Core FLEX is a supplement that promotes joint health and is designed to give your body the nutrients it needs to maintain cartilage and tendon flexibility and decrease painful inflammation.

What Is Core FLEX?

We all experience joint pain as we get older. With repetitive use, the cartilage in our joints slowly begins to break down. This can cause stiffness, pain, decreased mobility, and even disability. Injuries can further increase the effect of these issues.

In order to maintain joint health one must give your body what it needs to stave off the common issues of age and wear on your bodies.

Core FLEX claims to provide the nutrients we need to counteract the effects of joint damage and wear. Core FLEX provides nutrients to the cartilage, tendons, and supporting structures to help maintain elasticity, strength, and flexibility.

Each Core FLEX tablet contains 11 nutrients that have been reported to improve joint health and decrease joint pain in knees, back, ankles, shoulders, elbows, etc.

Each bottle contains 240 pills. The daily recommended dose is 8 pills

How Does Core FLEX Work?

Core FLEX is an ultra-potent combination of 11 ingredients, verified by clinical research and included in clinical serving sizes, crafted to ensure the maintenance of strong and healthy tendons and ligaments.

Core FLEX’s all-in-one blend combines the efficacy of single ingredient products, with the synergy of an entire joint product lineup.

Core FLEX Ingredients

What are the ingredients and what do they do?

Chondroitin And Glucosamine:

Chondroitin and Glucosamine are substances found naturally in the body, and in particular, in and around the cartilage and other connective tissues. It aids in lubricating and providing thickness to the cartilage around damaged joints.

Chondroitin sulfate is a type of glycosaminoglycan and complex carbohydrate rich in sulfur, and is a relative of glucosamine. Chondroitin is one of the major constituents of cartilage, not only providing structure and stability, but also water for the purpose of lubrication.

Methylsulfonylmethane (MSM):

MSM is a naturally occurring, organosulfur molecule that can be synthesized both naturally and synthetically from DSMO. MSM appears to assist healthy biochemical communication between cells that may assist joint flexibility and mobility.

Cissus Quadrangularis:

Cissus quadrangularis (CQ) is a plant with a long history of use in traditional and folk medicinal systems, including thousands of years of documented use in the Siddha and Ayurvedic traditions.

Recent research has developed physiological explanations for CQ’s traditional efficacy, including the reduction of pro-inflammatory cytokines, modulation of the glucocorticoid system (in animal trials), and the proliferation of osteoblast (bone-forming cell) DNA.

Black Cherry Extract:

Black cherry extract contains a number of beneficial compounds, including high levels of anthocyanin – an extremely potent anti-inflammatory compound.

Turmeric (95% curcumin):

Tumeric is a root endemic to certain regions of Southeast Asia and India. Studies seem to suggest that its primary bioactive constituent, curcumin,  powerfully inhibits the enzymes that synthesize inflammatory compounds such as prostaglandins and leukotrienes.

In particular, basic research and molecular studies have now firmly established curcumin’s ability to dose-dependently and potently inhibit a transcription factor known as NF–kB – a molecule involved in the proliferation of pro-inflammatory cytokines, soft tissue destruction, and autoimmune responses.

Boswellia (37.5% boswellic acids):

Boswellia is a tree resin extract that is a traditional part of Indian medicine. In modern clinical trials the active agent, boswellic acid, has been found to inhibit the production of pro-inflammatory leukotrienes.

Similarly to curcumin, boswellic acids have demonstrated a significant attenuation of NF-kB production in various animal and invitro assays.

Bromelain (2400GDU/g):

Bromelain is a collection of protein-digesting enzymes found in pineapple juice and in the stem of pineapple plants. It has been shown to have a myriad of health benefits including speed of recovery, antioxidant properties, and assisting cardiovascular and circulatory health.

Vitamin C:

Vitamin C is not only a powerful antioxidant, but also supports a healthy immune system, protects cells from oxidized particles and free radicals, and assists other physiological functions

Vitamin D3:

Vitamin D3 is an essential hormone precursor that plays a vital role in many metabolic functions, including bone health, immune and cardiovascular health, muscle protein synthesis, and weight management.

Piperine (95%):

Piperine a black pepper extract is included because it dramatically increases the bioavailability of curcuminoids (see above). Without piperine, the serum concentration and absorption rates of the active agents in curcumin would be significantly reduced.

Piperine facilitates the full effects of the curcumin.

Core FLEX Pricing

C4 50X is priced between $40 and $60 for 240 tablets. At 8 pills per dose, this comes out to 30 doses.

Core FLEX Reviews

  • “Core flex is the best joint support supplement I have come across.”
  • “Noticed positive results much quicker than I thought I would. Elbow tendinitis pretty much cleared up after taking Core Flex. Great product.”
  • “Great product, no B.S no yuck feeling after taking them. Been using for about 6 weeks and I can definitely feel a difference. Less popping in my knees and hips and even in my wrists. This is a must have products for people who love to lift.”


  • It appears to really work well in improving joint function
  • The ingredients seem to have some very comprehensive science behind the claims


  • The only major drawback I can see is that it requires 8 pills in one dose

Customers seem to really like Flex. It’s an all in one joint medication that has proven results. In a world of false claims and snake oils, this, at least, appears to be legit.

Core FLEX Summary

Anyone who is interested in improving their joint health could benefit from Core FLEX. It is not reported to have side effects, and it actually works well. If you are in the market for a joint supplement, get this one.

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