Nature's lab - potassium citrate - 120 vegetarian capsules potassium plays an important role in maintaining normal muscle and nerve function, and also helps to promote healthy blood pressure (within normal limits). Potassium citrate is a highly bioavailable and well-absorbed form of this nutrient used for advanced. Nature's lab gold potassium citratre is an optimal way to get a source of potassium. One vegetarian capsule contains 250mg of potassium, over 150 more milligrams than other brands. . Nature's lab potassium citrate healthy - 120 vegetarian capsules (120 servings)