What is really good for knee stiffness and aches?

Rest! Most people's knee stiffness is due to an internal injury of the knee itself, whether it is cartilage as in arthritis or a meniscus tear, the first objective if the condition is acute is to rest the joint, use ice and an anti inflammatory agent such as Aleve or aspirin. If you have a history of stomach ulcers then us tylenol (acetaminophen) to manage the aching.