Kava Kava (piper methysticum extract) is an herbal extract traditionally used to support relaxation. The active ingredient in Kava providing these benefits is Kavalactones. Most Kava Kava supplements are not standardized to any amount of Kavalactones and may contain none at all. Double Wood's product is standardized to nearly 5% kavalactones to ensure you are getting the active ingredient. Double Wood's Kava Kava capsules are Vegan Safe, Manufactured in the USA, Non-Gmo, and Gluten Free. It contains 120 capsules and each serving is two 500mg capsules (1,000mg). Our capsules can be taken by mouth or opened up and poured into a drink such as tea or coffee.