Exo Terra Electrolyte and Vitamin D3 Supplement 120ml Exo Terra Electrolyte can be used to help bring dehydrated and /or reptiles that have lost condition back to health. Electrolytes are minerals (magnesium, potassium, sodium, and calcium) that are lost through forms of dehydration, particularly in stress situations. Electrolyte maintains a balanced electrolyte flow within body fluids and supplies Vitamin D3 for proper calcium absorption. Vitamin D3 is vital for captive reptiles not exposed to UV-light to prevent or reverse metabolic bone disease. Supplement for reptiles Optimizes hydration For healthy bones & muscles Promotes overall health Provides important nutrients