How much potassium and phosphorus is in lobster?
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, a 1-ounce serving of cooked northern lobster contains nearly 300mg of potassium and over 150mg of phosphorus. The exact amount of potassium and phosphorus in lobster can vary, but this nutrient-rich shellfish provides a significant source of both essential minerals, along with other vitamins and protein.