Deep Relief Actiflex Patch contains Green Lipped Mussel extract and Hyaluronic Acid. The Green Lipped Mussel extract is a source of Omega-3 fatty acids. Hyaluronic Acid (HA) is produced naturally in the body and is a key component of skin, connective tissue and the synovial fluid around joints, where it helps to moisturise, cushion, lubricate and restore elasticity. Deep Relief Actiflex Patch uses hydrogel technology to cool the required area - helping to soothe for up to 12 hours. Fast acting and long lasting, the patch provides a flexible fit for targeted application to most joint areas such as knee, hip, shoulder, ankle, neck and elbow. It is drug free and can be used all day or all night. It can also be used whilst taking oral analgesic tablets.