516): Endurance on Steroids

What It Is

Cardarine isn’t a SARM, though it’s often lumped in with them. It’s a PPAR-delta receptor agonist, which basically means it supercharges your body’s ability to burn fat and improve endurance by enhancing mitochondrial function.

Why Bodybuilders Love It

I’ve used Cardarine during cutting phases, and the stamina boost is unreal. You can grind out longer sessions without gassing out, and it helps shred fat while preserving muscle. A 2007 study in Cell Metabolism highlighted its role in increasing fatty acid oxidation, making it a go-to for anyone wanting to get lean without sacrificing strength.

How to Use It

A typical dose is 10-20mg per day, taken 30 minutes before cardio or training. Cycles usually run 8-12 weeks. Stack it with a clean diet and high-intensity interval training (HIIT) for maximum fat loss. I’ve found pairing it with Enhanced Labs’ Slay for pre-workout energy creates a killer combo.

Risks and Considerations

Cardarine got a bad rap due to early rodent studies showing potential cancer risks at insanely high doses. Human data is limited, but at bodybuilding doses, most users (myself included) report no major issues. Still, cycle responsibly and monitor your health markers.

3. MK-677 (Ibutamoren): The Oral Growth Hormone Secretagogue

What It Is

MK-677 is an oral compound that mimics ghrelin, the hunger hormone, to stimulate growth hormone (GH) and IGF-1 release. It’s not a peptide injection like traditional GH—it’s a pill, making it a favorite for those who hate needles.

Why Bodybuilders Love It

In my opinion, MK-677 is a game-changer for recovery and mass gains. It boosts appetite (great for bulking), improves sleep quality, and speeds up tissue repair. A 1998 study in The Journal of Clinical Endocrinology & Metabolism confirmed its ability to elevate GH levels significantly in healthy adults.

How to Use It

Most guys run 10-25mg per day, taken at night since it can cause drowsiness. Cycles can last 8-16 weeks or even longer since it doesn’t suppress testosterone. I’ve stacked it with YK-11 for insane growth phases—just be ready to eat like a beast.

Risks and Considerations

The hunger can be overwhelming, and some report water retention or lethargy. It’s not a quick fix; results build over weeks. Monitor blood sugar, as it can affect insulin sensitivity in some users.

4. SR-9009 (Stenabolic): The Metabolic Booster

What It Is

SR-9009, often called Stenabolic, is a Rev-ErbA agonist that influences your body’s circadian rhythm and metabolism. It’s not a SARM, but it’s popular in the underground for its fat-burning and endurance-boosting effects.

Why Bodybuilders Love It

I’ve experimented with SR-9009 during prep phases, and it’s like flipping a switch on your metabolism. You burn more calories at rest, and energy levels stay high even on low carbs. Research from Nature Medicine (2012) showed it increases mitochondrial activity in mice, mimicking the effects of exercise.

How to Use It

Dose at 20-30mg per day, split into 2-3 doses due to its short half-life (every 4-6 hours). Cycles run 8-12 weeks. It stacks well with Cardarine for a synergistic endurance and fat-loss effect.

Risks and Considerations

Oral bioavailability is low, so some prefer injectable forms. Long-term safety data is nonexistent, and overuse can disrupt sleep patterns. Start with a conservative dose and adjust based on how you feel.

5. Turkesterone: The Natural Anabolic Powerhouse

What It Is

Turkesterone is an ecdysteroid, a plant-based compound with anabolic properties similar to steroids but without the hormonal impact. It’s derived from the Ajuga turkestanica plant and has exploded in popularity lately.

Why Bodybuilders Love It

I’ve been impressed by Turkesterone’s ability to boost strength and recovery without messing with testosterone levels. It’s a legal, natural option for guys wary of SARMs or AAS. A 2006 study in Phytochemistry suggested ecdysteroids like Turkesterone can enhance protein synthesis, though human trials are limited.

How to Use It

Doses range from 500-1000mg per day, split into two servings (morning and pre-workout). Cycle for 8-12 weeks, though some run it continuously since it’s non-suppressive. Enhanced Labs offers a high-quality Turkesterone product I’ve used myself—pure and effective.

Risks and Considerations

Results vary widely—some swear by it, others feel nothing. Quality matters; many products are underdosed or fake. Stick to reputable sources and don’t expect steroid-like gains.

The Bigger Picture: Stacking and Safety

If you’re thinking of diving into these underground supplements, strategy is everything. Stacking compounds like Cardarine and SR-9009 for cutting, or MK-677 and YK-11 for bulking, can amplify results—but it also amplifies risks. Always start with one compound to gauge your response before combining. Bloodwork, diet, and training must be dialed in; these aren’t magic pills.

In my experience, the underground scene is a double-edged sword. The potential for gains is massive, but so is the potential for mistakes. Educate yourself, track your progress, and don’t chase shortcuts at the expense of health.

Actionable Takeaways for 2023

• Start Small: Test one supplement at a time with conservative doses (e.g., 5mg YK-11 or 10mg Cardarine) to assess tolerance.
• Cycle Smart: Limit cycles to 8-12 weeks for most compounds, followed by a break or PCT if needed. Use Enhanced Labs’ Blue Ox for hormonal recovery.
• Prioritize Bloodwork: Get baseline tests for liver, kidney, and hormone levels before and after cycles. Knowledge is your best defense.
• Source Wisely: Underground means unregulated—buy from trusted vendors to avoid fakes or contaminants.
• Stack with Basics: Don’t ditch fundamentals like protein, creatine, or a solid pre-workout like Enhanced Labs’ Slay. These underground supps are the icing, not the cake.

If you’re serious about pushing boundaries, these 5 underground supplements could be your ticket to breaking plateaus in 2023. I’ve seen them work wonders in my own experiments and among elite bodybuilders I coach. But remember: with great power comes great responsibility. Stay informed, stay safe, and keep grinding.

Related Topics to Explore

For more on cutting-edge bodybuilding strategies, check out these internal links:

• SARMs vs. Steroids: What’s the Difference?
• Ultimate Guide to Post-Cycle Therapy
• Top Fat-Burning Stacks for 2023

FAQ: Underground Supplements for Bodybuilding

Are underground supplements legal?

It depends on the compound and your country. Some, like Turkesterone, are legal and natural, while others like YK-11 or Cardarine exist in a gray area or are banned in sports. Always check local laws and WADA rules if you compete.

Do these supplements require a prescription?

Most underground supplements aren’t FDA-approved or prescribed by doctors. They’re often sold as “research chemicals” online. Proceed with caution and prioritize safety.

Can beginners use these underground supplements?

I don’t recommend these for beginners. Master the basics—diet, training, and standard supps—before exploring underground options. Experience and knowledge are critical to using them safely.

What’s the best underground supplement for muscle growth?

In my experience, YK-11 and MK-677 are top contenders for mass gains due to their impact on muscle protein synthesis and growth hormone levels. Pair with a calorie surplus and heavy lifting for best results.

Tony Huge is the Founder of the Enhanced Movement — a global coalition for human optimization and medical freedom, founded in 2015. Learn more at tonyhuge.is.