TUDCA vs NAC: Which Is Better for Liver Support?
If you're researching liver support supplements, two names dominate the conversation: TUDCA and NAC. Both have strong scientific backing — but they work very differently. Here's the no-nonsense breakdown.
What is TUDCA?
TUDCA (tauroursodeoxycholic acid) is a bile acid that helps protect liver cells, improves bile flow and supports overall liver function. It's particularly popular among athletes using harsh supplement protocols.
What is NAC?
N-Acetyl Cysteine (NAC) is a precursor to glutathione — the body's master antioxidant. It supports detoxification, respiratory health and overall cellular protection.
Key differences
TUDCA works mostly at the bile-acid level, helping liver cells stay healthy. NAC boosts glutathione production for systemic antioxidant support. They're complementary, not competing.
Dosage & timing
Typical TUDCA dose: 250–500mg per day, taken with meals. NAC: 600–1200mg per day, often split between morning and evening. Both can be taken long-term.
Stacking TUDCA and NAC
Many athletes stack both for comprehensive liver and antioxidant support. Start with one for 4 weeks before adding the other to gauge tolerance.
Verdict
Choose TUDCA if your priority is direct liver-cell protection. Choose NAC for systemic antioxidant and detox support. For serious supplement users, both together cover all bases.
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