Seawater is rich in elements and trace elements in the form of different salts that contain: chlorine, sodium, magnesium, calcium, potassium, fluorine, iron, manganese, iodine, etc. It can be used for oral consumption if it has all the food quality guarantees. To do this, it is collected, sterilised and cold microfiltered to preserve its properties and follows a range of checks to ensure that it is suitable for food use. We can find it packaged, prepared to dilute in fresh water and included in recipes or for cooking food. It is also present as an ingredient in dietary supplements, as it stands out as a source of marine magnesium (an essential mineral for the nervous system and for maintaining a normal state of mind). In athletic supplements, it contributes to rehydration and mineral replenishment. It has a prebiotic effect and aid in detoxification. In any case, it is important to follow the instructions on the product or dietary supplement for its correct use. People with hypertension or who need to moderate the intake of certain minerals in their diet should first consult a healthcare professional.