Natures Way - Senna Leaves 450 mg. - 100 Vegan Capsules Natures Way Senna Leaves are TRU-ID and non-GMO certified. These capsules are for relief of occasional constipation. This product generally produces bowel movement in 6 to 12 hours. 450 mg. of Senna Leaves in Each Capsule 1350 mg per Servi