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What health conditions affect how ferrous sulfate and folic acid work?

Folic acid and ferrous sulfate, or any iron supplement, have health benefits. But not everyone can safely take them. Factors that may affect how folic acid works include:
  • Other medicines
  • Anemia related to folate deficiency
  • Malabsorption (difficulty absorbing nutrients from food)
  • Liver disease
  • Kidney dialysis
  • Taking anti-convulsant medicines 
Iron supplements may be affected by:
  • Excess levels of iron
  • Anemia
  • Porphyria (a genetic disorder of the skin or nervous system)
  • Thalassemia (a genetic disorder of red blood cells)
  • Receiving regular blood transfusions

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.