I suffer from migraine headaches periodically throughout the month. I also have osteoarthritis in my back which can cause pretty bad discomfort and pain. I usually use pain relievers with caffeine because they work better for me. However, there is no way I can take these after a certain point in the evening or I cannot sleep. So I always like to have a bottle of nighttime pain pills on hand. I have bought a variety of name brands of this type of medicine over the years. When I saw the Equate PM Extra Strength Pain Reliever/Nighttime Sleep Aid I decided to give it a try. It works just as well as the others I've tried and it costs much less. Effectiveness This does a good job of relieving my aches and pains. It aids me in getting to sleep which is a bonus. Sometimes if I want to get to sleep and am having difficulties I will take this to help me fall asleep. Immediacy This takes about a half an hour to kick in for me.