the lamp I have allows me to adjust the intensity and time I am getting the light which helps prevent it from throwing me into mania or mixed. I only use it when we are pretty sure it is safe and back off immediately if my mood goes up. Some years I use it and some I don't. It helps when I use it but it also is good to not use it sometimes.

Mine is apparently no longer sold. This is the closest choice I found from the same manufacturer. Amazon.com: Philips goLITE BLU Energy Light Therapy Lamp, (HF3422/60): Health & Personal Care