I Took 600 mg NAC + 200 mcg Selenium Every Day for 90 Days and My Lungs, Liver, and Mood Feel Brand New

Most compelling alternative title:
“The $0.40/Day “Detox Duo” That Cleared My Smoker’s Cough, Reversed My Fatty Liver Markers, and Killed My Anxiety in 30 Days Flat”

I used to wake up with a phlegmy cough that sounded like a 60-year-old smoker (I quit 8 years ago). My liver enzymes were creeping up every blood test, my brain felt like it was wrapped in cotton by 3 p.m., and I’d get random panic attacks that came out of nowhere. Doctors offered SSRIs and statins. I wanted a different way.

Then in February 2025 I started the single cheapest, most researched stack I’ve ever tried: 600 mg N-Acetylcysteine (NAC) + 200 mcg selenium (as selenomethionine) every morning with breakfast.

Ninety days later my cough is gone, my ALT/AST dropped from the 50s into the teens, my mood is the calmest it’s been in a decade, and my doctor actually asked me what new medication I was on (I told him “two over-the-counter supplements” and watched his jaw drop).

Here’s exactly what happened when I finally gave my body the two nutrients it uses to make glutathione — its master antioxidant and detox molecule.

Why NAC + Selenium Is the Ultimate “Phase II Detox” Power Couple

NAC provides cysteine — the rate-limiting amino acid for glutathione synthesis. Selenium is the critical cofactor for glutathione peroxidase — the enzyme that actually uses glutathione to neutralize free radicals.

Together they:

• Boost glutathione levels 30–100% in weeks
• Protect and regenerate liver cells
• Thin mucus and clear airways
• Reduce oxidative stress in the brain (anxiety/depression relief)
• Enhance natural killer cell and T-cell function

My 90-Day NAC + Selenium Transformation

1. Week 1: Morning cough started loosening. Less phlegm.
2. Week 2: Random anxiety attacks stopped cold.
3. Week 4: Energy noticeably higher and more stable.
4. Week 6: First bloodwork — ALT 48 → 28, AST 52 → 31.
5. Week 8: Cough completely gone. Breathing feels deeper.
6. Day 90: ALT 18, AST 19. Mood calmest in years. Zero sick days.

Exact Protocol I Use Every Morning

• 600 mg NAC (pure, no fillers)
• 200 mcg selenium (selenomethionine or yeast form)
• With food (reduces any stomach upset)
• Best brands 2025:
  • Thorne or Jarrow NAC
  • Thorne Selenomethionine or Pure Encapsulations

The Science Is Hospital-Grade

• NAC is FDA-approved for acetaminophen overdose and used IV in hospitals for liver failure.
• Multiple RCTs show 600–1,800 mg NAC reduces symptoms of COPD, bronchitis, and flu duration.
• Selenium + NAC combo increases glutathione peroxidase activity by 100–300% in weeks.
• Used in psychiatric clinics for OCD, depression, and addiction (reduces glutamate excitotoxicity).

Bonus Benefits People Are Seeing in 2025

• Faster hangover recovery
• Clearer thinking and reduced brain fog
• Stronger hair and nails
• Better response to vaccines
• Reduced allergy symptoms

Final Verdict: My Non-Negotiable Morning Duo

600 mg NAC + 200 mcg selenium costs about 40 cents a day and has given me better liver function, lung health, and mood stability than any prescription or $200 supplement ever did.

If you deal with respiratory issues, brain fog, high liver enzymes, or just want the most powerful detox combo on earth — start this stack tomorrow morning.

In 30 days you’ll feel cleaner. In 90 days you’ll feel reborn.

References

• Atkuri KR, et al. “N-Acetylcysteine and glutathione.” Current Opinion in Pharmacology, 2007.
• Medved I, et al. “N-acetylcysteine enhances muscle cysteine and glutathione.” Journal of Applied Physiology, 2004.
• Rayman MP. “Selenium and human health.” The Lancet, 2012.
• Berk M, et al. “NAC in psychiatric disorders.” Biological Psychiatry, 2013.