Ferrous sulfate: Anemia not due to Fe deficiency. Folic acid: May obscure the symptoms of pernicious anemia while neurological destruction is progressive.
May impair absorption w/ food; compd containing Ca & Mg, including antacids & mineral supplements, bicarbonates, carbonates, oxalates, or phosphates. May decrease absorption w/ Zn salts. Diminished absorption w/ tetracyclines. Toxic complexes may form w/ dimercaprol. May delay response w/ systemic chloramphenicol. Decreased absorption of cefdinir, bisphosphonates, entacapone, fluoroquinolones, levodopa, methyldopa, mycophenolate mofetil & penicillamine. May reduce efficacy of levothyroxine.
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