Dietary Supplement. Stress Management* With PharmaGABA™, Sensoril®, Lemon Balm & L-Theanine. Reduces occasional stress*. Produces calming brain waves*. Improves mood & focus Stress requires you to be at your best. Yet most anti-stress products work by sedating the central nervous system, causing drowsiness and impairing mental function. Serenelle helps you de-stress, while actually increasing your energy and focus.*. Reduces occasional stress: A human study found that Sensoril significantly reduced symptoms of occasional stre.