Premium Testosterone Support
With Clinically Studied TestoSurge to Elevate Total & Free Testosterone
Clean Ingredients. No Proprietary Blends. Transparent Label.
TestoSurge: 500 mg
Ashwagandha Root (5% Withanolades, HPLC Verified): 250 mg
Magnesium Glycinate: 150 mg
Shilajit (50% Fulivic Acid, HPLC Verified): 100 mg
Vitamin B6: 20 mg
Zinc Gluconate: 15 mg
Boron: 5 mg
Black Pepper Extract (95% Piperine): 5 mg
Vitamin D3: 1000 IU
Orders go out within 1 business day
As with all 4 Gauge products, if you don't absolutely LOVE it, you can return it for a FULL REFUND.
4 Gauge isn't just a business. It's a passion. We're a small, purpose driven company and we make products that we are excited to use ourselves.
We back up every product we sell with our Ironclad Money Back Guarantee.
Clean Ingredients. No Proprietary Blends. Transparent Label.
TestoSurge: 500 mg
Ashwagandha Root (5% Withanolades, HPLC Verified): 250 mg
Magnesium Glycinate: 150 mg
Shilajit (50% Fulivic Acid, HPLC Verified): 100 mg
Vitamin B6: 20 mg
Zinc Gluconate: 15 mg
Boron: 5 mg
Black Pepper Extract (95% Piperine): 5 mg
Vitamin D3: 1000 IU
Orders go out within 1 business day
As with all 4 Gauge products, if you don't absolutely LOVE it, you can return it for a FULL REFUND.
4 Gauge isn't just a business. It's a passion. We're a small, purpose driven company and we make products that we are excited to use ourselves.
We back up every product we sell with our Ironclad Money Back Guarantee.
Premium Testosterone Support
Formulated to fuel your drive, vitality, and edge.
You’re not losing your strength — you're leaking it.
Between stress, age, and environmental toxins, even the strongest men can feel their energy fade, libido dip, and mental edge go soft. Premium Testosterone Support is here to change that — naturally.
Crafted with a clinical dose of TestoSurge® (500 mg) and enhanced with adaptogens, minerals, and bioactives, this daily formula is built to support your body’s natural testosterone production, amplify vitality, and help you feel like yourself again.
💥 What You’ll Feel
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Renewed Energy & Drive – With zinc, B6, magnesium, and shilajit supporting mitochondrial and hormonal health
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Healthy Testosterone Support – Backed by clinical research on TestoSurge®
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Enhanced Libido & Mood – With ashwagandha root extract and boron for cortisol balance
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Improved Nutrient Absorption – Thanks to 95% piperine for optimized bioavailability
🔬 Clinically Backed. Formulator Approved.
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✅ 500 mg TestoSurge® – shown to increase total and free testosterone
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✅ 250 mg Root-only Ashwagandha (5% withanolides)
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✅ 100 mg HPLC-tested Shilajit (50% Fulvic Acid)
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✅ GMP Certified & Manufactured in the USA
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✅ No proprietary blends. No fluff. Just results.
🔒 100% Satisfaction Guarantee
Try it risk-free. If you don’t feel the difference, we’ll refund every penny.
Nothing Else Comes Close.
You know what they say...the proof's in the pudding. Try any other Testosterone Support product - literally any other one. Then, try 4 Gauge Premium Testosterone Support. Nothing compares.
We cover every angle of testosterone maximization and it's a difference you'll feel.
TESTOSURGE - The Team Captain
TESTOSURGE isn't the owner player on our team, but it's definitely the Team Captain. This clinically tested ingredient is amazing and gets FAST and POWERFUL results. Here are some of the results of their clinical trials.
Total Testosterone
This is the first thing you think of when you think of increasing your T-Levels.
Free Testosterone
Free testosterone is much more important than you may think and is a better indicator of how you'll feel.
Increase after 10 hours
TESTOSURGE has been shown to increase T-Levels within a short time.
TESTOSURGE
TESTOSURGE is the cream of the crop for testosterone support. Clinical studies have shown that 500 mg of daily TESTOSURGE supplementation signicantly impacted
Body Fat Percentage, Total Testosterone and Bioavailable Testosterone.
The best part is, the effects are noticeable within 10 hours of your first dose.
What is TESTOSURGE? It's a potent and highly concentrated extract from fenugreek. Learn more about TESTOSURGE above.
Ashwagandha Root
Ashwagandha is one of the most studied adaptogens in the world — and for good reason. Our formula uses root-only extract, standardized to 5% withanolides, to help your body better manage stress, regulate cortisol, and create the hormonal conditions needed for healthy testosterone production.
You may not know this but 5% withanolides, root-only ashwagandha is the premium variety and impacts testosterone much better than "regular" ashwagandha. If the company doesn't tell you it's 5% and root-only, it's because it's not. They wouldn't pay that much extra for the ingredient and then not brag about it.
Shilajit (50% Fulvic Acid)
Shilajit is one of the most potent natural substances in traditional Ayurvedic medicine — and for good reason. Sourced from high-altitude mineral-rich rock beds and purified using cutting-edge HPLC testing, our shilajit delivers 50% fulvic acid for maximum bioactivity.
With deep roots in vitality and male health, shilajit supports:
- Healthy testosterone production
- Enhanced energy and recovery
- Improved nutrient absorption and mitochondrial function
We use only standardized, lab-verified shilajit extract, free from fillers or contamination. It’s black, sticky, powerful — and exactly what your body needs to perform at its peak.
Heads up, most shilajit on the market is HIGHLY diluted and has a fulvic acid content under 5%. 50% HPLC is the best you can buy. Below 40% doesn't help testosterone. Again, if they were using this kind, they'd brag about it.
Zinc Gluconate
Zinc is essential for testosterone synthesis, immune function, and metabolic performance — and it’s one of the most common nutrient deficiencies in men.
We use Zinc Gluconate, a bioavailable form known for superior absorption and efficacy. Each serving delivers 136% of your Daily Value, helping to:
- Support testosterone production
- Enhance sperm quality and fertility
- Strengthen immune defenses
- Promote recovery and inflammation balance
Your body can't store zinc, so daily intake is key — and we’ve got you covered.
Vitamin D3
Vitamin D3 is a powerful hormone precursor that supports testosterone levels, mood, immunity, and metabolic function. And most men aren’t getting nearly enough.
We deliver 1,000 IU of highly bioavailable D3 in every serving to help:
- Support testosterone production
- Enhance immune response and recovery
- Improve mood and cognitive health
- Boost energy levels naturally
A small dose with a big impact — especially when paired with key cofactors like magnesium, zinc, and boron.
Boron Glycinate
Boron may not get as much attention as zinc or magnesium, but it plays a powerful role in male hormonal health. It’s been shown to help increase free testosterone, reduce estrogen levels, and support bone strength and joint health — all without overstimulating the endocrine system.
Our formula uses boron glycinate, a highly bioavailable form that works synergistically with vitamin D, magnesium, and zinc to help optimize your T levels and overall vitality — one capsule at a time.
Magnesium Glycinate
Magnesium plays a vital role in over 300 enzymatic reactions in the body — but its impact on testosterone is especially powerful. Studies show magnesium supports free testosterone levels, deep sleep, muscle function, and stress resilience.
Our formula includes 150 mg of magnesium glycinate, one of the most bioavailable and gut-friendly forms available.
This isn’t just about relaxation — it’s about creating the internal environment where your body thrives. Better recovery. Better sleep. Better testosterone.
Vitamin B6
Vitamin B6 (Pyridoxine HCL) is a metabolic multitasker. It supports the conversion of food into fuel, regulates mood, and plays a critical role in testosterone production.
We’ve included a potent 20 mg dose (1176% DV) to help:
- Support natural testosterone synthesis
- Promote neurotransmitter balance and focus
- Aid protein metabolism and energy production
- Enhance immune response
It’s a small vitamin with massive reach — and we’ve dosed it where it counts.
Black Pepper (95% Piperine)
Even the most powerful ingredients won’t do much if your body can’t absorb them. That’s where black pepper extract (BioPerine®) comes in.
We’ve included a clinical dose of 95% piperine extract to help:
- Enhance absorption of vitamins, minerals, and herbal extracts
- Increase the bioavailability of key testosterone-boosting compounds
- Support digestion and metabolic efficiency
This tiny addition makes a massive impact — helping your body unlock the full potential of everything in this formula.
Premium Testosterone Support
A word from the BusyFitGuy
Frequently asked questions
Yes! Our Premium Testosterone Support is intended as a daily supplement. Taking 2 capsules per day is how you'll get the best results.
No. Rather that adding testosterone to your system, this is formulated to stimulate your body to produce more...so, if anything, this would have the opposite effect on your testicles.
Yes! This is designed to supercharge your TRT program
No. 4 Gauge Premium Testosterone Support is made from natural ingredients and will not cause you to fail a drug test.
Yes! While this is designed for men, women also produce testosterone and can use support. Women can take 1 capsule per day to support healthy T-levels.
If you don't absolutely LOVE this, we're going to give you a full refund. We give refunds within 30 days of purchase. If you're outside of that window, we'll probably still refund you as long as you're not an asshole and we don't think you're trying to scam us.
Our customers tell it better than we do!
based on 118 reviews
Results are measurable within 10 hours of your first dose, although most customers notice improved energy, mood, and performance within 2–3 weeks of consistent use, with optimal benefits after 6-8 weeks. Our formula uses research-backed ingredients to naturally support your body’s own testosterone production — no hormones, no harsh chemicals.