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Description
Brain Basics Ultra Pure Selenomethionine 90 Capsules **This item may take extra time to ship* Immune & Thyroid Enhancer Clinical Applications: Powerful antioxidant and support for your immune system. Supports thyroid function and conversion of T4 to T3. Promotes normal cellular function, cell division, healthy heart function, connective tissue, eye and hepatic function. Features 200 mcg of Selenium as L selenomethionine. Description: Brain Basics Ultra Pure Selenomethionine is the most bioavailable form
*This item may take extra time to ship*
Immune & Thyroid Enhancer
- Clinical Applications:
-
- Powerful antioxidant and support for your immune system.
- Supports thyroid function and conversion of T4 to T3.
- Promotes normal cellular function, cell division, healthy heart function, connective tissue, eye and hepatic function.
- Features 200 mcg of Selenium as L-selenomethionine.
- Description:
-
Brain Basics™ - Ultra-Pure Selenomethionine is the most bioavailable form of selenium. Selenomethionine has been shown to be essential for proper thyroid function in particular conversion of T4 to T3 the active form of the thyroid hormone. It has also been found to support the immune system. Research studies have found that maintaining normal serum selenium levels is associated with support for normal cellular function, proper cell division, as well as healthy heart, connective tissue, eye and hepatic function.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 417 reviews
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Product Reviews
★★★★★ 4
Tough toy, but the yellow tire broke at the seam
Size: 10.5 inch Rubber Flex Tread
It was fun while it lasted and it got a lot of use, but it finally gave out after 6+/- months? Great tug toy. My dog is a 70# mutt with a strong bite and he's chewed through pretty much every other toy he's ever had. This one lasted longer than any of the others by quite a bit. He did zero chew damage to the tires, but the yellow tire in the middle broke at the seam. No tear, the seam just came undone at 90 degree angles. I'm going to look for something else this time but this wasn't bad considering how long it lasted and it wasn't very expensive. If I don't find anything tougher, I may purchase another one of these down the road.
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Reviewed in the United States on March 18, 2024
★★★★★ 1
Not for tough chewers at all!!!
Size: 10.5 inch Rubber Flex Tread, Size: 10.5 inch Rubber Flex Tread
5 minutes in and it's destroyed. Very disappointing.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Great chew toy
Size: 10.5 inch Rubber Flex Tread
This is my second time buying the Tonka rings. My dog loves this chew toy. It does take him a bit to destroy them. I give this toy to him as a reward otherwise it be destroyed in 3 days. I have a pitty. So other dogs it should last longer. They are shin whackers and hurt when they connect. So I make sure to watch the dog and toy around small kids and elderly to be safe. They are heavy and made well.
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Reviewed in the United States on October 29, 2025
★★★★★ 5
Finally a toy we can leave out!
Size: 10.5 inch Rubber Flex Tread, Size: 10.5 inch Rubber Flex Tread
There are very few toys that we can leave out for our 11 month old golden. Which is a shame because as a small puppy, we taught him to bring us a toy to initiate play instead of nipping. Ropes or stuffies never lasted more than a few minutes so they always had to be taken away. One time he brought us a benenbone to play tug. So I tried this as a last resort. Finally something we can keep out for him! It’s not completely indestructible. He has figured out how to pull bits of tread off. But he chewed hard on it for a solid 20 minutes and it’s still intact with the exception of a few small tread pieces. Can’t say that for 99% of the other dog toys on the market!
UPDATE: OK, so it's definitely not indestructible. After a few days of dedicated gnawing, he has almost chewed through the yellow ring so we can't leave him too unsupervised with it. I'm still going to leave it as 5 stars since it's the best tug toy that I have found so far and we have tried a lot! I may buy another one and just make sure I don't let him freely chew on it for any length of time.
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Reviewed in the United States on April 1, 2023
★★★★★ 3
Really wanted this toy to be better...
Size: 10.5 inch Rubber Flex Tread
I got this toy because I have 3 large dogs that all like to pull things. I can't always play with them even though they follow me everywhere wanting to play, so I saw this toy and thought it would be good because it would give them something they can tug away at with each other. I saw the thick rubber and thought it would last awhile, but I was wrong. My German Shepherd and Pyrenees mix chewed though the first tire rather quick, and before I realized, I was finding chunks of tire around the house and yard. Thankfully, none of them tried to eat it. It seems like it could be a good toy for an aggressive chewer IF they are smaller and not as strong as these large dogs are, but it did not hold up long to mine.
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Reviewed in the United States on November 23, 2024