What are the side effects of tannins in wine?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                According to research, while tannins are powerful antioxidants, they can induce headaches in some people by releasing serotonin.  Beyond headaches, understanding what are the side effects of tannins in wine is crucial for those with sensitivities, as these natural polyphenols can cause a range of unpleasant reactions.