Ritual recently released its Synbiotic+ product, a blend of prebiotics, probiotics, and postbiotics that's designed to help support a balanced gut.
While some research does support the use of probiotics, particularly in individuals with IBS, research on their use in people without IBS is mixed (4).
A test-tube study supporting the use of Synbiotic+ is linked on Ritual's website, but more research, especially in humans, is needed to confirm the safety and effectiveness of the product (31).
Also keep in mind that there is a risk of bias because Ritual conducted the study.