"i&#039;ve used this for 10 years. i alternate between regular and extended release form. the extended release form seems to give me morning grogginess no matter how long i take it, but extended release has some benefits if you are not sleeping through the night. i was diagnosed with parainsomnia when i was 10 years old, and struggled with it for 20 years, after taking several different prescription medicines that didn&#039;t work or side effects were so awful, i started taking this. it has changed my life because now i feel like i have a life. i wake up refreshed with energy to make it through the day. i take only 3mg a night and started taking 3mg during the day to help with my fibromyalgia."