Top-grade Chondroitin Sulfate

An economical, effective joint supplement for horses, dogs & cats.

J-Flex Concentrate has been on the market for over 22 years, and it remains the most effective and economical joint supplement you can buy. The secret is the superior purity and bioavailability of our chondroitin sulfate extract. Chondroitin sulfate can be obtained from several animal sources (bovine, chicken, shark, among others), but not all chondroitin is the same. Springtime only uses the bovine (cow) variety, because it contains the highest concentration of chondroitin Type A, the most effective form of chondroitin. When you choose Springtime, you know you're getting the highest quality all-natural ingredients.


J-Flex Concentrate for Dogs & Cats

An economical and effective joint supplement for dogs and cats.


• Easy-to-feed powdered chondroitin sulfate*

• Promotes cartilage & joint health*

• Excellent for coat & skin*

• Most cost effective joint product on market

• Virtually tasteless & odorless

• Totally safe, non-toxic


J-Flex Concentrate for Horses

Our top-grade chondroitin is loaded with skin, bone & joint benefits for horses.


• Promotes cartilage & joint health*

• Most cost-effective joint product on market

• Minimum 90% pure chondroitin sulfate

• Each batch tested & verified by an independent lab

• Totally safe, non-toxic

• Virtually tasteless & odorless


What Our Customers Say About Springtime J-Flex Concentrate...

Don't just take our word for it! Read what our customers have to say about their own experiences with
Springtime J-Flex Concentrate for Horses and J-Flex Concentrate for Dogs & Cats.




22 Year Old Cat Still Able to Jump


Mr. Dickens

Dear Springtime:





Mr. Dickens adopted us 22 years ago. He wears a tortoiseshell coat, and has outlived both his original master and his adopted master who lived to age 80. The vet's records say he was about a year old when he first saw him. He has an annual checkup, teeth get cleaned every few years – no cavities, no extractions ever. …and while he is a bit slow he has no problem jumping up on the window bench for his breakfast and dinner – breakfast is laced with J-Flex Concentrate. At the rate he is going, he may well outlast me… I became acquainted with J-Flex Concentrate from a friend who has horses. Thanks for carrying this product.


Pat Beauvais, Arizona