Hi, this can be treated with ayurvedic medicines gastritis & constipation is sign of weak digestion. We need to control with ayurvedic medicine & diet . Pain in back might be due to other reasons like
kidney stones. I need more details to guide you properly.
Next Steps
consult online directly I can arrange medicines by courier
Health Tips
1) avoid oily spicy food .
2) start taking 2 spoons of ghee daily in the morning