Welcome to the forum, Michael. Thanks for the post!
Dietary supplements can be sold as “medical foods”, which are foods to be consumed under a doctor’s supervision for a specific medical condition. To the crux of your question, medical foods are not subject to additional regulations, research on efficacy or safety, or monitoring like medications are.
Tl;dr- It’s a supplement.
This particular supplement contains calcium, vitamins b12, b1, and b6, and alpha lipoic acid.
Alpha lipoic acid has been used as an adjunct treatment for diabetic neuropathy for some time now, though there is little supporting evidence for its use.
Vitamin B1 (thiamine) deficiency can cause neuropathy, as it plays a role in the initiation of nerve impulse propagation. It’s mostly a consideration for children with neuropathy due to dietary deficiency.
Vitamin B6 (pyridoxine) deficiency is also rare, and may produce a walking issue consistent with some forms of neuropathy. When it does occur, it’s typically in adolescents and causes issues with the skin, tongue, and later, may produce seizures. Related to neuropathy, there may be an issue with nerve fiber density.
Vitamin B12 (cobalamin) deficiency can occur in both children and adults and produce neuropathy, i.e. issues with loss of reflexes, vibration and positional sense, and so on in addition to other systemic signs.
It seems like your doc may be concerned for neuropathy due to vitamin deficiency, which is reasonable amongst an extensive differential diagnosis. Whether you would benefit from this specific medical food during the workup of your symptoms is not something I’m prepared to comment on at this time.
-Jordan