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In patients with hematemesis or melena, a nasogastric aspirate yielding blood confirms an upper source of GI bleeding, whereas a negative result almost always excludes an active upper GI bleed
24 Feb 2026
Safety and tolerability of rifaximin for the treatment of irritable bowel syndrome without constipation: a pooled analysis of randomised, double-blind, placebo-controlled trials
The evidence is mounting: people taking these drugs eat fewer calories, choose less beef, avoid processed foods, and eat more vegetables
Calcium homeostasis and cancer: insights from endoplasmic reticulum-centered organelle communications
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