74.若醫師決定處方鐵劑，下列何者最適當？
A.ferrous sulfate
B.ferric sulfate
C.carbonyl iron
D.iron dextran
答案:A
The ferrous form of iron is absorbed 3 times more readily than the ferric form.
Although ferrous sulfate, ferrous gluconate, and ferrous fumarate are absorbed almost equally, each contains a different amount of elemental iron that is available for absorption. Carbonyl iron, another iron product, is available but its use may be limited owing to the fact that iron in this form must be solubilized by gastric acid to be absorbed.
Iron dextran屬於注射型鐵劑，通常僅限於缺鐵性貧血嚴重，且不耐或不適用口服鐵劑的病人。例如長期的胃腸道出血，其鐵質的流失已超過口服鐵劑所能供應的鐵質
故本題最佳解答為A
參考資料APPLIED THERAPEUTICS The Clinical Use of Drugs ELEVENTH Edition p1930