About this item Magnesium emphasized supplement with vitamin C, vitamin D3, biotin, iron, zinc, and vitamin B12 Comprehensive magnesium supplement formulated with PABA. Includes vitamin C, vitamin D3, and biotin Gluten free. Free from wheat, corn, yeast, dairy, eggs, fish, shellfish, peanuts, and tree nuts Many sensitive individuals who typically react to nutritional supplements tolerate Optimox products Established in 1978 by Guy Abraham, MD, Optimox brought clinical research to evidence-based nutritional formulas.