Verilux HappyLight Full-Size – UV-Free Therapy Lamp, Bright White Light with 10,000 Lux, Adjustable Brightness, 2 Interchangeable Lenses, Detachable Stand, and Wall Mountable

Very Helpful : ) and still making a difference.
I bought the Happy Light Liberty 10k in September of 2014 after doing extensive research about Seasonal Affective Disorder (S.A.D.). I live 30 miles West of Pittsburgh, PA. It is absolutely beautiful here in the Spring, Summer, and Fall but this region of the country is notoriously grey and gloomy during the winter months. For years I have dealt with feeling depressed, lethargic, tired, and uninterested in social settings during winter. I’ve always felt like a there is a Summer version of me (happy, active, social) and a Winter version (sad, tired, lazy, reclusive). Typically my energy begins to decline in November but I usually stay in a good mood until January. Mid January through mid March is when S.A.D. hits me the hardest. Jan and Feb are the months with the least amount of Sunshine in the Pittsburgh region. It’s cold, dreary and very easy to talk yourself into staying indoors until Spring. After reading “Winter Blues” by Norman E Rosenthal I decided to take positive action in dealing with S.A.D. I started using this light in November 2014 to get a head start for Winter. I’ve used it for 20 to 40 minutes once a day (on cloudy days). I felt a difference immediately when I started using it. It made me anxious and wired with energy at first. After about a week the energy effect wore off from regular use. However, I haven’t been depressed once this Winter. So while my energy has been lower during the roughest months of January and February, I still have managed to keep the happy and optimistic disposition that I maintain during the rest of the year. To ease and/or eliminate the symptoms of S.A.D., I use this light in combination with healthy nutrition, regular exercise, meditation and a regular sleep schedule always aiming for 8 hours of sleep each night. At the time of writing this review, it is now the end of February 2015 and this is the first Winter season in years that I have not been depressed. I partake in social situations and have more energy than in recent winters. I haven’t used the High Energy lens (10k Lux) either, I’ve only used the Comfort Lens which lets 5k Lux through. Truthfully, this light has not given me the energy and zip that I feel in the Spring and Summer, but it has given me more energy than I would feel in the Winter without it. I wonder if I were to try the 10k Lux lens if my energy would sky rocket. The only reason I’ve held off from that is because I did experience eye strain when I first began using the light until I adjusted to it. I’m concerned that eye strain will be more prevalent with the High Energy Lens and since the Comfort lens has kept depression away I’ve been content with it. Overall, this is a well built product and easy to use. I highly recommend it to anyone with Winter Blues or Full blown S.A.D.. It has truly made a positive difference for me this Winter season! (The following is Additional info added in Jan 2017) I quit a day job at which I was miserable in 2014 and began following my passion of music and started my own business. Doing something I love has eliminated winter depression for me and I did not use the light at all in 2016. I’ve also added Yoga to my life on a regular basis for the past 8 months and it is a major happiness booster and stress reliever. However, it is the end January 2017 and we’ve been having very long stretches of short and grey days. Still no depression but I’ve been incredibly tired. My sleep pattern at night is sporadic so I’ve been napping frequently and have lost interest in doing anything extra the last couple of weeks. Some days I’ve had to force myself to do the things that “NEED” to be done. I’ve begun to use the light again because it does boost energy levels and helps achieve a steady sleep pattern when used as directed in the mornings and afternoons. Just don’t use it at night : ) You might not sleep at all. Just wanted to update this review to help anyone suffering with S.A.D. or just mild winter blues. It’s helpful to have someone who understands what this condition feels like. Many people seem to cruise along just fine during the Winter months. Some of us however, have a rough time without warm, sunny days. I’d like to re-iterate: do yourself a favor and read Winter Blues: 4th Addition by Dr Norman E. Rosenthal. Sending happiness, light, and peace. Namaste

Bright light
Works well. Bright light seems to work well to decrease the winter blues.

I bought this in Amazon Japan but it has a “polarized plug” with a very unusual shape and there is no adapter available for it here. I didn’t see this information in the publication, I assumed that as it is being sold here it would work.

It’s VERY bright. Comfort lens is sufficient. It’s small, portable, and meets my needs.