RenaPlus is a potassium gluconate supplement prescribed for cats and dogs. When your cat or dog suffers from hypokalemia, his potassium levels are low. Potassium plays an important role in the body: it is an electrolyte responsible for nerve communication and muscle movement. Low potassium levels are usually caused by kidney problems, but they can also be caused by cancer or other medical conditions. RenaPlus helps restore your pet’s potassium levels and relieve symptoms associated with hypokalemia. RenaPlus is available in tablets, powder, and gel.