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Description
SISU Ester-CSISU Ester C SISU Ester C helps in the development and maintenance of bones, cartilage, teeth and gums. An antioxidant for the maintenance of good health. Features: Ester C is a unique, patented form of calcium ascorbate, which is made when ascorbic acid (regular vitamin C) is buffered with calcium using a water based process The calcium in Ester C provides part of your daily calcium requirements Ester C contains active vitamin C metabolites including
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SISU Ester-C
SISU Ester-C helps in the development and maintenance of bones, cartilage, teeth and gums. An antioxidant for the maintenance of good health.
Features:
Ester-C® is a unique, patented form of calcium ascorbate, which is made when ascorbic acid (regular vitamin C) is buffered with calcium using a water-based process
The calcium in Ester-C® provides part of your daily calcium requirements
Ester-C® contains active vitamin C metabolites including L-threonate, which enhance cellular absorption and retention
Ester-C® is the only form of vitamin C that has been proven to last up to 24 hours in the white blood cells of the immune system
Less acidic and easier on the stomach than ascorbic acid
Enhanced with quercetin, a powerful bioflavonoid and antioxidant with anti-inflammatory and anti-histamine properties
Ester-C® has a clinically-proven, higher bioavailability and retention rate than other forms of vitamin C
SISU Advantages:
High-potency tablets for people wishing to supply their needs with fewer pills
Easy-to-swallow, coated tablets
Suitable for vegans
Contains no ingredients that are a source of gluten
Good Manufacturing Practices standards
Tested for guaranteed purity and potency
NPN approved
Ingredients:
Medicinal: (per tab) Vitamin C (calcium ascorbate*)...1,000 mg; Calcium (calcium ascorbate*)...125 mg. *from Ester-C® brand calcium ascorbate
Non-Medicinal: quercetin (100 mg), microcrystalline cellulose, magnesium stearate (vegetable), stearic acid (vegetable), silicon dioxide, croscarmellose sodium, maltodextrin, acacia, calcium carbonate.
Coating: hypromellose, vegetable glycerin.
Dosage: (Adult) Take 1 tablet daily or as directed by a health care practitioner.
Play the SISU Ester-C video on Youtube
Highlights
Features:
Ester-C® is a unique, patented form of calcium ascorbate, which is made when ascorbic acid (regular vitamin C) is buffered with calcium using a water-based process
The calcium in Ester-C® provides part of your daily calcium requirements
Ester-C® contains active vitamin C metabolites including L-threonate, which enhance cellular absorption and retention
Ester-C® is the only form of vitamin C that has been proven to last up to 24 hours in the white blood cells of the immune system
Less acidic and easier on the stomach than ascorbic acid
Enhanced with quercetin, a powerful bioflavonoid and antioxidant with anti-inflammatory and anti-histamine properties
Ester-C® has a clinically-proven, higher bioavailability and retention rate than other forms of vitamin C
SISU Advantages:
High-potency tablets for people wishing to supply their needs with fewer pills
Easy-to-swallow, coated tablets
Suitable for vegans
Contains no ingredients that are a source of gluten
Good Manufacturing Practices standards
Tested for guaranteed purity and potency
NPN approved
Ingredients:
Medicinal: (per tab) Vitamin C (calcium ascorbate*)...1,000 mg; Calcium (calcium ascorbate*)...125 mg. *from Ester-C® brand calcium ascorbate
Non-Medicinal: quercetin (100 mg), microcrystalline cellulose, magnesium stearate (vegetable), stearic acid (vegetable), silicon dioxide, croscarmellose sodium, maltodextrin, acacia, calcium carbonate.
Coating: hypromellose, vegetable glycerin.
Dosage: (Adult) Take 1 tablet daily or as directed by a health care practitioner.
Play the SISU Ester-C video on Youtube
Highlights
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.5 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 1
Tiny mop
Size: Small (12.00"), Size: Small (12.00")
It only lasted about 30 minutes with my medium size English cream retriever now it looks like a tiny mop, completely shredded a waste of money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
★★★★★ 5
Price is right for a dog that chews other toys up fast`
Size: Small (12.00")
Good inexpensive toy for aggressive chewer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
★★★★★ 3
DOG TUG OF WAR ROPE
Size: Medium (23.60")
A little too short, but very tuff tough the ends unravel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 9, 2025
★★★★★ 1
A real review.
Color: 2PC, Color: 2PC
When I saw the Unbreakable Teddy Extreme Bear 2.0, I thought, Finally! A toy that might survive my 9-month-old Rottweiler puppy, Pepper. She’s an aggressive chewer with a love for stuffies—she adores them, right up until she disembowels them and feasts on their cotton insides like a tiny, unhinged zombie. The toy’s name, "Unbreakabear," sounded promising. Durable? Stuffie-like? For large breeds? Sign me up!
Fifteen minutes later, it looked like a crime scene from a horror movie.
The Good:
Pepper was IN LOVE with this toy... for about 10 minutes.
The double pack is nice in theory—you know, so you have a backup when the first one inevitably doesn’t live up to its "unbreakable" promise.
The Bad:
False Advertising: This toy is marketed as "extremely durable for aggressive chewers." But let me tell you: Pepper’s chewing isn’t aggressive—it’s surgical. She shredded the bear’s ears, ripped off the tail, and then went straight for the brain like she was auditioning for Zombie Dogs Gone Wild. It didn’t even put up a fight.
Durability (or Lack Thereof): Calling this toy "extreme" is like calling a paper towel roll a chew toy. One good shake, and the seams basically exploded in surrender.
Safety Concerns: Once Pepper exposed the stuffing (and the metaphorical "brains"), it was a race to see if I could stop her from swallowing it. Stuffing everywhere. The floor looked like someone had murdered a carnival bear.
The Ugly:
Walking into the room after Pepper was done was like stumbling upon the aftermath of a teddy bear massacre. The "Unbreakabear" lay limp on the floor, its ears and tail missing, stuffing spewed around like it was the victim of a bear-sized horror flick. Pepper, triumphant, sat there with bits of fluff clinging to her mouth, looking like a deranged extra from The Walking Dead.
Final Thoughts:
If your dog is a light chewer who likes to gently cuddle their toys, this might be fine. But if your dog sees toys as a challenge, run. Stick to hard rubber toys, Kongs, or something without a vulnerable, squishy middle.
As for the warranty? Sure, I could try to get a replacement, but what’s the point? Pepper will just go full zombie surgeon again.
Would I recommend this toy? Only if you’re filming a sequel to Teddy Bear Massacre. For aggressive chewers, this is nothing but fluff and disappointment.
Pepper’s Review: 5/5 stars for taste. 0/5 stars for durability.
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Reviewed in the United States on January 15, 2025
★★★★★ 1
Toy does not live up to its name
Color: 1PC
This product is not sturdy enough for an aggressive chewer as it is advertised. It took my 7-year-old "Rottie" approximately 15-20 minutes to have this "unbreakable, in destructive aggressive chewer" toy rip open and stuffing everywhere. A complete waste of money and I would not recommend this toy to anyone with an aggressive chewer.
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Reviewed in the United States on April 19, 2026