I pray you will be led to whatever natural and/or alternative health helps are best for you. I have found cayenne pepper, several times a day, to be very useful for GI issues. Colloidal silver is also great. But, again, may you be led to what the Father knows is best for you.
Heavenly Father, may You bring relief and heal this one of the gastrointestinal symptoms he suffers from, whether it be instantly or thru the service of the medical field or being led to natural medicine, may it be according to how You choose to bring him relief, and thanks be to You, In Jesus Name, Amen