I found a few sources of the proper UVB medical light products. Seems like they help you produce Vit D which is of course exactly what we want.There are some excellent reviews for some of these products

Made In Canada https://solarcsystems.com/en/?v=3e8d115eb4b3

https://www.dermfix.ca/1000mx-psoriasis-uvb-lamp.html

https://uvb-lamps.com/treatment/?gclid=C...RIaAkXbEALw_wcB