Does an 8% patch hurt?

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3755533/

> Patients were prepared for the patch with 4% lidocaine cream that was applied for 1 h prior to treatment. The capsaicin 8% patch (NGX-4010) was applied for 60 min to a maximum area of 1000 cm2. In the dose-ranging study, it was applied for 30, 60 and 90 min [Webster et al. 2010]. Treatment-related pain was dealt with by local cooling methods and oral oxycodone (1 mg/ml). In the first week after treatment, hydrocodone bitartrate/acetaminophen (5 mg/500 mg) was allowed as rescue medication up to day 5 only.

If you're not familiar with analgesics, stacking hydrocodone with acetaminophen is a common practice.

Is 5mg of hydrocodone a lot? Let me put it this way, 10 mg every 12 hours is for 'severe pain',

https://www.mayoclinic.org/drugs-supplements/hydrocodone-oral-route/proper-use/drg-20084881