Frequently Asked Questions

All of our lamps and bulbs have a life expectancy of 20,000 hours.

Our lamps are not serviceable for parts including the bulb.  The lamp has a 20,000 hour life expectancy.  We offer a one-year replacement warranty, if for some reason your device should fail within the first year of your purchase.

Yes. Gamma Light Therapy has customers all over the world.

Lamps: Our lamps are compatible with 100–240V power and include a standard US-plug wall adapter. For use in countries with different outlet types, our International Power Adapter is sold separately and includes interchangeable plug attachments for Europe, the UK/Hong Kong, and Australia/China.

Light bulbs: Our bulbs work on 100–240V and have a standard US (E26) base. If your fixture takes a different socket, you may need a socket adapter.

Night Lights: Our Night Lights have a US plug and are made for 100–120V only, so they can't be used in countries with 220–240V power.

Reading Light, GO Portable Light and Sound Player: These charge with the included USB cable and work with any USB wall charger.

We are a technology company based out of Pittsburgh, Pennsylvania, USA. Our focus is to provide precision products based on the most current research. We are not doctors and cannot provide any medical advice. We strongly encourage our customers to first contact their primary doctor before implementing any type of light or sound therapy.

All orders ship from our warehouse in Pittsburgh, Pennsylvania, USA. Orders are processed within 1-3 business days of your purchase.  The length of time that it takes to receive your order will vary depending on your location.

Please sign up for emails to receive 10% off of your first purchase.  We also offer various promotions throughout the year that you will be made aware of by being added to our email list.

Please contact partners@gammalighttherapy.com for more information.

We offer a 30-day money back return policy.  Please contact support@gammalighttherapy.com. For best assistance please provide us with your order number.

We offer a one-year replacement warranty.  If any of our devices should fail within one year of purchase we will send you out a replacement device.  This warranty covers failure of our devices and does not cover customer damage.  Simply contact our customer service at support@gammalighttherapy.com for assistance.  Your order number is required to file a warranty claim.

Please join our Facebook Gamma Light Therapy Group where you can interact & discuss experiences with other Gamma Light Therapy users.  Customer reviews can also be found on each of our product pages.