Vitamin D may be vital for the efficacy of low-dose naltrexone (LDN)

[Wonkmonk]

I think you can also take vitamin D3 transdermally

You can also get Vitamin D with a UVB lamp.

https://www.amazon.com/Midband-Ultraviolet-Lamp-Treatment-Timer/dp/B00NEUNJCY

But it is said to raise the risk of skin cancer. I don't know how high that risk is though.

 

[sb4]

But it is said to raise the risk of skin cancer. I don't know how high that risk is though.

Whilst that is worth bearing in mind, it is also true that vitamin D reduces skin cancer risk, and office workers have 4x the skin cancer than outdoor workers.

Of course getting uvb from sun vs a lamp is very different. I myself do use one periodically.