Yes, but carbonation on an empty stomach can be uncomfortable for people with reflux or sensitive stomachs. If your goal is hydration, plain water should be first; mineral water can be used later for mineral support. If you drink it in the morning, start with a small amount and continue only if you tolerate it well. Also, making a high-sodium mineral water a daily morning habit may not be ideal for salt-sensitive individuals. Label reading and personal tolerance are key.