According to the National Institutes of Medicine, potassium is an essential nutrient that regulates muscle, digestion, metabolism and overall homeostasis. However, excess serum levels of potassium results in hyperkalemia. The National Institutes of Medicine indicate that a prognosis for this condition can be difficult because it is fatal to some while others remain healthy. Nonetheless, it is important to visit a doctor to investigate causes of hyperkalemia, as it could be indicative of several serious health conditions.
The National Institutes of Medicine website states that horsetail, or equisetum arvense, can treat hyperkalemia because it is a strong diuretic. In fact, the National Institutes of Medicine assert that overuse of horsetail can cause hypokalemia, or dangerously low serum potassium levels. Other medical applications of horsetail include treatment of edema, osteoporosis, nephrolithiasis, urinary tract infections and wounds. It should not be used by pregnant and nursing women.
The website "Herbs to Health" states that bearberry, or uva ursi, can act as a urinary antiseptic as well as an astringent. Effectively cleansing kidneys, it removes toxins, including excess potassium. It also treats various infections, including E. coli, Staphylococcus, cystitis and prostatis. Contraindications include kidney disease and urinary tract infections that reach the upper urinary tract.
The Vitamins to Health website states that parsley is an effective diuretic. For this reason, like bearberry it can effectively cleanse kidneys. It does not have antiseptic qualities, but it thoroughly removes toxins, including acidic metabolites and excess potassium. It is contraindicated in those who are pregnant or experience particularly painful menstrual cycles.