FLEX Rx can help dogs of all breeds and sizes. Fed once daily, FLEX Rx has been proven to improve and maintain joint health, in even the most challenging cases. FLEX Rx is a fitting product for dogs that have not responded to traditional over the counter options and for pet owners that want more positive results. FLEX Rx allows pet owners to manage their dogs’ joint health with confidence.

Unique Mode of Action

FLEX Rx is the first product of its kind developed to specifically address joint problems that dogs frequently develop. FLEX Rx manages joint health at the metabolic level, affecting specific metabolites such as arachidonic acid (AA), which contribute to joint deterioration. These pro-inflammatory AA metabolites have been found to play a critical role in the osteoarthritis process. FLEX Rx also provides a powerful antioxidant effect, five times greater than vitamin E, to help protect cells and cartilage from oxidative damage.

A More Effective Option

Because FLEX Rx works differently than other over-the-counter joint health products, pet owners can now manage their dogs’ joint health with confidence. In a multi-center clinical study, FLEX Rx proved to be more than twice as effective than glucosamine/chondroitin at improving joint function and mobility.

Proprietary Ingredients

FLEX Rx contains highly purified flavonoids, a blend of natural ingredients, derived from phytochemical food source material that has been shown to promote healthy cartilage, tissue and joints. The patented formulation of active ingredients in FLEX Rx is comprised primarily of the flavonoids balcalin and catechin. These two flavonoids have a long history of successful use without side effects.

Proven Results

In a clinical study using veterinarian and pet owner visual analog scale (VAS) assessments, FLEX Rx showed significant improvement in pain scores over the combination of chondroitin sulfate and glucosamine hydrochloride and manganese ascorbate (Cosequin® DS). At the 28-day interim and 56-day final analysis, FLEX Rx was proven to be more than twice as effective at relieving pain scores than Cosequin® DS1.

Excellent Safety Profile – No Side Effects

Some dogs can be sensitive to prescription non-steroidal anti-inflammatory drugs (NSAIDS). Gastrointestinal upset, kidney and liver dysfunction are some of the reported problems. Because FLEX Rx works differently, the enzymatic pathway imbalance that is typically the cause of dangerous side effects is dramatically decreased. FLEX Rx’s mode of action properly balances the enzymatic pathways that can lead to joint problems.


  • Works differently than traditional over the counter products
  • Unique mode of action supports long-term joint health management
  • Powerful antioxidant benefit to absorb harmful free radicals
  • Addresses underlying causes of joint deterioration
  • Scientifically proven results
  • All natural ingredients
  • Satisfaction guaranteed