thorne: what is the leucine derived from in this product?

Thorne's leucine ingredient is derived from duck feathers (that are gathered off the ground and not taken directly from the ducks).

No, this is not a vegan product. Thorne's Magnesium Thyrocsin contains the amino acid, leucine. Their leucine ingredient is derived from duck feathers (that are gathered off the ground and not taken directly from the ducks).

Why isn’t the expiration date on the product?

Most Thorne bottles show expiration dates, however, some show a manufacturing date. If the product is showing a manufacturing date, it is good for 2 years from the manufacturing date. If you are still concerned, please contact us directly and we will be happy to help.

The label does not specify whether or not the product is vegan. It only specifies that it is gluten free. Neither the Leucine nor the silicon dioxide list source, so they may be a result of animal by product.

Thyroid Health Complex (Formerly Thyrocsin) - Thyroid Cofactors for Thyroid Function Support* - Vitamins B12, C & E, Ashwagandha, Iodine, Zinc, Selenium, Copper & L-Tyrosine - 60 Servings

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