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You are suffering from Gastritis
, which is called "Amlapitta" in Ayurveda
This disease is curable and you need not to worry about this as I will definitely help you in your problem.
You should continue taking your allopathic medicines and along with this, you should take these ayurvedic medicines-
1) Avipattikar Churna (100gm)
2) Muktashukti Bhasma (10gm)
3) Muktapishti Bhasma (2gm)
Mix all these and store them in a container.
Take 2 gms (almost 1 tsp) of this mixture half an hour before lunch and dinner with water.
Take amla (Indian Gooseberry) daily in any form (murabba,juice etc). This is best "Pitta Shamak"
Avoid pickle, tea, spicy food, fast food
You should continue this medicine for at least 3 months
As your problem is chronic, you should also take help of "Panchkarma", which is a body purification process.
I hope this will help you