Convert your current dose of Synthroid or Levothyroxine to Armour Thyroid, Thyrolar or Naturethroid using the chart below:
Conversion Chart
| Synthroid/Levothyroxine |
Armour/Thyrolar/Naturethroid |
| 25 mcg |
1/4 grain |
| 50 mcg |
1/2 grain |
| 100 mcg |
1 grain |
| 150 mcg |
1 1/2 grain |
| 200 mcg |
2 grain |
| 300 mcg |
3 grain |
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