Kali phos Potassium phosphate Forms the grey matter: Kali phos combines with protein and oxygen to create the nerve fluid and the grey matter of the brain. Nervous symptoms arise when this tissue salt has been exhausted. Think of the overworked salary man, the exhausted student, or the weary housewife. Physical Problems: insomnia, headaches, indigestion triggered by nervous tension, physical conditions relating to the nerves, including shingles and skin conditions with itching & Exhausted Student, Homeopathic Medicine Cabinet, Salary Man, Cell Salts, Tissue Salts, Drooping Eyelids, Human Biology, Homeopathy Remedies, Homeopathy Medicine