Hello @chuckfrasher, Welcome to Mayo Clinic Connect. I've used several different brands of the R-ALA but was using the Premium Supplements brand before I switched to the Protocol 525 product (https://connect.mayoclinic.org/discussion/have-you-tried-the-new-protocol-525-product-for-neuropathy-relief/). Here's a product ranking page for 2021 if you want to compare a few of the top ones and prices.

Ranking the best alpha-lipoic acid supplements of 2021: https://bodynutrition.org/alpha-lipoic-acid/

There is another discussion you might find helpful if you want to learn what other members have shared:
- Member Neuropathy Journey Stories: What's Yours?: https://connect.mayoclinic.org/discussion/member-neuoropathy-journey-stories-whats-yours/

Have you been diagnosed with neuropathy?