Potassium sparing diuretics

• Facts:
  Acts on cortical collecting tubules
  
  1) Spironolactone ( aldosterone receptor antagonist )
  2) Triamterene and amiloride (block Na+ channel)
• Side Effects:
  Metabolic acidosis
  Hyperkalemia
  Gynecomastia ( spironolactone )
• See Also:
  Diuretic agents