Hyland's Natural Cell Salt #4 Ferrum Phos 6X offers homeopathic support for improved comfort and wellness. Called the "oxygen-carrier" cell salt, the ferrum phosphoricum in this formula provides homeopathic support for the body's natural healing process, thereby supporting healthy tissues. Hyland's Natural Cell Salt #4 Ferrum Phos 6X operates on the principal that by supplementing this cell salt, the body's cells will be better equipped to maintain mineral balance for optimal health and wellness.