With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Naproxen is for pain relief.
text_B: Naproxen -LRB- brand names  : Aleve , Naprosyn , and many others -RRB- is a nonsteroidal anti-inflammatory drug -LRB- NSAID -RRB- of the propionic acid class -LRB- the same class as ibuprofen -RRB- that relieves pain , fever , swelling , and stiffness .. nonsteroidal anti-inflammatory drug. nonsteroidal anti-inflammatory drug. propionic acid. propionic acid. ibuprofen. ibuprofen. fever. fever. swelling. inflammation. It is a nonselective COX inhibitor , usually sold as the sodium salt .. Naproxen poses an intermediate risk of stomach ulcers compared with ibuprofen , which is low-risk , and indometacin , which is high-risk .. ibuprofen. ibuprofen. indometacin. indometacin. To reduce stomach ulceration risk , it is often combined with a proton-pump inhibitor -LRB- a medication that reduces stomach acid production -RRB- during long-term treatment of those with pre-existing stomach ulcers or a history of developing stomach ulcers while on NSAIDs .. proton-pump inhibitor. proton-pump inhibitor. stomach acid. stomach acid
related.