ANSWER: a) Aldactone
DESCRIPTION
Porphyria is a condition in which there is excessive
metabolism of blood pigment that is hemoglobin, which may be either hereditary.
The urine turns dark on exposure to light. People with porphyria have mental
disturbances and also high sensitivity to the light. Drug such as Aldactone
which contains Spironolactone should be used with caution in patients having
porphyria. Spironolactone is a potassium sparing diuretic as well as
aldosterone receptor antagonist.