For most people, MSG is safe in normal amounts. Problems can only arise for those who are sensitive to this additive. Such people sometimes experience mild headache, skin flushing or heat feeling after consuming large amounts. These effects are usually short -lived and do not reduce a serious health risk. If you want to try to use it in a controlled manner, consider high quality msg e621 that is convenient for cooking. It's best to start with small doses to see how your body reacts.