Personality. Confident and empowering, a relief to be around. Herbal power. Relieves occasional constipation, generally produces a bowel movement within 6-12 hours. Reason to love. Just about everyone experiences constipation occasionally - uncomfortable, embarrassing and a real damper on life. For gentle, overnight relief, they love the senna-based herbal tea. Used for thousands of years to get your movement moving again, senna works by gently stimulating your intestines and aiding your body's natural elimination process. Sku: bmw43899931.