Knee Lateral Collateral Ligament Injury. Lateral collateral ligament (LCL) is a thin set of tissues present on the outer side of the knee, connecting the thighbone (femur) to the fibula (side bone of lower leg). It provides stability as well as limits the sidewise rotation of the knee.
OTC Pain Relief: Understanding Acetaminophen. Youâve probably taken acetaminophen at one time or another for fever or pain relief. You may know acetaminophen as the active ingredient in Tylenol and many other over-the-counter (OTC) products, including cold medications. When used as directed, taking acetaminophen is generally safe and effective. But it can be harmful if itâs not taken correctly.
Acetaminophen 500 mg is an active ingredient in Tylenol PM, according to Drugs.com. Acetaminophen acts to reduce fever and provide pain relief. This ingredient works by blocking prostaglandins, which are chemical signals that can cause fever and pain. However, Tylenol PM does not have anti-inflammatory effects like nonsteroidal anti-inflammatory drugs (aspirin, ibuprofen) do. According to Drugs.com, acetaminophen has no common side effects.