No Thanks

Your 10% Off Promo Code is on the Way! Thanks for signing up for emails.

You're now signed up to receive exclusive deals and savings opportunities!

Thanks again for connecting with us. Keep an eye on your inbox — your first coupon is on its way!

Thank You! This email address is already signed up

You are signed up for the following:

  • Offers
  • Recipes
  • E-Newsletter
  • Updates & Reminders

Thank you for your interest and be assured that you will continue to receive our emails at this address.

Look for your next communication from us within the next week.


We are having trouble processing your request.

Our apologies!

Please try again later.

Swanson Ultra

SeMSC Selenium

Item | SWU171

  • Powerful antioxidant which protects against free radicals and oxidative stress

  • Trace element that is essential for many of the body's basic functions

  • Maintains cardiovascular, thyroid and immune health

  • Supports prostate health

Serving Information

  • Serving Size: 1 capsule
  • 200 mcg Per Serving
  • 120 Servings Per Container
  • Caps Size: 1
2 for $6.99
200 mcg 120 Caps
Limit: 3

Additional promotions and discounts are not available for this item.

Customers Also Bought

Supplement Facts

Serving Size 1 Capsule

  Amount Per Serving % Daily Value
Selenium(from L-Se-methylselenocysteine) (SeMSC) 200 mcg 364%

Other ingredients: Microcrystalline cellulose (plant fiber), gelatin, calcium palmitate.

Suggested Use: As a dietary supplement, take one capsule per day with food and water.

  • Powerful antioxidant which protects against free radicals and oxidative stress

  • Trace element that is essential for many of the body's basic functions

  • Maintains cardiovascular, thyroid and immune health

  • Supports prostate health

If you’re trying to find one of the most effective selenium supplements available today, look no further than Swanson Ultra SeMSC Selenium. The same form of selenium found in garlic, broccoli and Brussels sprouts, se-methylselenocysteine (alternatively, L-methylselenocysteine or SeMSC) is a high-bioavailability selenium/amino acid complex with unique protective benefits for colon and overall health. Selenium has potent antioxidant qualities that enable it to promote the blockage of cellular damage from free radicals. Find out what people like you are saying, by checking out our SeMSC Selenium reviews.

Terms and Ingredient Definitions

Shipping Weight: .15 lbs

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.

Rated 3 out of 5 by from AWFULL STENCH JUST STARTED TAKING WILL UPDATE LATTER. I'm looking for a replacement to caulifloer extract they stopped making. I'm still ticked off over that
Date published: 2019-03-21
Rated 1 out of 5 by from NO GOOD So, I got all my Swanson vitamins the other day---thought I would save money, however, when I muscle tested (using kinesiology) with them they all failed except the zinc. Thus, I have wasted my money and not saved at all. What a disappointment, entirely!
Date published: 2017-05-10
Rated 1 out of 5 by from SEMC Selenium SEMC Selenium, this product smelled so bad i was unable to take it. I bought 2 bottles and they both smelled terrible. I should have returned them but to big a hassle .
Date published: 2017-04-20
Rated 5 out of 5 by from Harsh smell This has a strong smell, but does not leave a bad taste or after taste. Great product overall.
Date published: 2017-01-01
Rated 1 out of 5 by from Did not work for me Not potent like before when it first came out. :(
Date published: 2016-09-23
  • y_2019, m_11, d_10, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_6, tr_35
  • loc_en_US, sid_SWU171, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_swansonhealth
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 16ms

Swanson Health started in 1969 in Fargo, ND with a mission to offer pure and potent health products at a great value. Nearly 50 years later, we continue to innovate science-backed vitamins and supplements, delivering wellness solutions that help people live simply healthier together, and find vitality at any age. Click here to learn more about us.

For nearly 50 years, Swanson Health's research and development team has delivered science-backed health and wellness products to people around the world. Our innovation is guided by clinical research, scientific consensus, emerging research and usage traditions, creating products that help you find vitality at any age. At Swanson, we don't hide our science behind proprietary formulas — we believe in easy-to-read, transparent labelling. What's printed on our labels, is exactly what you'll find in our products.

Swanson Health's purity and potency testing begins with our ingredient sourcing, continues through manufacturing, and goes beyond when a product hits the shelf. Our testing exceeds industry standards, ensuring each product meets our quality guarantees for purity and potency. Swanson facilities are Good Manufacturing Practices (GMP) certified, and we voluntarily participate in third-party, independent laboratory testing. With Swanson, you can be sure you're getting the most pure and potent health products at a great value. Click here to learn more about our quality standards.


Easy Refill

  • Get your favorite products delivered automatically
  • 10% off future orders of Swanson brand products in your subscription
  • FREE standard shipping on all future orders over $50
  • Control the frequency, delivery date, item quantity... or cancel at any time
  • Email reminders before each delivery
See all FAQs here