Relief of Stress, Simple Nervous Tension, and Headaches Kali Phos. (Kali Phosphoricum), the nerve nutrient cell salt, offers restorative relief for symptoms of stress and nervous tension, occasional sleeplessness, and headaches by helping the body control pain signals, localize or resolve pain, and calm responses. Tablets are flavorless and dissolve immediately without water for no upset stomach. One of the 12 Mineral Homeopathic Cell Salts* Cell salts satisfy mineral imbalances in the body, stimulating the body’s natural healing process. When your body lacks these important cell salts, you are more vulnerable to common health concerns. By replenishing them, your body is better prepared to treat illnesses and enjoy better overall wellness. Kali Phos., derived from potassium phosphate, helps to restore health to the nerves of the body, combating the results of excitement, overwork, and worry.