steve2018 replied to rainbow's topic in MedicationRainbow, Drowsiness, lightheadedness and feeling disequilibrium are potential side effects. I ve been on Zopiclone for a year and a half now. Tinnitus started a year ago but wasn t sure it was the drug responsible. After research , Zop can cause tinnitus and certainly unsteadiness, feeling like you had a drink or 2. Something you will have to evaluate over time. All slleping pills seem to have this as a possible after effect unfortunately.