SRP: $15.28

90 servings

Olive leaf contains a notable polyphenol called oleuropein, which acts as both an antioxidant and an immune protectant. Long known as an antiviral, olive leaf extract was tested in one notable eight-week study on 29 adult men. Researchers found it improves the response of white blood cells, thereby promoting immune balance. This is a great delivery format—just spray five times to the back of the throat.