 ReliefFactor.com. Knee pain, back pain, joint pain, elbow pain. You've got to check it out. If you want to get out of pain, go to ReliefFactor.com. ReliefFactor is a 100% drug-free supplement that can keep your body out of pain and fight pain naturally. Developed by doctors, ReliefFactor uses a unique formula of natural ingredients. It doesn't just mask pain. It helps reduce or even eliminate it.