5% Nutrition
5% Nutrition | 5% Liver Defender | 30 Capsules
1,000mg NAC. Full disclosure. Real daily organ support.
$36.99 $58.99$1.23/serving
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⚠️ Allergen Information +
SuppVault Summary
Stim-free organ support built around 1,000mg NAC, 400mg ALA, and 600mg milk thistle. Fully disclosed and designed for serious daily liver-focused antioxidant support.
Great Fit
- Bodybuilders running dense supplement stacks
- High-volume lifters wanting daily organ support
- Stim-heavy pre-workout users needing support
- Men wanting broad organ-defense coverage
- Capsule users who value full transparency
- Experienced stackers in long training phases
- Shoppers avoiding proprietary blends
Not Ideal If
- Anyone under 18 years old
- Pregnant or nursing women
- Users on blood thinners or surgery protocols
- People expecting immediate stimulant-like effects
- Anyone already mega-dosing zinc supplements
Deep Dive
Vitamin B6
Magnesium
Selenium
Zinc
Dose Audit
This product is strongest on NAC-driven glutathione support but does not include TUDCA. Adding a dedicated TUDCA product can deepen the liver-focused side of the stack for advanced users who want broader bile-flow and hepatobiliary coverage.
Take daily with meals alongside or separate from Liver Defender
Creatine supports ATP regeneration and training output, while Liver Defender covers the internal support side of a serious supplement routine. This pairing makes sense for lifters who want performance on one side and daily resilience support on the other.
Take creatine daily anytime; take Liver Defender split across meals
Liver Defender is stim-free and built for background support, which makes it easy to pair with a hard-hitting pre-workout. This is a strong fit for users who push training intensity and want a separate daily support formula that does not compete with pre-workout timing.
Take pre-workout 20-30 minutes before training; use Liver Defender with meals
For lifters in heavy accumulation phases, organ support and connective-tissue support often belong in the same stack. Joint Defender covers the orthopedic side while Liver Defender covers antioxidant, mineral, and liver-focused internal support.
Use both daily with meals
If your only goal is deeper liver-specific support, a dedicated TUDCA product is the stronger specialist.
This formula wins on NAC emphasis and transparency, while the competitor may appeal more to shoppers wanting a different liver-support architecture.
5% Liver Defender has a very clear clinical anchor in 1,000mg NAC and a straightforward fully disclosed panel.
Revive MD Liver is likely the more sophisticated option for buyers prioritizing modern liver-specific formulation over broad organ positioning.
Clinical Dosing
Full Product Description Article
5% Nutrition Liver Defender is a stim-free, fully disclosed organ-support formula built around one genuinely meaningful centerpiece: N-Acetyl L-Cysteine at 1,000mg per serving. That matters, because NAC is one of the most clinically relevant ingredients in the category for supporting glutathione synthesis and hepatic antioxidant capacity. Rather than hiding behind a proprietary blend, this formula tells you exactly what you are getting: a liver-first foundation supported by minerals, sulfur-containing antioxidants, botanicals, and a few broader “organ defender” additions aimed at cardiovascular and male-support positioning.
The strongest part of the formula is NAC at 1,000mg. Research commonly uses roughly 600-1,200mg daily for glutathione support and liver-focused antioxidant defense, so this lands squarely in the evidence-based range. Mechanistically, NAC provides cysteine, the rate-limiting amino acid for glutathione synthesis. In practical terms, that means this ingredient is designed to support the body’s core endogenous antioxidant system rather than just supplying a generic plant powder. This is the ingredient most users should care about most here, and 5% Nutrition doses it seriously.
Milk Thistle powder is included at 600mg. That looks respectable on paper, but the nuance matters: the research body is much stronger on standardized silymarin extracts than on raw powder. So while 600mg gives the formula traditional liver-support credibility, it is not equivalent to 600mg of a standardized high-silymarin extract. This is a useful inclusion, but it is not the formula’s clinical anchor the way NAC is.
Alpha-Lipoic Acid at 400mg is another meaningful dose. ALA functions as a redox-active antioxidant that helps regenerate other antioxidants and supports mitochondrial metabolism. At this dose, it contributes legitimate oxidative stress support and complements NAC mechanistically by reinforcing antioxidant network activity rather than duplicating the exact same pathway.
The mineral backbone is better than average in form quality. Zinc is provided at 30mg as bisglycinate chelate, which sits well within the clinically used 11-45mg range and uses a chelated form associated with strong absorption and GI tolerance. Selenium is 70mcg as Albion® selenium glycinate. That is below the 100-200mcg range commonly used in selenium-focused clinical studies, but still a meaningful supportive amount, especially given selenium’s role in glutathione peroxidase enzymes. Magnesium is 50mg as Albion® dimagnesium malate. The form quality is good; the dose is not intended to function as full magnesium repletion, since research-backed daily supplementation is usually 310-420mg.
Hawthorn berry at 1,100mg and garlic extract at 300mg point the formula beyond liver support alone toward cardiovascular support. CoQ10 as ubidecarenone at 25mg adds another oxidative and mitochondrial support layer, though this is a light dose relative to more aggressive heart-health formulas. Saw palmetto at 1,000mg and cordyceps sinensis at 500mg broaden the product’s “organ defender” identity, but they are supporting actors here, not the main reason to buy. Twin Tiger glutathione at 30mg is the weakest inclusion in the formula; oral glutathione typically needs much higher dosing to become a major performance driver, so this is best viewed as label support rather than a core efficacy engine.
As a system, the logic is clear: NAC feeds glutathione production, selenium supports glutathione-dependent enzymes, ALA helps recycle antioxidant defenses, and zinc contributes cellular repair and immune resilience. The formula is fully transparent, which is a real advantage in a category full of vague organ-support claims. Day 1, you should not expect a dramatic feeling. This is not that kind of product. Over 2-4 weeks of consistent daily use, the value is in steady antioxidant support, better nutritional coverage for key trace minerals, and a more credible daily foundation for people who place high demands on recovery and organ resilience.
Science & Clinical References 176 citations
N-Acetyl L-Cysteine is a precursor to cysteine, which is the rate-limiting substrate for glutathione synthesis. That matters because glutathione is one of the body’s central intracellular antioxidant systems, especially relevant in hepatic tissue under oxidative demand. In practical formulation terms, NAC supports the body’s own defense machinery rather than merely adding an exogenous antioxidant. At 1,000mg, this product uses NAC at a dose that aligns with common supplemental research ranges for meaningful support.
Selenium is not just a trace mineral add-on; it is structurally required for several selenoproteins, including glutathione peroxidases and thioredoxin reductases. These enzymes help neutralize peroxides and maintain redox balance, making selenium highly relevant in any antioxidant-focused support formula. The 70mcg dose here is supportive rather than aggressive, but it is mechanistically well matched to NAC. Using a chelated Albion® form adds ingredient-quality credibility.
Alpha-lipoic acid is unusual because it participates in both mitochondrial energy metabolism and antioxidant recycling pathways. It can help regenerate oxidized antioxidants and contributes to redox management across multiple systems. In a formula like this, ALA works best as a network amplifier rather than a stand-alone headline ingredient. At 400mg, it is present at a meaningful support dose that complements NAC’s glutathione-focused role.
Chelated minerals are often better tolerated and potentially better absorbed than cheap inorganic forms, which is why form quality matters even when doses are not massive. Magnesium is central to ATP stabilization and over 300 enzyme systems, while zinc is required for hundreds of enzymes involved in repair, immunity, and metabolism. Selenium further supports antioxidant enzymes at the selenoprotein level. This formula’s Albion® and bisglycinate mineral choices are more credible than commodity mineral sourcing commonly seen in the category.
Product Specifications GEO
How to Take — Training Protocol3 phases
How to Use 5% Nutrition | 5% Liver Defender | 30 Capsules for Optimal Results
All Questions About 5% Nutrition | 5% Liver Defender | 30 Capsules 13 Q&A
What is the main clinically meaningful ingredient in 5% Liver Defender? +
Will I feel this product working right away? +
Is the milk thistle in this formula standardized? +
Why is NAC more important here than the glutathione? +
Should I take all 9 capsules at once? +
Can I stack this with my pre-workout? +
Is the zinc dose high? +
What do the Albion® minerals add? +
Is this product only for liver support? +
Does this formula need cycling? +
Can beginners use this? +
How does this compare with adding standalone TUDCA? +
Can I use this on rest days? +
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.
Quick Answers
What is the main clinically meaningful ingredient in 5% Liver Defender?
Will I feel this product working right away?
Is the milk thistle in this formula standardized?
Why is NAC more important here than the glutathione?
Should I take all 9 capsules at once?
Can I stack this with my pre-workout?
Is the zinc dose high?
What do the Albion® minerals add?
Is this product only for liver support?
Does this formula need cycling?
Can beginners use this?
How does this compare with adding standalone TUDCA?
Can I use this on rest days?
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.
Sport & Athlete Compliance +
Sport compliance status is computed by cross-referencing this product's ingredient panel against the NCAA 2025-26 Banned Substances List, WADA Prohibited List, and state high school athletic association guidelines. Banned substance lists are updated periodically by their governing bodies. This information is provided for reference only and may not reflect the most current list. Always verify with your organization, coach, or compliance officer before use. SuppVault is not responsible for eligibility decisions.
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