A Naturalistic, Controlled, Crossover Trial of Plum Juice versus Psyllium versus Control for Improving Bowel Function

Abstract

Prunes and prune juice have long been used to improve bowel regularity. Because of its high fiber content, plum juice may also improve bowel function, as well as have the potential to reduce appetite and excess body weight via an effect on satiety. This controlled study evaluated the effects of consuming a daily portion of plum juice (PlumSmart) prior to a meal for 14 days in 36 adults reporting chronic constipation symptoms, compared with a non-fruit source of fiber, psyllium (Metamucil) and equicaloric, fiber-free clear apple juice (placebo control). The main findings were 1) that softer stools were associated with plum juice compared to apple juice alone and apple juice with Metamucil 2) plum juice was as likely as psyllium to provide immediate relief (within 24 hours of first use) of constipation symptoms, and both performed better than the placebo (apple juice alone), and 3) the taste of plum juice was equal to apple juice alone, and was preferred over apple juice with psyllium. This study provides preliminary evidence to support the daily use of natural product, plum juice, as an accepted and effective treatment for stool softening and immediate relief of constipation symptoms. Study supported by Sunsweet Growers, Inc.