Cochrane · systematic review · CD007393

Topical capsaicin (high concentration) for chronic neuropathic pain in adults

Derry, S, Rice, ASC, Cole, P, et al. · Cochrane Database of Systematic Reviews · 2017 · Cochrane Library

SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
9
current version
GRADE rated
8
No studies
1
Included studies
NR
No studies 1 · 11.1%Ungraded 0 · 0%Very low 2 · 22.2%Low 0 · 0%Moderate 6 · 66.7%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

High‐concentration (8%) capsaicin patch compared with control patch (0.4%) for postherpetic neuralgia

Population: adults with postherpetic neuralgia
9 questions
OutcomeEffectEvidenceStatus / GRADE
Substantial benefit
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extractedNRNo studies
PGICvery much improved, week 8 and week 12
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extractedNRVery low
Moderate benefit
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extractedNRModerate
PGICmuch or very much improved, week 8
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extracted2 studies · 571 participantsModerate
PGIC much or very much improved, week 12
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extracted2 studies · 571 participantsModerate
Withdrawals due to lack of efficacy
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extracted6 studies · 2073 participantsModerate
Withdrawals due to adverse events
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extracted8 studies · 2487 participantsModerate
Serious adverse events
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extracted7 studies · 1993 participantsModerate
Death
High‐concentration (8%) capsaicin patch vs control patch (0.4%)
no estimate extracted8 studies · 2487 participantsVery low