How much of prune juice per day for an adult to help constipation?

My father has constipation problem, his doctor told him prune juice will help. The question is how much should he drink a day, one big glass/day? I heard that it's more effective when drink warmed prune juice? Thanks in advance!

as we called it where i worked, the geriatric cocktail. About 90-120 ccs heated should do the trick..bout 1/2 to 1 cup.

How should i get rid of my constipation and bloating after i just finished a diet?

I have recently gotten off of my diet, just a low calorie diet, and now i am starting on a new eating plan which is 5 small meals a day to help speed up my metabolism and i have been eating the daily intake of fiber and having a healthy balanced diet and i exercise a lot and i've been drinking water and i've even tried a gentle over night laxative. What should i do to get rid of my bloating and constipation?

Prune juice and cranberry juice. Not the cocktail kind. Continue drinking water. You may also try adding flax seed meal to your diet. You can buy it a health food store. A few sprinkles a day keeps the doctor away.