Picture this: you’re out with friends, you resist for a while but finally give in to one glass of your favorite red. Just one. Yet the next morning, your head feels like you finished the entire bottle. Sound familiar? Then this piece might interest you — because it looks exactly at that mystery: the heavy head after a single glass.

This article draws on the work of Dr. Erik Skovenborg, a Danish family doctor who has studied this phenomenon for many years, along with other related research.

We’ve kept the language as clear as possible. A few technical terms appear, but only where they add value — each with brief explanations so the reading flow stays easy.

The Usual Suspects: Sulfites and Tannins

When it comes to wine-related headaches, sulfites and tannins are the most common culprits. (Don’t worry if you see “sulfur” and “sulfite” used interchangeably — wine texts often do that.) Research, however, shows little direct link between either of them and headaches.

Sulfite levels in white and red wines are roughly the same, and sulfites appear in many everyday foods. Our bodies naturally process thousands of milligrams of sulfites every day, so the roughly 20 mg in a glass of wine is insignificant. Only people with asthma should be cautious, as they can have higher sensitivity.

Tannins, too, are mostly innocent. While reds contain far more of them than whites, tannins actually have anti-inflammatory and antioxidant effects — more likely to reduce pain than to cause it.

Migraines and Phenolic Compounds

About one-quarter of migraine sufferers report that certain foods or drinks can trigger their attacks — and red wine often tops the list.At London’s Princess Margaret Migraine Clinic, researchers found that a 300 ml glass of Spanish red triggered migraines in most participants within three hours, while vodka with the same alcohol content did not.

The main difference between red and white wine lies in phenolic compounds such as anthocyanins, the pigments that give red wine its color. Some migraine-prone individuals react badly to these compounds but can tolerate lighter rosé wines instead.

Histamine (Biogenic Amine) Headaches

Roughly 8–10 percent of people have some degree of histamine intolerance. Histamine is a natural compound involved in immune responses, stomach acid, and nervous-system signaling. In people with histamine sensitivity, alcohol slows down the body’s ability to break it down. As a result, they may experience headaches, nausea, diarrhea, or itching after drinking wine.

Histamine in wine forms during malolactic fermentation — the process that softens sharp acids. Normally, sulfites help keep histamine-producing bacteria under control. So paradoxically, wines with sulfites are often safer for histamine-sensitive drinkers.

Some countries set upper limits for histamine in wine: • Germany – 2 mg/L • France – 8 mg/L • Australia – 10 mg/L. No official limit exists in Turkey. Those sensitive to histamine should choose young whites or young reds fermented in stainless steel, and avoid wines made without sulfites or those aged long on the lees.

The “Red-Wine Headache” Syndrome

Dr. Herbert S. Kaufman of the University of California described what he called the Red Wine Headache (RWH) syndrome. In his studies, most participants developed a dull, deep headache after just 100 ml of red wine; with 200 ml, that number rose to 90 percent.

When subjects took 650 mg of salicylate half an hour before drinking, only two experienced headaches. Later studies showed that 200 mg of ibuprofen or 300 mg of aspirin helped prevent RWH, while paracetamol did not.

Red Wine and the “Flush” Headache

When we drink alcohol, the body converts it first into acetaldehyde and then into acetate through specific enzymes. About 30 percent of East Asian individuals carry a genetic variant that slows this conversion, causing flushing, headaches, and nausea.

At UC Davis, Professor Andrew Waterhouse and his team found that a compound called quercetin in red wine inhibits the enzyme that breaks down acetaldehyde. Grapes exposed to more sunlight produce more quercetin — and this compound exists only in wines fermented with grape skins. Since white wines are made without skins, and rosés only briefly with them, these wines are generally safer for those who react strongly to reds.

What Can You Do?

If one glass of red wine gives you a headache, the best approach depends on your own sensitivity:

• If you’re prone to migraines, steer clear of dark, full-bodied reds.
• If you have histamine intolerance, avoid sulfite-free wines; instead choose young whites or reds made in stainless steel.
• If you’re sensitive to quercetin, try lighter-colored wines made from grapes grown in shadier vineyards.
• And for short-term relief, aspirin or ibuprofen can help — though only temporarily.

In the End

Red-wine headaches don’t have a single cause — and sulfites or tannins aren’t the real villains they’re made out to be. Migraines, histamine sensitivity, acetaldehyde metabolism, or compounds like quercetin can each play a role, varying from person to person In short, that “drum-in-the-head” feeling after one glass usually isn’t the wine’s fault at all — it’s the delicate, unpredictable chemistry between you and the wine.