There are a few reasons why wines contain sulfites. “While small amounts are often created by the yeast, most sulfites occur ...

Few topics in the wine industry fuel as much controversy as sulfites. These compounds are blamed for everything from flushed cheeks to morning-after headaches and plenty of alleged issues in between.

Q: Can I reduce or eliminate sulfites in wine by adding hydrogen peroxide (H2O2) to my glass?—Emmy, Cambridge, Mass. The chemistry of sulfur in wine can get fairly complicated, and it’s important to ...

The study also addressed whether sulfites, biogenic amines and tannins are among the causes of headaches after drinking red wine.