“The main risk factors … gastrointestinal adverse effects during NSAID therapy are: a high dose regimen; age over 65 years; a … gastric or duodenal ulcer or gastrointestinal bleeding; heavy use of both alcohol and tobacco; and concomitant treatment with a corticosteroid, antiplatelet …, anticoagulant, or selective serotonin reuptake inhibitor (SSRI) antidepressant.”