†Restrictions apply (see details)
Login or create an account to earn points.


100 Capsules

Key Benefits and Actions*

  • Provides a broad spectrum of organic selenium forms
  • May help support the body’s natural free-radical defenses
  • May help support a healthy immune system
  • May help support cellular health

Ships today if ordered in the next 5 hours and 28 minutes!

Rewards Members will receive 200 Points for reviewing this product upon approval.

Availability: In stock

Learn more about our Autoship Program!

Full 30-Day Returns, Guaranteed.

Our return policy covers full refunds or replacements on items within 30 days of purchase.


Suitable for Vegans and Vegetarians

Free of:

Dairy, Egg, Fish, Shellfish, Tree Nuts, Peanuts, Wheat, Soy

Selenium by Seeking Health provides selenium in a natural complexed form called SelenoExcell®. This form is better absorbed and retained in the body compared to inorganic forms of selenium, such as selenite. It is also a more complete, bioavailable form than other isolated organic forms on the market today, such as standalone selenomethionine. SelenoExcell® is a high-selenium yeast complex that contains multiple organic selenium compounds that work synergistically, making it one of the most researched and recommended forms of selenium available. Unlike inorganic forms of selenium, this form of selenium is not adversely affected by vitamin C.*

Selenium is an essential trace mineral that inhibits the oxidation of lipids (fats) and works together with vitamin E to assist in the production of antibodies and maintain healthy liver, pancreas, thyroid, and heart function. It also serves as an antioxidant by activating glutathione peroxidase, an antioxidant enzyme that helps protect cell membranes from free radicals. In addition, selenium may help support the body’s natural defenses against damage from exposure to certain environmental toxins. Adequate levels of selenium are essential for healthy immune responses. Selenium may play a role in the normal production of antibodies, proteins produced by the immune system to respond to foreign substances that may pose threats to the body.*

Selenium is required for the normal activity of the enzyme that converts the thyroid hormone T4 (thyroxine) to the biologically active thyroid hormone T3. This is especially important because this active form (T3) is the body’s primary hormonal regulator of metabolism and is important for normal growth and development.*

Suggested Use

Take 1 capsule with food any time of day or as directed by your healthcare professional.


Children and pregnant or lactating women should consult their healthcare practitioner prior to use. Do not use if tamper seal is damaged. Consult with a healthcare professional prior to use if you have any medical conditions or you are taking any medications.

Serving Size: 1
Servings Per Container: 100

Supplement Facts

Selenium (as SelenoExcell® high selenium yeast) 200 mcg 286%
% DV (Daily Value) based on standard 2,000 calorie daily intake
**Daily Value not established

Other Ingredients: HPMC (capsule), ascorbyl palmitate, and silica.

Additional Info
Additional Info
Learning Center Find product FAQ and more! Click here.
Cost Per Serving $0.16
Delivery Method Vegetarian Capsule
Capsule Size 3
Storage Keep closed in a cool, dry place out of reach by children.
Age Suitability Adult
Manufactured In USA
Case Quantity 24
Dimensions (in.) Length: 1.875 / Width: 1.875 / Height: 3.25
Weight (lb.) 0.1000
Barcode 798295549327
Return Policy 30 Day Returns ― Learn more about our Return Policy.
Customer Reviews (11)
Excellent product
This has been a great source for selenium in a world of many choices. It's worked great for me and I like that I can trust this company to sell only the highest quality products. Review by Vicki (Posted on 9/18/2018)
Good pill
This is the good selenium that I take my doctor said so. He likes it so I take it all the time to be good. Review by Felipe (Posted on 9/1/2018)
This is high quality selenium. I need to take extra and this is the best you can get. Review by Ronnie (Posted on 8/22/2018)
Good for thyroid
Have been taking this for thyroid issues. Small, easy to take capsule, and I know I always get a quality product from Seeking Health! Review by Rachael (Posted on 8/3/2018)
Great for thyroid. I have been continuing to take this as part of my program. I feel much better. Review by FM (Posted on 7/31/2018)
Love these
Very easy to take just one a day...super small capsules so even those who may have an issue with capsules, these are about as small as they get. Happy to be using a quality product and hope to see results regarding my thyroid. Review by Jennifer (Posted on 7/27/2018)
My doctor told me to start taking this. So I listened and have been taking this one from SH. My doctor liked the brand and the supplement so if he’s happy them I’m obviously happy. Review by SN (Posted on 7/24/2018)
Helps with thyroid issues Review by Angela (Posted on 7/19/2018)
very small capsules
i like the size, makes it easy to incorporate. Review by MELISSA (Posted on 6/5/2018)
Endocriniologist Suggested
After learning from Dr. Izabella Wentz the necessity for hypothyroid patients to supplement with selenium, I asked my endocrinologist about it. She confirmed, without any doubt, the importance of taking selenium. I am thankful for functional medicine practitioners, such as Dr Lynch, who create products not only for a better life, but for life itsself. Review by Lori (Posted on 5/24/2018)
Loving this Selenium!
I've taken only tablets of selenium in the past, and while they may have done some good, I noticed a difference after a few weeks when taking this selenium in the capsule form. I take mine before bed. I believe using this selenium and a couple other key nutrients from Seeking Health is what is allowing my body to increase glutathione (slowly but steadily!). Order 1310017089 Review by CathyK (Posted on 7/21/2013)
Write Your Own Review

Only registered users can write reviews. Please, log in or register

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

You may also be interested in the following product(s)
Optimal Liposomal Glutathione Original Mint Optimal Liposomal Glutathione Original Mint
54 Review(s)
Trace Minerals Complex II Trace Minerals Complex II
34 Review(s)

You demand the best for you and your family. We research so we can give it to you. Our rapid growth is a testament to you, our customers.
Seeking Health is a proud honoree of Inc. 5000’s fastest-growing companies in America for the third year in a row.

NSF GMP Registered
BBB Accredited