FDA Requires New B6 Deficiency Warning on Parkinsons Drug
On March 20, 2026, the FDA issued a Warning (here) notifying healthcare providers and patients that Carbidopa/Levodopa drug products can cause vitamin B6 deficiency and vitamin B6 deficiency-associated seizures. The warning instructs healthcare providers to monitor B6 levels in their patients taking the combination therapy, and recommends taking a baseline B6 level at the beginning of treatment. B6 […]
