There is scientific evidence that using synbiotic blends of prebiotics and probiotics in a supplement will improve the symptoms. (fermented-foods.com)
More recently, researchers have been experimenting with supplements called synbiotics, which combine a probiotic bacterial strain with what's called a prebiotic — essentially a type of sugar designed to feed the beneficial bacteria and help it thrive in the gut. (businessinsider.com)
Specific synbiotics in early life protect against diet - induced obesity in adult mice Mona Mischke — Diabetes, Obesity, and Metabolism (microbiomedigest.com)