Iodine and thyroid
Prostadine and Thyroid: Iodine From Four Seaweed Sources
Prostadine and thyroid health are linked through iodine. The sales page lists iodine as its own ingredient and names four seaweeds, nori, wakame, kelp and bladderwrack, yet prints no amount for any of them. The total iodine in 2 ml is unknown, so anyone with a thyroid condition should ask a doctor before using it.
Written by the Prostadine label deskUpdated · 4 min read
Does Prostadine affect the thyroid?
Prostadine can affect the thyroid only through its iodine, and we cannot measure how much that is. No study has tested the drops on thyroid function, so there is no direct answer.
The thyroid uses iodine to make its hormones. Too little or too much can upset it. The adult daily upper limit is 1,100 mcg, and high intakes can cause goiter, an underactive thyroid or an overactive one (NIH ODS, Iodine).
Three facts explain why Prostadine is a question mark.
| Ingredient | Iodine source | Amount |
|---|---|---|
| Iodine | Listed on its own | Not printed |
| Nori, wakame, kelp | Seaweed | Not printed |
| Bladderwrack | Seaweed | Not printed |
How much iodine can seaweed supplements contain?
Seaweed supplements can hold anywhere from almost nothing to far over the daily limit. In one Norwegian check of 96 seaweed products, supplements ranged from 5 to 5,600 mcg per daily dose, and 54 products would pass the 1,100 mcg limit in a single portion (Aakre et al., Food Nutr Res 2021). The authors also found labels that were inaccurate.
Species and growing conditions change the amount too. A plain food seaweed can range from 16 to 2,984 mcg per gram (NIH ODS, Iodine).
That is a category fact, not a Prostadine result. It shows why a missing amount is a real gap and not a small detail. Our page on iodine in Prostadine covers the limits, and the seaweed page covers the three seaweeds.
Multivitamins, kelp tablets, iodized salt and dairy also add iodine. A thyroid doctor can help you count the full day.
Who should ask a doctor about Prostadine and the thyroid?
Anyone with a thyroid condition, or who takes thyroid medicine, should ask a doctor or pharmacist before using Prostadine.
- Hypothyroidism, hyperthyroidism, Hashimoto's disease, Graves' disease or goiter.
- Levothyroxine, methimazole or any antithyroid drug. High-dose iodine can add to antithyroid drugs (NIH ODS, Iodine).
- A recent thyroid blood test, or a scheduled one. Tell the lab and the doctor that you take an iodine-containing supplement.
One case report describes a patient whose kelp tablets were linked to a brief overactive thyroid (Gherbon et al., Medicine 2019). One case proves little, but it shows the route is real.
Do not change a thyroid dose on your own. Ask your doctor or pharmacist before adding drops.
Prostadine: from $49 a bottle2 fl oz (60 mL) dropper · 2, 3 or 6 bottles · 60-day money-back guarantee
See packsWhat should you do before ordering Prostadine?
Before you order, get the facts that the sales page leaves out, and share them with your clinician.
Ask for the label
Ask the order desk for a photo of the Supplement Facts panel. None appears in the vendor's images.
Find the iodine line
If amounts appear, add the iodine to what you get from food and other products, then compare it with 1,100 mcg.
Watch for symptoms
Fast heartbeat, shakiness, tiredness, weight change or a swollen neck deserve a call to your doctor. See the side effects page for more.
If no amounts exist, the 60-day guarantee lets you decide after you have a doctor's view.
Order Prostadine
Thinking of trying it? The bigger packs cost less per bottle.
Prices from the sales page, October 19, 2026 (Prostadine sales page). The 2-bottle pack is $79 a bottle plus $9.99 shipping. Every pack carries the 60-day money-back guarantee. Check your medicines first.
FAQ01
Quick answers on Prostadine and the thyroid
Can Prostadine change my thyroid blood test?
It might, if its iodine intake is high enough to shift thyroid hormones, but no study shows it. Tell your doctor you take it before any thyroid test, and ask whether to repeat the test after a few weeks of use.
Is the iodine in Prostadine from seaweed or added separately?
Both, by the ingredient list. Iodine is named as its own ingredient, and nori, wakame, kelp and bladderwrack are seaweeds that carry iodine on their own. How much comes from each source is not printed.
Can I take Prostadine if my thyroid is healthy?
A healthy thyroid copes with a wide range of iodine, but not without limit. With no amounts printed, you cannot check the total against the 1,100 mcg adult limit. A quick question to your doctor is the safer step.
Who wrote this02
Written and reviewed by
Pages built from the bottle front, the sales page and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . See our editorial standards and how we check reviews. This website is run by Goprostadine, a USA Authorized Prostadine Retailer, not by the manufacturer. We are paid when you buy through our order links.
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