Drug Metabolism · Pharmacology

What is the primary role of Glutathione (GSH) in drug metabolism?

  1. To activate prodrugs in the acidic environment of the stomach
  2. To transport drugs across the blood-brain barrier
  3. To increase the lipid solubility of antibiotics before excretion
  4. To neutralize reactive, electrophilic intermediate metabolites
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Correct answer: To neutralize reactive, electrophilic intermediate metabolites

Glutathione conjugation is a vital protective mechanism. It binds to highly reactive metabolites, such as NAPQI (the toxic metabolite of Acetaminophen), preventing them from causing cellular damage and necrosis.

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