Some people believe that grappa is good for digestion because of the grape pomace that it is made from. The grapes contain many different antioxidants and nutrients that can help digestion.
I'm not a doctor, so I can't say for sure if this is true. But if you're struggling with digestion, it might be worth giving grappa a try. Just be sure to drink it in moderation, or you'll quickly have larger issues than digestion.