Sort through our index of health and wellness issues to find out more information regarding diet, fitness, beauty and more.


Antiparkinson Agents/Nutrient Depletion:
  • IronIron: Based on human study, iron may reduce the amount of levodopa absorbed by forming chelates with levodopa (Sinemet®) (2920496). Secondary sources cite that until further research is available, doses of levodopa and iron should be separated.
  • Niacin/Niacinamide:Niacin/Niacinamide: Based on human study, L-dopa, benserazide, and carbidopa may deplete niacin through reduced synthesis of nicotinamide coenzymes from tryptophan and increased urinary excretion of N1-methyl-nicotinamide (477187).
  • Potassium:Potassium: Based on reviews, L-dopa may increase urinary excretion of potassium, which may lead to hypokalemia (851038, 4927447).
Back to top

Copyright © 2011 Natural Standard (

Back to top

The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.