The Evidence Tiers
Hangover supplement ingredients can be roughly sorted into three tiers based on evidence quality and mechanism relevance.
Tier 1: Well-evidenced, mechanism-specific
DHM (Dihydromyricetin): The strongest evidence for hangover-specific use. Addresses alcohol metabolism and GABA rebound. ✓
B Vitamins (B1, B2, B3, B6): Well-understood depletion mechanism. Replenishing them is straightforward and evidence-consistent. ✓
Milk Thistle (Silymarin): Decades of liver research. Supporting ingredient with clear mechanism relevance. ✓
Tier 2: Helpful but indirect
Electrolytes (sodium, potassium, magnesium): Address dehydration and electrolyte loss from alcohol's diuretic effect. Genuinely helpful but address one symptom vector rather than the underlying metabolism. ✓ (supporting)
L-Theanine: Sleep quality and anxiety modulation. Addresses the sleep disruption and GABA rebound components. ✓ (supporting)
Vitamin C: Antioxidant. Some logic to it given the oxidative stress of alcohol metabolism, but limited hangover-specific evidence. ✓/? (mild benefit)
Tier 3: Weak or no relevant evidence
Activated Charcoal: Binds to substances in the gut but alcohol absorbs too rapidly for it to have meaningful effect in a hangover context. ✗
Ginger: May help with nausea specifically but doesn't address alcohol metabolism or vitamin depletion. Limited benefit. ?
Prickly Pear Extract: Some early research suggesting anti-inflammatory effects. Evidence is not strong enough to be a primary ingredient. ?
The Red Flags
Supplements with long ingredient lists at undisclosed doses (proprietary blends) often underdose everything. A supplement with 20 ingredients is usually worse than one with 4-5 at meaningful doses. Look for transparency — if the label doesn't tell you how much DHM is in each dose, that's a warning sign.