Why You Feel This Bad —
And How IV Drip Fixes It Fast

Dehydration & Electrolyte Loss
Alcohol is an ADH (antidiuretic hormone) antagonist — it inhibits ADH production, causing the kidneys to excrete far more water than normal. For every standard drink, you lose approximately 100–150mL of excess urine. A big night out can produce a net fluid deficit of 1–2 litres, depleting Na⁺, K⁺, Mg²⁺, and Zn²⁺ simultaneously. This drives headache, muscle cramps, fatigue, and dizziness.

Acetaldehyde Toxicity
Alcohol is metabolised by ADH (alcohol dehydrogenase) into acetaldehyde — a highly toxic intermediate compound. Acetaldehyde is approximately 30× more toxic than ethanol itself. It causes DNA damage, protein adduct formation, mitochondrial dysfunction, and triggers release of inflammatory cytokines. Flushing, nausea, and tachycardia are hallmarks of acetaldehyde accumulation.

Inflammatory Cytokine Cascade
Alcohol disrupts gut barrier integrity, allowing bacterial lipopolysaccharides (LPS) to translocate into the bloodstream. This triggers systemic release of TNF-α, IL-6, and IL-10 — the same cytokines that cause fever and malaise during infection. This is why a hangover feels like being "flu-sick": it is a genuine inflammatory state, not just tiredness.

Glutamate Rebound & Sleep Disruption
Alcohol potentiates GABA receptors (sedating) and inhibits NMDA glutamate receptors. When alcohol clears, glutamate rebounds — causing hyperexcitability, anxiety, light sensitivity, and REM sleep disruption. This "glutamate rebound" explains why hangover sleep is non-restorative despite its length.

Vitamin B & Antioxidant Depletion
Alcohol metabolism heavily consumes Vitamin B1 (Thiamine), B6 (Pyridoxine), and B12 — cofactors essential for energy metabolism and neurological function. Simultaneously, glutathione (the primary antioxidant) is depleted processing acetaldehyde, leaving cells vulnerable to oxidative stress. This is why post-alcohol fatigue is disproportionate to actual exertion.