People with chronic heart failure often struggle with fatigue, making simple daily tasks difficult, but a new Iranian study suggests that lavender and valerian may help counter this symptom. Researchers divided 120 patients with heart failure into three groups that were given either a 530-milligram valerian root capsule, lavender aromatherapy or routine care. In a two-week period, people taking either of the herbal therapies reported significantly less fatigue than the control group.