Clarkia is an extra strong alcohol based tincture made from these three herbs: the green hull of black walnut, cloves & wormwood leaves and flowers. Dr. Hulda Clark recommends these three herbs for the parasite cleanse.These three herbs have been traditionally used as an herbal remedy against human parasitic animals, parasitic bacteria, parasitic viruses, and fungi. Besides herbs, Clarkia contains purified water and 37% grain alcohol. While doing the parasites cleanse, you may develop insomnia, and in that case, L-Ornithine will help you sleep throughout the night. Since you want to avoid coffee while doing the parasite cleanse, L-Arginine will help you stay energized.