Thanks for posting your query at DoctorSpring.com
I am Dr.R.K and I am pleased to assist you .
It looks like your husband is having functional dyspepsia and functional constipation. But few tests are to be done before calling it functional.
The following tests are to be done -
1. Complete blood count
2. Blood glucose
3. Thyroid function test
4. Ultrasound scan of the abdomen
5. Upper GI Endoscopy
6. Test for H.pylori
7. Stool occult blood test
8. Colon transit study.
You can discuss with his doctor about getting these tests done.
Meanwhile he can take nexium and miralax for symptom relief.
I hope that answers your query.
Let me know if you have any more questions.