Tylenol 8 Hour Arthritis Pain Reliever Extended Release Caplets provide temporary pain relief for minor aches and pains including minor pain of arthritis and muscular aches. The first layer of the bi-layer design delivers fast-acting pain medicine for quick relief while the second has an extended release, offering effective pain medicine that lasts up to 8 hours. With 650 milligrams of the pain-relieving and fever reducing ingredient acetaminophen per caplet, this pain medicine also temporarily relieves aches and pains associated with muscular aches, backache, the common cold, headache, and toothache. This effective oral pain reliever is gentle on your stomach, but tough on arthritic joint pain and also works as a fever reducer. Made by the #1 doctor recommended brand for pain relief and fever reduction, it can be used by adults 18 years older and is safe when used as directed. Tylenol is also the #1 doctor recommended brand for arthritis pain.