The multi-pain relieving power of Advil® plus a gentle sleep aid. If aches and pains are keeping you up at night, Advil®PM Liqui-Gels® can help you get the rest you need. It works by combining the powerful pain relief of Advil® with a gentle sleep aid. Whether you have occasional muscle aches, backache, minor arthritis pain or other aches or pains, you can rest assured with Advil® PM Liqui-Gels®. Advil®PM Liqui-Gels®, real liquid power to rush relief where it hurts to ease you into a better night's sleep. Among non-prescription pain relievers.