Severe heartburn                                                    
                        12 people found this helpful
                    
                             
        
            Cannot tolerate it. It caused severe heartburn and an upset stomach all day long. Most supplements have no ill effects on me, but I can't take this one. The fishy smell is so off-putting that it makes me gag. I will be returning to my regular Omega 3 supplements.        
         
        
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