Essential Source's high potency (RK) enables us to use sublingual absorption, effectively avoiding gastrointestinal disruptions (upset stomach), which usually accompanies higher dosages of the pill form. Vote down - Vote up
If you are taking prescription drugs consult your healthcare practitioner prior to use.
Metabolic Advantage™† contains ingredients to support healthy thyroid function.† It does not contain purified thyroid hormones and is not a thyroid hormone replacement product. Therefore, it does not have a direct impact on thyroid levels. Vote down - Vote up