As long as the body can absorb it, you can drink it every day. Moreover, as long as it is a disease related to cellular blood, the water after drinking MRET for a period of time can help, but perhaps the situation of help will be different because of people's different conditions and constitutions. However, people with serious diseases and the elderly limit drinking every day and drink slowly, increasing little by little. People with pacemakers and doctors are forbidden to drink water.