Comfrey

Pain/swelling relief

+61.1, faster healing

Pain ↓, 10%>1%

Pain ↓, placebo>diclofenac

Pain ↓, 27-50%

Pain/swelling ↓ recovery

Mobility/function ↑ recovery

Pain/swelling less, mobility up

Knee pain/function improved 54.7%

Heals faster +49%/day

Better efficacy, -3 days