Stop the pain quickly with 8-Hour Arthritis Pain Extended Release Tablets. These 650 mg acetaminophen caplets temporarily give relief caused by minor arthritis pain. With its resealable cap, this Tylenol bottle is great for traveling, or for your desk drawer at the office, or medicine cabinet at home. Contains: Acetaminophen; Description: 8-Hour Arthritis Pain Extended Release Tablets, 650 mg.