NSAIDs: Non Steroidal Anti Inflamatory Drugs
NSAIDs are drugs such as aspirin, motrin, naprosyn, clinoril, feldene,
advil, tanderil, tolectin, indocin, and a few more.
They are used for inflammatory type pain and are very effective for
that purpose.  For arthritis sufferers it is a God send.

However, NSAIDs can cause gastritis (stomach pain) and even stomach
ulcers.  Therefore it is essential to take NSAIDs with a full meal.
It is also essential that if one's stomach is painful to stop taking
the NSAIDs and be evaluated by a physician.

Though it is not recommended to take NSAIDs  with a history of stomach
ulcers or gastritis, the situation may leave no other alternative for
pain control.   Thus, there is the H2 blockers and Cytotec that can
be taken along with the NSAIDs to greatly decrease to incidence of
the serious stomach side effects.