Jan De Vries Flower Essences Night Essence has a combination of essences which may help maintain feelings of calm at sleep time. It contains a unique blend of White Chestnut, Chamomile, Walnut, Yarrow, Aspen, Bluebells and Morning Glory. If you feel tense or restless, this may help you feel more relaxed as well as refreshed. NOTE: Please seek professional advice before taking this product if you are pregnant or breastfeeding.