What supplements make your poop yellow? Causes and when to be concerned
                                
                                
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                                    5 min read                                
                            
                                According to research, stool color is primarily determined by a substance called bilirubin, but many dietary factors can influence the final hue. A recent change in your bowel movements might leave you wondering, "What supplements make your poop yellow?" While often harmless, several supplements can impact your digestion and, as a result, your stool's appearance.