Thorne Thyrocsin
Description
Please note: Thorne charges a flat $5 fulfillment fee on ALL Thorne orders, despite the size of your order.
Thyroid hormones regulate the metabolism of proteins, fats, and carbohydrates, thus affecting how these macro-nutrients produce energy. A deficiency or excess of thyroid hormones can have far-reaching effects. For example, a high cortisol level can interfere with thyroid function, resulting in low thyroxine (T4) or poor conversion of T4 to the active form, triiodothyronine (T3). Each thyroid hormone has multiple important functions in the body; for example, T4 supports cardiac output, heart rate, respiratory rate, and basal metabolic rate – a low basal metabolic rate can cause a person to be fatigued, chilly, and have trouble losing weight. Thyrocsin provides nutritional and botanical support for healthy thyroid function, for the conversion of T4 to T3, and for normal cortisol levels.* This non-glandular thyroid-support formula is available only from Thorne.Thorne's Thyrocsin formula contains key ingredients for thyroid support, including iodine, which is necessary for formation of T4, and L-tyrosine, which is a necessary component of both T4 and T3 formation.* Animal studies have indicated that the Ayurvedic botanical, ashwagandha, can increase T4 concentrations.* Thyrocsin also includes several nutrient cofactors necessary for converting T4 to T3, including the minerals selenium, zinc, and copper.* Thyrocsin includes vitamin B12 because a deficiency of this vitamin appears to interfere with the activity of thyroid hormones.* Conversion of T4 to T3 can be inhibited by heavy metal toxicity and lipid peroxidation; hence, the inclusion of antioxidant vitamins C and E to counterbalance this inhibition.*
Suggested Use:
Take 2 capsules two times daily or as recommended by your health professional.
Warnings:
ALLERGY WARNING
This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.
Iodine may occasionally cause an allergic reaction in some individuals.
PREGNANCY WARNING
If pregnant, nursing, or trying to conceive, do not use this product.
INTERACTIONS
Tyrosine is contraindicated in individuals taking an MAO inhibitor antidepressant medication.
![](https://theswellscore.com/cdn/shop/files/swell_score_approved.png)
The Swell Score Promise
We carefully check products to confirm they contain the highest quality ingredients, match the label, and are free of hidden contaminants or fillers.
![](https://cdn.shopify.com/s/files/1/0727/3224/6300/files/uvp-icon-02.png)
Members Save On Everything
Swell Score members get discounts on everything. Click Here to learn about membership. Question? Or want to see the discounted Member Price on this item? Text us at: 833-697-9355
![Thorne Thyrocsin](http://theswellscore.com/cdn/shop/products/sf784__vd83391a23b9b045791b363e289c9dcef614217fd.png?v=1704347812&width=1)
Hear From Our Community of Wellness Warriors
![](http://theswellscore.com/cdn/shop/files/image_22.png?v=1720509223&width=1)
Health With Benefits!
Join our Exclusive VIP Membership and enjoy an average cart savings of 20%* plus member-only perks!
As a member, you support easy access to ultra-clean, carefully vetted beauty and wellness products that reward manufacturers committed to transparency, quality, and purity.
No more endless searches on Amazon and tedious price-checking for your personal care and health needs. Instead, unlock exclusive deals on top-quality supplements and beauty products, all guaranteed to be the BEST price. (Click here to learn more about our price guarantee).
Become A VIP Member Today →- Save 20%* on all orders
- Special member-only promotions and offers
Wellness Without The Worry – Safe,
Vetted, And Effective Products
Every product we offer is rigorously tested for safety and effectiveness, free from harmful
chemicals, and backed by real science.
Putting Your Safety First
Every supplement product passes rigorous third-party testing, and cosmetics get the green light from a top toxicologist. Your safety is our #1 priority.
Toxic-Free Beauty
No phthalates, parabens, or any of the 100’s of toxic (but legal) chemicals here. Our toxicologist scrutinizes every beauty ingredient so you get all the benefits with none of the nasties.
Your Home, Your Haven
All home products are low in emitting VOCs and EMFs, creating a truly safe sanctuary for you and your family.
Curated By Experts
Spend hours researching products only to end up more confused? Our medical team vets every product, so you don't have to.
Feel The Difference
Discover products that support your health, are backed by science, have expert reviews, and are thoroughly tested. Real wellness starts here.
Join Our Community Of 50,000+ Thriving Customers
Frequently Asked Questions
How long does shipping take?
Shipping times vary depending on your location and the items you order. Typically shipping can take 1-5 business days. Once your order ships, we'll email you a tracking number so you can monitor its progress.
Do you offer free shipping?
Can I change my shipping address after placing an order?
What if my package shows as "Delivered" but I can't find it?
What is the Swell Score Member Best Price Guarantee?
What's your return policy?
We accept return requests within 14 days of purchase. To initiate a return, email us at info@theswellscore.com. If your return is approved, we'll review your request and provide further instructions.
Please note: If you ordered Onward product insurance, you can request a return for any items within 90 days of purchase, no questions asked.
Are all items returnable?
How do I initiate a return?
What fees are associated with returns?
What if I received a damaged or incorrect item?
What are the benefits of a Swell Score membership?
Members save an average of 20% on every purchase, every day without needing coupons or a sale. Additionally, members are offered special product samples and promotional offers unavailable to non-members.
How do I become a Swell Score member?
Members are loving…
Free shipping on orders over $65*
Lab Tested Products
Safe & Secure Checkout
Members Save 20%*
![Thorne Thyrocsin](http://theswellscore.com/cdn/shop/products/sf784__vd83391a23b9b045791b363e289c9dcef614217fd.png?v=1704347812&width=1)