This variant of Gaia Herbs Thyroid Support shares the identical ingredient profile and dosage breakdown with the smaller bottle, making the analysis of its potential efficacy largely similar. It effectively delivers 200mcg of iodine, which is critical for healthy thyroid function and subsequent metabolic processes. However, the explicitly listed 80mg of Ashwagandha extract remains a significant limitation, as this amount is considerably less than the evidence-based dosages (typically 300-600mg for standardized extracts) required to achieve meaningful adaptogenic effects on stress, energy, mood, or cognitive function. The continued presence of a 630mg 'Proprietary Extract Blend' without specifying the individual component dosages means consumers cannot fully gauge the product's overall potency for its broad health claims. The primary advantage of this larger size is a more favorable price per serving, offering slightly better value for those committed to the product's formula despite its transparency issues.