Nurofen Max Strength Joint & Back Pain Relief 512mg Tablets Nurofen Max Strength Joint & Back Pain Relief 512mg Tablets relieve mild to moderate pain such as headaches & migraine pain, dental pain, nerve pain, back pain, period pain, rheumatic & muscular pain & the pain associated with non-serious arthritis. They can also be used to relieve cold & flu symptoms & sore throats. Nurofen Max Strength Joint & Back Pain Relief 512mg Tablets 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.