"I need a CBD product that has zero THC for neuropathy and arthritis pain. I cannot have significant THC in this product. What would you recommend?"
In that case, I recommend the 18:1 formulations offered by Care By Design. I have no affiliation with them. However, I like that they use the whole plant when making their products (rather than isolating only THC and CBD); offer a variety of ratios; offer all routes of administration (other than combustion); clearly label their products in mgs of THC and CBD per dose; and are relatively easy to find. The 18:1 products do contain THC; however, becuase the THC content is so low, they are non-psychoactive.
I also recommend that you try a topical cream with CBD and THC. THC containing topical products (other than patches) will not cause any psychoactivity.
Hope this helps!