Take control of joint and muscle discomfort with Tylenol® 8 Hour Arthritis Pain. Each 650 mg caplet features a unique bi-layer design: the first layer releases medicine fast for quick relief, while the second layer is time-released to provide sustained comfort throughout the day or night. It is specifically formulated to tackle the minor aches and pains of arthritis, as well as backaches, muscle aches, and premenstrual cramps. This formula is tough on pain but gentle on the stomach when used as directed. With just one dose lasting up to 8 hours, it allows you to stay active and focused on your day without the constant interruption of persistent pain.