Allergy Research Group Full Spectrum Vitamin K 90sgAllergy Research Group Full Spectrum Vitamin K is a comprehensive vitamin K formula containing vitamins K1 and K2, as well as representative forms of the other fat soluble vitamins, vitamins A and D, and vitamin E as gamma and delta tocotrienols. Vitamin D and K may be deficient due to inadequate sun exposure (vitamin D) and low amounts in the diet (both).*