@ramblinman I discovered it while studying post surgery diets. It apparently was used by nurses for hospital patients with these issues. Do a search and you'll find quite a bit on it.

Here are a few recipe and a few notes
Prune Juice Laxative Recipe
• 1 cup (8 oz) prune juice
• 1/2 cup apple juice
• 2 tbsp unsalted butter
Warm it up and drink it 🙂
• Use a stovetop or microwave to heat the prune juice until it’s warm (but not boiling)
• Stir in 1 teaspoon of unsalted butter. If you prefer, you can slightly reduce or increase the butter to match your dietary needs.

Moderation is Key: Most individuals only need to use this prune juice remedy once daily or once every other day for quick constipation relief. Observe Your Body’s Response: If you experience cramping, bloating, or diarrhea, reduce the serving size or frequency.

Why butter?
• Introduce Healthy Fats: Fats can help stimulate the production of bile and other digestive juices, potentially speeding up intestinal motility.
Ease Consumption: The slight creaminess of melted butter makes warm prune juice more palatable for some people.