Nurofen Joint & Back Pain Relief 256mg Caplets Nurofen Joint & Back Pain Relief 256mg Caplets relieve mild to moderate pain such as headaches & migraine pain, dental pain, nerve pain, back pain, period pain & rheumatic & muscular pain. They can also be used to relieve cold & flu symptoms. Nurofen Joint & Back Pain Relief 256mg Caplets contain ibuprofen which belongs to a group of medicines called non-steroidal anti-inflammatory drugs (NSAIDs) & works by changing the body's response to pain, swelling & high temperature.