Sarah Mitchell, BSc Nutritional Science
Liver Health Reviews · Updated May 12, 2026 · 11 min read
I have spent the last three months testing six of the most popular hangover supplements on the market — from the TikTok-viral ZBiotics probiotic shot to the Amazon bestseller Flyby, and the well-funded Cheers Restore. I took each one as directed, tracked my symptoms, and cross-referenced every formula against the published clinical literature.
The honest conclusion? Most of them only address one or two of the four biological mechanisms behind a hangover. And the one that addresses all four is not the most famous brand — it is a formula called Cloud9 Daily Restore that most people in the hangover supplement space have not heard of yet.
Why Most Hangover Supplements Fail
A hangover is not a single problem — it is four separate biological processes happening simultaneously. Most supplements treat it like a single problem, which is why most supplements only partially work.
Acetaldehyde Buildup
When your liver metabolises alcohol, it produces acetaldehyde — a toxic compound 30x more harmful than alcohol itself. This is the primary driver of nausea, headache, and brain fog. DHM (dihydromyricetin) accelerates its breakdown.
Glutathione Depletion
Alcohol metabolism rapidly depletes glutathione, your liver's master antioxidant. Without it, oxidative damage accumulates. NAC (N-Acetyl Cysteine) is the direct precursor to glutathione and replenishes it within hours.
Liver Cell Inflammation
Acetaldehyde and oxidative stress trigger inflammation in liver cells. Milk Thistle (silymarin) has 40+ years of clinical research showing it protects liver cells and reduces inflammation markers.
Dehydration & Nutrient Loss
Alcohol is a diuretic. It flushes electrolytes and B-vitamins — particularly B1 (thiamine), B6, and B12 — which are essential for energy metabolism and neurological function.
The 4 Ingredients That Actually Work
After reviewing the clinical literature, our team identified four ingredients with the strongest evidence base for alcohol-related liver and hangover support. A supplement that contains all four — at clinical doses — will outperform any formula that only contains one or two.
Cloud9 Daily Restore is the only supplement tested that contains all four clinically-backed ingredients.
Our Rankings: 6 Hangover Supplements Tested
Scored across 5 criteria: ingredient completeness, clinical doses, formula transparency, value for money, and real-world effectiveness.
#1 Cloud9 Daily Restore
The only formula with all 4 clinically-backed ingredients
Pros
- ✓DHM 300mg — highest dose tested
- ✓NAC 600mg — unique to Cloud9 in this category
- ✓Milk Thistle 250mg (80% silymarin)
- ✓Full electrolyte + B-vitamin complex
- ✓Liver-specific formula, not just hangover relief
- ✓30-day money-back guarantee
Cons
- ✗Only available online — not in stores
#2 Cheers Restore
Popular DHM supplement, but missing key liver ingredients
Pros
- ✓Contains DHM (dihydromyricetin)
- ✓L-Cysteine included
- ✓Well-known brand with large community
- ✓Available on Amazon
Cons
- ✗No NAC — misses glutathione pathway
- ✗No Milk Thistle — no liver cell protection
- ✗No electrolytes
- ✗Primarily hangover relief, not liver health
#3 ZBiotics Pre-Alcohol Probiotic
Innovative probiotic angle, but very narrow mechanism
Pros
- ✓Unique genetically-engineered probiotic approach
- ✓Targets acetaldehyde in the gut
- ✓Liquid shot format — easy to take before drinking
- ✓Backed by scientific research on its specific mechanism
Cons
- ✗Only addresses one pathway (gut acetaldehyde)
- ✗No liver-specific ingredients
- ✗No NAC, no Milk Thistle, no electrolytes
- ✗Expensive per dose (~$9/shot)
- ✗Must be taken before drinking — not flexible
#4 Morning Recovery (More Labs)
Drinkable format with DHM, but underdosed and incomplete
Pros
- ✓DHM included
- ✓Prickly pear extract for inflammation
- ✓B-vitamin complex
- ✓Convenient liquid shot format
Cons
- ✗DHM dose not disclosed (proprietary blend)
- ✗No NAC
- ✗No Milk Thistle
- ✗Sugary drink format — not ideal
- ✗Must be refrigerated
#5 Flyby Recovery
Budget DHM option, but formula gaps limit effectiveness
Pros
- ✓DHM + Milk Thistle combination
- ✓Prickly pear extract
- ✓Affordable price point
- ✓4.3 stars on Amazon (7,200+ reviews)
Cons
- ✗No NAC — misses glutathione pathway
- ✗No electrolytes
- ✗Low DHM dose vs. clinical studies
- ✗Activated charcoal may reduce absorption of other ingredients
#6 Drinkwel
Vitamin-heavy formula misses the key active ingredients
Pros
- ✓Large vitamin B complex
- ✓NAC included
- ✓Milk Thistle included
- ✓Widely available
Cons
- ✗No DHM — misses the primary hangover mechanism
- ✗No electrolytes
- ✗Heavy on vitamins, light on actives
- ✗Outdated formula — predates DHM research
Why Cloud9 Daily Restore Is Our Clear #1 Pick
After three months of testing and reviewing the clinical literature, the answer is straightforward: Cloud9 Daily Restore is the only formula in this comparison that addresses all four biological mechanisms of alcohol-related damage at clinical doses.
The key differentiator is NAC. Every other supplement in this list is missing it. NAC (N-Acetyl Cysteine) is the direct precursor to glutathione — your liver's primary antioxidant. Alcohol metabolism depletes glutathione rapidly, and without replenishment, oxidative damage accumulates in liver cells over time. This is not a minor gap; it is the difference between a supplement that helps you feel better the next morning and one that actually protects your liver from long-term damage.
"Cloud9 is the only formula I found that treats the liver as the primary organ — not just the hangover as the primary symptom."
Our #1 Recommended Hangover Supplement
Cloud9 Daily Restore · A+ Score · All 4 Key Ingredients · 30-Day Guarantee
Check Cloud9 Daily Restore Price →30-day money-back guarantee · Ships within 2 business days