Western Research Laboratories has been offering a natural alternative to treat hypothyroidism since 1934. Nature-Throid™ and Westhroid™ contain natural thyroid hormones (Thyroid USP) derived from freshly excised and promptly frozen porcine glands. They are bound with microcrystalline cellulose, making them the only natural, hypo-allergenic treatment for those who are sensitive to food allergies.

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