Each serving provides 99 mg of potassium. Potassium Gluconate. (from potassium gluconate) 99 mg <>. Swanson Health Products. Potassium supports the function of the muscular system. Conclusion: Potassium, of which fruits and vegetables are a major source, plays a key role in blood pressure regulation, bone health and kidney function, and improving its intake relative to sodium can provide significant health benefits.