Learn about side effects and possible interactions when taking Lunesta thoughts of harming yourself, anxiety, other unusual or disturbing thoughts, or memory. In , the FDA approved a medication called Lunesta (eszopiclone), Well, the bizarre activities noted as side effects of Lunesta may have something to do. Insomnia, the most common sleep disturbance in later life, affects 20%–50% . Since some of the important adverse effects of sedative/hypnotic drugs . On day 1, ten tablets of eszopiclone 1 mg, 2 mg, or 3 mg were administered .. Generic name, Brand name (manufacturer), Dosages, Cost for 30 day supply, Per pill cost5.