DOUBLE VALUE PACK of Hylands Homeopathic Biochemic Phos Cell Salts 500 tab - Nervous Exhaustion, Irritibility and Insomnia A combination of all 5 Phosphate Cell Salts for a synergistic, balanced formula. Calc. Phos. Ferrum Phos. Kali Phos. Mag Phos. Natrum Phos. Based upon Dr. Scheussler's theory, the five phosphates know as Biochemic Phosphates are recommended for functional nervous disturbances and brain fatigue due to overwork and worry. All remedies are at 3X potency. ... Dr. W.H. Scheussler's Biochemic Theory is the foundation of the Hyland's Cell Salts. Dr. Scheussler identified 12 different "salts" that are present in every cell in the human body. According to Dr. Scheussler, when cells become deficient in one or more "salts," certain symptoms appear. When that "salt" is replaced, the symptoms abate.