What is the equivalent of 99 mg of potassium?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                While a medium banana contains about 422 mg of potassium, a common over-the-counter potassium supplement is limited to just 99 mg per serving. This significant difference often leads people to question, "what is the equivalent of 99 mg of potassium?" and why supplement dosages are so small compared to natural food sources. The answer lies in federal regulations and safety concerns related to concentrated potassium supplements.