If taken in large quantities, long-term consumption will have no side effects. You can see that the label on the bottle has Joan Wei's food certificate. It means that this thing is food, not medicine. Having said that, if you eat too much, you shouldn't be able to absorb it for the time being. It should be harmful to your health. Not to mention health care products, even eating too many eggs will hurt your health! I've been taking it for three months, two tablets a day at most. No side effects.