A pregnant woman on methyldopa for hypertension notices her urine turning dark on standing. What is the best advice to give her?

Correct option is B

Methyldopa can cause harmless dark coloration of urine due to oxidation of metabolites. No treatment change is required.
Explanation of options: (a) ✘ Not necessary unless other side effects occur. (b) ✔ Correct; harmless discoloration is expected. (c) ✘ Switching is not indicated for this benign side effect. (d) ✘ Fluids won’t alter metabolite excretion.