Fast Flex Reviews: Does It Really Work for Pain Relief?

Fast Flex is a clinically-proven aid that promotes and preserves joint health by regenerating & repairing damaged tissues, resulting in healthier joints.
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What is Fast Flex?

Fast Flex is designed to provide ‘total joint health’ for damaged, worn, and unprotected joints while also relieving the pain, stiffness and inflammation associated with an aging body. It may also aid in relieving the symptoms caused by certain other joint conditions including arthritis, osteoarthritis, fibromyalgia, and gout.

Fast Flex
Editor’s Rating
3.8 / 5.0
Fast Flex Reviewer Rating

Fast Flex

Blackmores Joint Formula contains revolutionary ingredients that ease joint inflammation and slow down the breakdown of cartilage.

Buy on AmazonBuy on Walmart*All the prices mentioned on their websites are subject to change.

The official website features suggestions for complementary products and has a section containing a written endorsement of the Fast Flex product by one of the company’s medical consultants, the neurosurgeon Dr. Joseph Maroon.

The product can be purchased directly from the GNC site but is also available in independent retail stores. Unfortunately, there are no customer reviews of Fast Flex on the GNC webpage, nor are there anywhere else on the internet. However, there do not appear to be any complaints about the product either, and most people would feel very secure ordering a product from a company such as GNC.


  • Product Name:Fast Flex
  • Brand:GNC
  • Form:Tablet
  • Unit Count:60 Tablets
  • Price:$34.67
  • Ingredients:Glucosamine, White Willow Bark, etc.

Who is The Manufacturer of Fast Flex?

Fast Flex is manufactured by the well-known and generally trusted company GNC. The information available for Fast Flex on the official website is fairly limited, just covering the basics of the product, and outlining the ingredients used and what they do.


*All individuals are unique. Your results can and will vary.

How Does Fast Flex Work?

GNC has made Fast Flex easy to take, providing each dosage in single packets. Each active ingredient is contained in a separate capsule, meaning that 5 capsules are taken per serving, a number that might be off-putting to some consumers.

Fast Flex is a product that is used to ‘kick-start joint repair and health. It is recommended that this product is taken for approximately 8 weeks before switching to another GNC-manufactured product, Tri Flex (the company advises consulting with a doctor first).

Fast Flex Ingredients – Are they Safe & Effective?

Glucosamine and Chondroitin

– Fast Flex covers all areas of joint rejuvenation, including rebuilding and repairing existing damage using Chondroitin and Glucosamine. Both commonly-used, proven joint supplements, these substances boost each other’s joint-repairing ability and provide the ‘building blocks’ needed to strengthen the cartilage that covers and protects the end of bones.

A 2018 review of previous research found that treating knee or hip osteoarthritis with glucosamine and chondroitin led to small improvements in pain and physical function[1].

White Willow Bark

– In addition to this Fast Flex also uses White Willow Bark. This natural substance acts as a powerful anti-inflammatory to lubricate and provide ease of movement in the joint. According to the National Library Of Medicine, Salicin, a compound related to aspirin, can be found in the bark of white willow trees (acetylsalicylic acid). Salicin is assumed to be responsible for the herb’s pain-relieving and anti-inflammatory actions, together with the flavonoids, which are the herb’s potent anti-inflammatory plant chemicals[2].

MSM (Methylsulfonylmethane)

– According to the National Library Of Medicine, MSM is our bodies’ natural source of sulphur. MSM is a strong anti-oxidant agent besides supplying sulphur to the body. Sulphur on the other hand is responsible for creating strong connective tissue from keratin[3].


*All individuals are unique. Your results can and will vary.

Other ingredients are organic sulfur, and Omega-3-rich fish oil,

Pros and Cons of Fast Flex

Fast Flex Pros

  • Might improve joint health.
  • May improve joint mobility and flexibility.
  • Could provide relief from joint inflammation.
  • It contains all-natural ingredients.

Fast Flex Cons

  • The information for Fast Flex is limited.
  • The ingredient amounts are not listed.
  • There are several different capsules required per day.
  • No customer testimonials are provided.
  • No free samples or trial period is offered.
  • The product cannot be used by anyone with shellfish allergies.

Fast Flex FAQs

Q.Does Fast Flex causes any Possible Side Effects?

A.All the ingredients used in Fast Flex are deemed safe and should produce no ill side effects, although it must be noted that Glucosamine and Chondroitin, which in this product are sourced from shrimp, are not suitable for anyone with a shellfish allergy. While GNC states that the ingredient amounts are at full potency the actual ingredient list is not provided.

Q.Where to Buy Fast Flex?

A.Fast Flex is available for purchase on the official website as well as other online e-commerce sites like Amazon, and Walmart.

How We Researched & Rated

Here is our score, based on scientific evidence, of how likely Fast Flex will be effective for its claimed benefits:

  • Trusted pain relief*3.9/5
  • Strengthens the bones*3.6/5
  • Reduce joint inflammation*3.5/5
  • Encourage cartilage repair*3.8/5

We used the insights from our research and testing to assign a star rating from one to five (five being the best; one being the worst) to this product.

Fast Flex Customer Reviews

  • Fast Flex has limited utility. While it may reduce your pain for short time and give you steady energy for a few hours, it is not worthy enough. As a result of utilizing it, I have not observed any pain relief.~ Gabrial

Fast Flex Conclusion

Most people would choose this brand over another product containing similar ingredients, simply because GNC is a name they can trust and it doesn’t require long-term use. Although Fast Flex has several capsules per dosage, the Tri-Flex follow-up product is much simpler and more convenient to take.

Providing no allergies, Fast Flex provides a good, all-around joint treatment that includes all the necessary ingredients required by damaged, inflamed joints.

Although the product seems promising, it has very limited information available online. Why would anyone want to buy such an obscure product? There are several options available in the market. Go for a product that is manufactured by a credible company and has full-fledged information available online.

Bones are connected by joints, which allow us to move with ease. Joint damage can cause pain preventing you from doing the things you once loved. Many conditions lead to joint pain from aging to an untreated sports injury. A quality joint product may help repair existing tissue damage and also promote stronger joints, less susceptible to future degeneration.

Below you’ll find some of the most effective joint pain supplements on the market today, in our opinion.

Rating Table

Our Top Joint Pain Relief Products


Projoint Plus

Projoint Plus
Overall rating 4.9/5 Overall rating Read Full Review
  • Reduce Joint Pain & StiffnessReduce Joint Pain & Stiffness
  • Supports Cartilage HealthSupports Cartilage Health
  • Maximizes Comfort & FlexibilityMaximizes Comfort & Flexibility
  • Quality Natural IngredientsQuality Natural Ingredients


  • Support Flexible Joints
  • Supports Cartilage Health
  • Supports Natural Joint Mobility
  • Non-GMO, Vegan, & Gluten-free


  • It can only be purchased online
  • People with seafood allergies can’t use this product
Bottom Line

ProJoint Plus supplement is worth considering based on the available information, as it ensures joint mobility levels are improved and restored. The potent ProJoint formula includes powerful proven, quality ingredients in their optimal amounts, including the powerful, backed pairing of Glucosamine & Chondroitin, and there have never been any reports of harmful side effects from customers.

Check Price

Joint N-11

Joint N-11
Overall rating 4.8/5 Overall rating Read Full Review
  • Supports Joint FlexibilitySupports Joint Flexibility
  • Strengthens Joint MobilityStrengthens Joint Mobility
  • Doctor FormulatedDoctor Formulated
  • Purely Natural IngredientsPurely Natural Ingredients


  • Relieve Pain and Aches
  • Support Joint Health
  • Improve Joint Stiffness
  • Improve Muscle Strength


  • Only available online.
  • May react with other medications.
Bottom Line

Joint N-11 is an all-natural dietary formula that works to alleviate pain and inflammation. This cutting-edge formula delivers pure Niacinamide, which is clinically shown to help protect joint tissue.

Check Price

1MD MoveMD

1MD MoveMD
Overall rating 4.7/5 Overall rating Read Full Review
  • Promotes Joint MobilityPromotes Joint Mobility
  • Promotes Joint FlexibilityPromotes Joint Flexibility
  • Aids Proper Joint FunctionAids Proper Joint Function
  • Lab-Tested IngredientsLab-Tested Ingredients


  • Doctor Formulated
  • Supports Joint Comfort
  • Ability To Lubricate Joints
  • Ease Joint Discomfort


  • Only available online.
Bottom Line

1MD MoveMD delivers clinically studied ingredients in one revolutionary joint health solution to help reduce joint discomfort in as few as 7 to 14 days. It uses lab-tested and proven ingredients and is suitable for both genders of all ages.

Check Price

Read All Fast Flex Customer Reviews

Fast Flex Reviews: Does It Really Work for Pain Relief?
3.8 / 5.0
Fast Flex Reviewer Rating
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Write a Review
Fast Flex Reviews: Does It Really Work for Pain Relief?
  1. Krystin D.

    Taste is so bad
    The first pack was great and it really works, but the second one had a larger, yellow pill that had a rotten taste to it. I wrote the company and they said they were concerned, but didn’t refund my money or even get back to me. Don’t buy this product. I can’t bear to swallow it because the taste is so bad.
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**This is a subjective assessment based on the strength of the available informations and our estimation of efficacy.

*Result may vary. If you are pregnant, nursing, have a serious medical condition, or have a history of heart conditions we suggest consulting with a physician before using any supplement. The information contained in this website is provided for general informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease and should not be relied upon as a medical advice. Always consult your doctor before using any supplements.

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