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What Should I Do If I Miss a Dose?

If you forget to take your Westhroid dose, 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.


Westhroid tablets come in the following strengths:
  • Westhroid ¼ grain (16.25 mg)
  • Westhroid ½ grain (32.5 mg)
  • Westhroid 1 grain (65 mg)
  • Westhroid 1½ grain (97.5 mg)
  • Westhroid 2 grain (130 mg)
  • Westhroid 3 grain (195 mg)
  • Westhroid 4 grain (260 mg)
  • Westhroid 5 grain (325 mg). 


You may notice that similar thyroid USP products have different milligram strengths. For instance, Armour® Thyroid 1 grain tablets contain 60 mg, while Westhroid 1 grain tablets contain 65 mg. A grain is an outdated measurement, and there is no consistent agreement as to exactly how many milligrams are in a grain.


Is There a Generic Version of Westhroid?

Currently, there are generic versions of thyroid USP available, although there is no way to know if they are really equivalent to Westhroid, since none of these products are approved by the FDA.
(Click Generic Westhroid for more information.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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