In addition to medications, some supplements can also interact with levothyroxine: Iron: Iron supplements include ferrous sulfate, ferrous fumarate, and ferrous gluconate. Iron forms a bond with levothyroxine, causing it to be less absorbed. For this reason, levothyroxine should be taken at least 4 hours apart from iron supplements.
Iron Preparations: May decrease the serum concentration of Levothyroxine. Management: Separate oral administration of iron preparations and levothyroxine by at least 4 hours. Separation of doses is not required with parenterally administered iron preparations or levothyroxine.
Iron supplements can also hamper the absorption of Levothyroxine. Evidence shows iron competes with Levothyroxine for absorption in the
Iron Preparations: May decrease the serum concentration of Levothyroxine. Management: Separate oral administration of iron preparations and levothyroxine by at least 4 hours. Separation of doses is not required with parenterally administered iron preparations or levothyroxine.
In addition to medications, some supplements can also interact with levothyroxine: Iron: Iron supplements include ferrous sulfate, ferrous fumarate, and ferrous gluconate. Iron forms a bond with levothyroxine, causing it to be less absorbed. For this reason, levothyroxine should be taken at least 4 hours apart from iron supplements.
Levothyroxine interactions with supplements. In addition to medications, some supplements can also interact with levothyroxine: Iron: Iron supplements include ferrous sulfate, ferrous fumarate, and ferrous gluconate. Iron forms a bond with levothyroxine, causing it to be less absorbed.
Iron Preparations: May decrease the serum concentration of Levothyroxine. Management: Separate oral administration of iron preparations and levothyroxine by at least 4 hours. Separation of doses is not required with parenterally administered iron preparations or levothyroxine.
by M Ravanbod 2024 Cited by 85Our study is the first study to compare iron salt, levothyroxine, and iron salt levothyroxine in the treatment of subclinical hypothyroidism and iron-
iron preparations and levothyroxine by at least 4 hours. Separation of doses is not required with parenterally administered iron preparations or levothyroxine.
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