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One Molecule, Three Organs: Why the Same Drug Treats Erections, an Enlarged Prostate, and a Lung DiseaseThe active ingredient in this little softgel does something that should sound impossible. The very same molecule—tadalafil—is an approved treatment for three completely different problems in three completely different organs: erectile dysfunction, the urinary misery of an enlarged prostate, and, under another name, pulmonary arterial hypertension, a serious disease of the blood...0 Comentários 0 Compartilhamentos 7 Visualizações
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The Accidental Molecule: How a Failed Heart Drug Became the World's Most Famous PillIn the early 1990s, in a clinical trial run out of a Pfizer laboratory in the south of England, a group of male volunteers were testing a new compound meant to treat angina—the crushing chest pain of a heart starved of blood. The molecule, dryly labeled UK-92,480, was supposed to relax the vessels feeding the heart. It barely did. By most measures, the trial was a disappointment. Then the...0 Comentários 0 Compartilhamentos 6 Visualizações
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The Antibiotic With a Double Life: How Doxycycline Fights a Parasite, Calms Inflammation, and Stains TeethMost people meet doxycycline as just another antibiotic—for stubborn acne, a tick bite, a chest infection, or a trip somewhere malaria lurks. But it may be the quietest multitasker in the entire medicine cabinet: a single compound that poisons a parasite, calms inflammation, and even blocks the body's own tissue-dissolving enzymes—sometimes at doses deliberately too low to kill a...0 Comentários 0 Compartilhamentos 4 Visualizações
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Why Sildenafil Can Tint Your World Blue: What One Strange Side Effect Reveals About How Drugs WorkOne of the strangest and best-documented side effects of sildenafil is that it can briefly tint your vision blue. Objects take on a faint cool cast, lights seem brighter, colors shift slightly—and then, an hour or two later, it fades. It's usually harmless. But it's also a small, rather beautiful window into one of the deepest principles in all of pharmacology: a drug's side effects are...0 Comentários 0 Compartilhamentos 4 Visualizações
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