Month: September 2019

L-T3 pharmaceutical equivalency, Part 2: New thyroid science

What does NEW thyroid science have to say on the topic of thyroid pharmaceutical equivalency? How many micrograms of L-T3 Liothyronine (i.e. Cytomel) are equivalent to L-T4 Levothyroxine (i.e. Synthroid)? Thyroid hormone pharmaceutical monographs currently provide very rigid and low-ratio… Read More ›

Pharmaceutical equivalency of levothyroxine (LT4), liothyronine (LT3) and desiccated thyroid

In thyroid therapy, how many micrograms of Cytomel (T3) are equivalent to how many micrograms of Synthroid (T4)? Pharmaceutical equivalency statements in the product monographs for Pfizer Canada’s Cytomel and for ERFA Canada’s “Thyroid” (desiccated thyroid extract, DTE, or natural… Read More ›

L-T3 and L-T4 Equivalency: Reference List

Part 1: Five historical voices say: “No, 25 mcg of L-T3 Liothyronine isn’t equivalent to 100 mcg L-T4“ Part 2: Contemporary thyroid science: “L-T3 pharmaceutical equivalency, Part 2: New thyroid science“ REFERENCES Pharmaceutical monographs Armour Thyroid web page: Erfa… Read More ›

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