Two nutrients on our panel interact with thyroid function from different directions, and thyroid patients deserve both explained in one guide rather than scattered across footnotes.
Iodine feeds the thyroid; biotin interferes with the tests that measure it.
- Iodine 42 mcg: modest, but thyroid-sensitive in autoimmune conditions
- Biotin affects TSH, T3 and T4 assays
- 72-hour pause before thyroid blood work
- Bring the ingredient list to your endocrinologist
Iodine: feeding the gland
Our panel provides 42 mcg of iodine (28% DV) as potassium iodide. In a healthy thyroid this is a modest contribution to the daily need (~150 mcg). In autoimmune thyroid conditions (Hashimoto’s, Graves’), additional iodine — even at modest doses — can aggravate the condition. Your endocrinologist knows your thyroid’s relationship with iodine; we do not.
Biotin: confusing the measurement
The biotin lab-test interference is especially relevant for thyroid patients because their condition is monitored by TSH, T3 and T4 assays — all of which can be affected. A falsely normal TSH in a patient whose medication needs adjusting is a real clinical risk. The 72-hour pause before blood work and the one-sentence disclosure to your clinician apply in every appointment.
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View Sale PricingThe conversation to have
Bring the ingredient list and say: this contains 42 mcg of iodine and 5,000 mcg of biotin. My thyroid panel uses [name of assay method]. Is this compatible? If the answer is no, the guarantee makes an unstarted order fully reversible.
That is the whole point of printing every dose: making this conversation possible.
The bottom line
Iodine feeds the thyroid (caution in autoimmune conditions); biotin interferes with the tests that monitor it. Both conversations belong with an endocrinologist.
This guide is published on the Gelagen official website — the only place our formula, our pricing and our 60-day guarantee all stand behind the same order.
Go To The Official Order PageGelagen is a dietary supplement supporting everyday skin health in healthy adults. It treats no skin condition and never replaces professional dermatological care. Statements on this page have not been evaluated by the FDA.