Mild painkillers relieve pain for 3-4 hours. 5 Can't be ignored for more than 30 minutes. Mild painkillers reduce pain for 3-4 hours. 6 Can't be ignored for any length of time, but you can still go to work and participate in social activities. You can still function with effort.
Stronger painkillers are only partially effective.
8 Physical activity severely limited. You can read and converse with effort. Nausea and dizziness set in as factors of pain. Stronger painkillers are minimally effective. Strongest painkillers reduce pain for 3-4 hours.