Iodine
Primary Use / Function: Essential for thyroid hormone production; supports metabolic health and cognitive development
Daily Dose Range: 150–300 mcg (up to 1100 mcg upper limit for adults)
Frequency: Once daily
With Food? Yes, preferably with meals to minimize GI irritation
Enhancing Combinations：Selenium (supports proper thyroid function alongside iodine)
Tyrosine (precursor to thyroid hormones T3 and T4)
Gender Specific：No
Contraindications / Cautions: Excessive intake can lead to thyroid dysfunction (both hypo- and hyperthyroidism)
Avoid in autoimmune thyroid conditions unless under medical supervision
High doses may cause metallic taste, GI discomfort, or acne
Notes: Deficiency still occurs in some regions, especially with low-sodium diets
Seaweed supplements can contain very high levels—check labels carefully
