Answer
Yes. Systemic metronidazole can darken urine; this is usually harmless, but jaundice or pale stools require medical assessment.
Sources for this answer
- Metronidazole 200 mg Film-Coated Tablets 21's (POM) (PL 43461/0067) — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.