I was using Kavinace Ultra PM and had fantastic results with it. I just received the Kavinace OS, supposedly its replacement. As you can tell from other reviews, it's hit-or-miss whether it works as well, or at all. Well I rolled the dice - no joy. Tried 1, no effect. Tried 2, perhaps a tiny effect, if at all. So I just wasted $49.<br /><br />Update: I emailed the company asking why KUPM was discontinued. The short answer is "big pharma". Here's their reply:<br />"The Kavinace line of products were discontinued back in April due to the FDA’s statement regarding the ingredient 4-amino-3-phenylbutyric acid. Per the FDA, that ingredient can no longer be labeled as a dietary supplement".

Most nights I get about 5 hours of sleep. I’ve tried other sleep aids and rarely notice a difference. Just takes me forever to fall asleep. I know NeuroScience and use their tasty chewable Gaba Trex during the day for work stress. Decided to add Kavinace OS at bedtime. This stuff knocks me out. I slept for almost 8 hours on the first night. Didn’t wake up once. I usually read in bed but when I take this, I’m sleeping in 10 minutes. Can’t stay awake if I try. Even still works when I’m in hotels for work travel. I no longer use it every night but when I do it’s lights out every time.

I have tried every kind of sleep aid there is, some over the counter and some prescription. This actually works better than all of them, and no drowsy feeling in the morning. It's different for everybody I think but this is worth a try for a good night sleep.<br />_INSOMNIAC_

This is the only aid that works for me. This new formula seems equal to its predecessor.

This product has been ruined. The company could have just removed “dietary supplement” from the label and been in compliance with the FDA. It is totally non-effective as a sleeping aid any longer.

I actually use this to help with anxiety. My job gets really stressful and this supplement really helps to calm me down and focus on one thing at a time. It actually doesn’t make me sleepy, just calm. I struggle with chronic fatigue so it’s weird that a supplement meant for sleep would help me stay awake and focused during the day, but it really does. If I take it before bed, I do fall asleep faster because my mind isn’t racing. It has never made me feel drowsy or foggy when I wake up. So it’s helpful during the day and/or before bed.