Welcome to HealthcareMagic forum.
Your wife’s symptoms seem to be due to gastritis / gastric ulcer. A spicy diet, deep fried food, too much of caffeine, increased stress and lack of sleep all can precipitate acute gastritis
The symptoms would improve with antacids - Syp Mucaine
gel 1 tsp three times a day before food for 3-5 days. Antacids are available over the counter at your local pharmacy.
Additional benefits can be obtained by taking proton pump
inhibitor drugs like omeprazole
. This is available over the counter as prilosec
OTC in some regions. In other regions you may need a doctor's prescription to avail it. You can take this once a day before food for 1-2 weeks.
Meanwhile along with these medications, restrict spicy diet and caffeinated drinks - coffee and other beverages, sleep well, avoid excessive stress and exercise adequately.
She should be fine very soon.
Hope your concern is addressed.
Wish you good health.