Here's the problem with judging any nerve treatment by how you feel: nerve symptoms fluctuate on their own. Good days and bad days happen regardless of what you take. Without a method, you'll read random variation as signal — in whichever direction you expected.
Three well-documented biases work against you:
That last one is the big one, and it's why written baselines matter more than they feel like they should.
For seven days before your first capsule, record daily:
Four data points, thirty seconds a day. At the end, calculate: symptomatic days out of seven, and average intensity.
Keep recording daily, but evaluate weekly. A single bad Tuesday means nothing; four bad days in a week against a baseline of two means something.
If you start a supplement, change your diet, begin walking daily and improve your sleep in the same week, the result is uninterpretable. Stagger changes by a fortnight where you can.
This is genuinely hard advice to follow when you want to feel better. It's also the difference between knowing and guessing.
Inside the 60-day guarantee, past the brand's 30-day minimum. Compare your written weekly averages against your baseline week.
Meaningful: symptomatic days down from 6/7 to 4/7 sustained across three weeks. Average intensity down from 7 to 5 over the same period. Fewer nights disturbed.
Not meaningful: one good week. A day you barely noticed anything. Feeling generally more optimistic.
If your weekly averages get worse on a supplement regimen, stop and speak to a doctor — and mention the vitamin B6 content specifically, since high-dose B6 over time can cause exactly these symptoms. Worsening is not "it's working, push through."
Take your log to your doctor. "My symptoms are worse" is hard to act on. "Symptomatic days went from 3/7 to 6/7 over eight weeks, intensity up from 4 to 7" is clinical information — and far more likely to get you a useful response.
Read next: what the evidence says actually helps.