This is an important topic and a good article from the “A Matter of Taste” site on the topic. If you are a wine enthusiast, it might be something to consider for future purchases. If you are interested, use the link to access the website here:
European Wines vs. U.S.
This issue highlights the local AVA, DOCG, AOC (etc.) regulations/laws. Some of the typical U.S. additives are not permitted in much of Europe: chaptalization, acidifying and fining agents, etc. The chemical additives category may be an even more important topic of discussion. I have found generally, I NEVER get headaches from French/Italian fine wines. Hit or miss with U.S. product.
What is your experience? Do you think it could be additives? If so, the only option to change this, is speak with your dollars. When visiting tasting rooms and talking to retailers, ask about additives. If you can’t obtain the info, consider that in your buying decision. I am a huge proponent of listing ingredients on wine labels. If you just can’t part from your faves, consider one of the several wine filtering utensils available in the aftermarket… but consider these too. Could they be using chemical agents to filter the wine? Happy wine hunting!