The symptoms suggest chronic gastritis, which is inflammation of the stomach lining that can be caused by:
H. pylori bacterial infection
Regular use of NSAIDs or other medications
Autoimmune conditions
Stress and lifestyle factors
Taking Tiniba (Tinidazole) 500mg without proper evaluation is not recommended because:
It may mask underlying serious conditions that need different treatment
Inappropriate antibiotic use can lead to resistance
The medication has side effects like nausea, headache, and metallic taste
Next Steps
Please consult a gastroenterologist for proper diagnosis and treatment plan rather than self-medicating with antibiotics.