TruImmunoProLQ 4 oz provides immune support in a pleasant-tasting liquid. Research suggests that certain herbs, mushrooms, and other natural compounds can support normal immune functions such as natural killer (NK) cell activity, cytokine synthesis, and T-cell and B-cell mediated responses.** Ingredients such as elderberry, shiitake, and wild cherry bark are known for their beneficial effects for maintaining a healthy immune system.** TruImmunoProLQ Liquid is sweetened with glycerine, tastes great, and is ideal for both children and adults.