Mineral Cell Salt Combination M contains Sodium Phosphate, Sodium Sulphate, Potassium Chloride, Calcium Phosphate. Nat. Phos., Nat . Sulph., Kali. Mur., Calc. Phos. 12 tablets provide + 14.25ug of Biotin (28.5% Reference Intake). Formulated in accordance with Dr. Schuesslers principles and system.