Aspro Clear is pleasant to take and works quickly because it forms a completely clear solution, ready to be absorbed as soon as you drink it. Aspro Clear contains Aspirin in an effervescent tablet form. It is totally soluble for rapid absorption. Aspro Clear is gluten, lactose and aluminium free. Do not use if you have stomach ulcers, are taking anti-coagulant therapy or are allergic to naproxen, aspirin, ibuprofen or other non-steroidal anti-inflammatory drugs (NSAIDs).