We can see some doses, like the mcg of folate, but the more important doses are related to the less studied herbal ingredients and hormones ExtenZe employs. Oncotarget, 8 15 , Please visit official product sites for more information. The following ingredients comprise ExtenZe, as reported on the images of labels on vendor sites:. We also uncovered some positive reviews that say that ExtenZe pills work immediately.Same Day Delivery. Shipping. Add to cart. Extenze. Original Formula Male Enhancement, Liquid Cherry (Actual Item May Vary) – 2 oz x 2 pack. $ $ / oz. Pickup. Same Day Delivery. Extenze is marketed as a nutritional supplement for men that will help provide bigger, harder, more frequent erections. It also says that Exenze will increase endurance for longer lasting sessions. According to the official product site. FDA laboratory analysis confirmed that Extenze Plus (LOT H; EXP 12/) contains sildenafil, the active ingredient in the FDA-approved prescription drug Viagra, used to treat erectile.