Feeling sick after drinking water? It may not be what you think it is.

Feeling sick after drinking water does not always mean that water is the problem. Sometimes it’s what is in the water instead. Many “healthy” add‑ins like lemon, artificially flavored powders, sweeteners, or other ingredients can irritate your stomach and trigger nausea, bloating, or reflux.

If you notice nausea only when your water is flavored, that is an important clue. Citrus, high acidity, and sweeteners can relax the lower esophageal sphincter or stimulate more stomach acid, which makes it easier for contents to move the wrong direction and create a wave of queasiness or burning.

Start with the simplest test: switch to plain, room‑temperature water for a few days and see how you feel. If your nausea disappears, try re‑introducing one additive at a time and note any symptoms that return.

Some people are also sensitive or allergic to certain ingredients, including specific flavorings, herbal extracts, artificial flavors, and sugar alcohols. Here at LIDO, we only use natural ingredients and keep our formula free from any unnecessary additives.

If you’re still struggling with water-related nausea, check out our full breakdown of 8 Reasons You Feel Nauseous After Drinking Water—And How to Avoid It.