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Not necessarily — but it's worth being aware of the risk. The FDA has added a warning that carbidopa/levodopa can lower vitamin B6 levels over time, particularly at higher doses (above 1,000 mg per day).

This happens in two ways:

- The body uses vitamin B6 to process levodopa
- Carbidopa may bind to vitamin B6, making it less Show Full Answer

Not necessarily — but it's worth being aware of the risk. The FDA has added a warning that carbidopa/levodopa can lower vitamin B6 levels over time, particularly at higher doses (above 1,000 mg per day).

This happens in two ways:

- The body uses vitamin B6 to process levodopa
- Carbidopa may bind to vitamin B6, making it less active This does NOT mean everyone on carbidopa/levodopa needs to automatically start taking B6 supplements. The recommendation is to:

- Have a doctor check vitamin B6 levels before and during treatment
- Only consider supplements if levels are actually low
- Never stop or change the carbidopa/levodopa dose without talking to a doctor first

Watch for symptoms like numbness, tingling, mood changes, muscle weakness, or fatigue, and report them to a doctor promptly. The key takeaway is that this is a manageable risk — not a reason to stop an effective treatment.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

FDA Adds Vitamin B6 and Seizure Warning to Carbidopa/Levodopa Treatments