Fat Soluble Vitamins


    Vitamin D2 / ergocalciferol

    • fungal: UV exposed mushrooms

    Vitamin D3 / cholecalciferol

    • animal: fatty fish livers, dermal synthesis

    Vitamin 1,25-(OH)2 D3 / calcitriol active form

    Vitamin 25-OH D3 / storage form


    Vitamin A / retinol

    • plant derived provitamin beta-carotene: dark or yellow vegetables, carrots, and tree nuts
    • animal derived preformed retinoids: liver, kidney, eggs, and dairy

    Vitamin E / tocopherol 

    • plants: oils, leafy vegetables
    • animals: meat, eggs


    Vitamin K

    • K2 synthesized from K1 by intestinal microbes
    • plant: K1 (phylloquinone or phytonadione) green vegetables




      Colorado State University ExtensionFact Sheet No. 9.315

      Natural Medicines Research Collaboration



      Emily McDonald, MD

      Hello! I'm Emily, in addition to many other things, I am an allopathic doctor that left the health care system to find a better way to care for people and our planet. I no longer practice the kind of medicine we are used to seeing and using in America today - I am cultivating a practice community based herbalism for social justice and environmental harmony.