SBL_Kali Phosphoricum-3X is a homeopathic medicine that is made from the mineral potassium phosphate. This remedy is used to treat mental and emotional exhaustion, lack of concentration, and nervousness. It is also helpful in relieving headaches caused by mental fatigue. SBL_Kali Phosphoricum-3X is safe and easy to use, with no known side effects. It is a convenient remedy for those looking for a natural way to improve mental performance and reduce stress.