Answer
It can reduce levodopa's effect unless levodopa is combined with a dopa-decarboxylase inhibitor, so the combination requires a medication review.
Sources for this answer
- Pyridoxine hydrochloride 50 mg film-coated tablets — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.