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Levothyroxine

Drug Interactions

Levothyroxine can potentially interact with several other medications, including non-prescription products (see Drug Interactions With Levothyroxine).
 

What If I Take an Overdose of Levothyroxine?

People who take too much levothyroxine may have overdose symptoms that can include:
 
(Click Levothyroxine Overdose for more information.)
 

What Should I Do If I Miss a Dose?

If you forget to take your levothyroxine, take your missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose. Each time you get your blood tests to monitor your thyroid function, be sure to tell your healthcare provider if you have missed any doses, as this may affect any dose adjustments.
 

Available Strengths

Levothyroxine tablets come in the following strengths:
 
  • Levothyroxine 25 mcg
  • Levothyroxine 50 mcg
  • Levothyroxine 75 mcg
  • Levothyroxine 88 mcg
  • Levothyroxine 100 mcg
  • Levothyroxine 112 mcg
  • Levothyroxine 125 mcg
  • Levothyroxine 137 mcg
  • Levothyroxine 150 mcg
  • Levothyroxine 175 mcg
  • Levothyroxine 200 mcg
  • Levothyroxine 300 mcg.

 

Levothyroxine soft gelatin capsules are available in the following strengths:
 
  • Levothyroxine 13 mcg
  • Levothyroxine 25 mcg
  • Levothyroxine 50 mcg
  • Levothyroxine 75 mcg
  • Levothyroxine 88 mcg
  • Levothyroxine 100 mcg
  • Levothyroxine 112 mcg
  • Levothyroxine 125 mcg
  • Levothyroxine 137 mcg
  • Levothyroxine 150 mcg. 

 

Sometimes, the strengths are given in milligrams (mg) instead of micrograms (mcg), which can be confusing. Because there are 1000 mcg in every mg, levothyroxine 100 mcg is the same thing as levothyroxine 0.1 mg.
 
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Levothyroxine Sodium Tablets

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