It is well known fact that PREVENTION IS BETTER THAN CURE. If a food harms you , you need to avoid it.
Body is a complicated mechanism of chemical reactions, antigen and antibody production trying to keep the body going normally. If any salt or agent disturbs the reactions in the body there is sign and symptom of illness. You have observed that Ajinomoto containing food causes you digestive problem and constipation
. So the best way is to avoid it. If you are still keen to have this type of food you need to have enough of fibre food with it along with fresh vegetable salad to prevent GIT disturbance and constipation. You cann add two spoons of isphagul(Bryan husk) to to half cup of curds and consume it after finishing your chinese Ajinomoto containing grub.
I hope this should help you in resolving your problem.
Dr. J. Ticku