Drug Classifications and Illicit Drug Quiz Related

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Tetracycline needs to be given on an empty stomach because it chelates with:

  • A. Calcium
  • B. Magnesium
  • C. Iron
  • D. All of the above
Correct Answer: D

Rationale: Tetracycline forms insoluble complexes with divalent and trivalent cations (calcium, magnesium, iron), reducing absorption when taken with food containing these elements.