Hello there!
Your husband needs a competent gatro enterologist as it is more than stomach pain. but for your gerd here are some tips they will help
Life style and diet modifications are mostl you need.
Losing weight (if overweight)
Avoiding alcohol, chocolate, citrus juice, and tomato-based products
Avoiding peppermint, coffee, and possibly the onion family[8]
Eating small, frequent meals rather than large meals
Waiting 3 hours after a meal to lie down
Refraining from ingesting food (except liquids) within 3 hours of bedtime
Elevating the head of the bed 8 inches
Avoiding bending or stooping positions
Pharmacotherapy
It still a trouble then
The following medications are used in the management of gastroesophageal reflux disease:
H2 receptor antagonists (eg, ranitidine, cimetidine, famotidine, nizatidine)
Proton pump inhibitors (eg, omeprazole,
lansoprazole,
rabeprazole,
esomeprazole,
pantoprazole)
Prokinetic agents (eg, aluminum hydroxide)
Antacids (eg, aluminum hydroxide,
magnesium hydroxide)
S Khan