Many Parkinson's patients have difficulty digesting after meals, which
can result in a poor attitude toward eating and drinking. Following
are suggestions to make the entire process more pleasurable.

Cut food into smaller portions and use blenders and food processors to
make drinks more enjoyable
When necessary, after checking first with your physician, use a mild
laxative but do not overmedicate for constipation. (Be sure to see
your doctor about constipation if it becomes serious)
Try drinking a glass of juice one half hour after breakfast to avoid
nausea
To avoid or quiet an upset stomach, try eating an oatmeal cookie with
your medication. Flat cola or ginger ale may also help