Nurofen Express 400mg Liquid Capsules Nurofen Express 400mg Liquid Capsules target headaches faster than standard paracetamol or ibuprofen with a 400mg dose, absorbing quickly into the bloodstream to target the source of the pain fast. As well as headaches (including migraines), they also relieve other mild to moderate pain such as dental pain, neuralgia, period pain, rheumatic, back & muscular pain & the pain of non-serious arthritis. They can also be used to treat feverishness & the symptoms of cold & flu. Nurofen Express 400mg Liquid Capsules 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.