Allergy Research Group Modified Citrus Pectin Powder 16 ouncesAllergy Research Group Modified Citrus Pectin is a dietary supplement for immune function and detoxification support. Citrus pectin supports the elimination of some heavy metals from the body without loss of vital minerals. It also has anti inflammatory properties and supports the immune system through the activation of natural killer cells which are white blood cells that act in the destruction of cells that have been infected by microbes.