| Drug treatment - NSAIDs |
Nonsteroidal Anti-inflammatory Drugs (NSAIDs) are the most commonly used type of medication for back pain. They work by blocking a substance called prostaglandin. Normally, prostaglandins dilate blood vessels (leading to increased blood flow) and promote inflammation, both of which can contribute to pain. By stopping the usual actions of prostaglandins, NSAIDs help reduce pain and inflammation.
Types of NSAIDs
NSAIDs are available over-the-counter or by prescription. They are either seletive or non-selective. The prescription versions are generally stronger and last longer.
Non-selective NSAIDs include:
Selective NSAIDs include:
Risk of ulcers and GI bleeding
Regular use of non-selective NSAIDs, especially long-term use, can have serious complications like ulcers, bleeding from your gastrointestinal (GI) tract, and kidney damage. (Selective COX-2 inhibitors, however, may be associated with a lower risk of ulcers and gastrointestinal bleeding.) You are at particular risk of developing ulcers from these drugs (including bleeding ulcers) if you:

Other possible side effects
NSAIDs can cause or worsen the following conditions:
Finally, NSAIDs can cause: