Here’s a plot twist: the water itself might be the problem. Tap water has minerals like calcium and magnesium, which are fine, unless you’re sensitive. Some people get nausea from the chlorine or fluoride in municipal water.
On the flip side, if you’re using a Brita filter that’s three months overdue? Eww. Old filters breed bacteria. Change your filter, or try distilled water for a few days. Your stomach wins when the water is boring and pure.
Why Do You Feel Nauseous After Drinking Water? Causes & Fixes – Frizzlife
The "Empty Stomach" Gambit
Drinking water on an empty stomach is like knocking on an empty room—it’s just… weird. Your stomach has lots of acid waiting for food. When water hits it, you dilute that acid, which can slosh around and hit your esophagus. Hello, queasiness.
Solution? Eat a cracker first. One cracker. Or drink water with a small snack. Your stomach needs a little "carpet" to land on. Think of water as a guest that needs a chair, not a dance floor.
