For light constipation before you reach for any OTC drug - Heated Prune Juice with a slice of lemon in a coffee cup before you go to bed — should see some “action” the next morning. If not — another cup and you might want to stay close to home.
When I make homemade fruitcake, (I know everyone hates fruitcake except me. Anyway, I use prunes among other dried fruits. I wind up eathing half the box myself thus staying close to home the next day.