Performance Lab Flex Review – Flexibility enhancer plus joint relief & renewal

Performance Lab Flex

Performance Lab Flex




  • Impressive ingredients
  • Optimal dosages
  • Joint support
  • Fast absorbing
  • No proprietary blends
  • Clean, non-GMO ingredients
  • Vegetarian & vegan friendly


  • None

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Performance Lab Flex Review

Performance Lab Flex Review
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Part of the downside of hitting the gym hard is all the aches and pains that come with exerting yourself. Because of this, we’ve been waiting for a product that makes the promises you’ll hear in our Performance Lab Flex Review today.

With those intense movements that come with heavy lifting, it is a good idea to lubricate your joints and try and get a level of shock absorption in your body. These are some of the attributes this product claims to have.

Although you don’t find a lot of companies making quality joint supplements tailored towards athletes, this has all the hallmarks of a quality product. 

Because we have reviewed a variety of Performance Labs other supplements we already know what they stand for. So, we’re expecting another clean product for a start.

Still, it has to offer more than safety and a high standard of ingredients, this joint supplement still needs to be effective. To impress, it must give us the following:

  • Reduce inflammation
  • Lubricate joints and enhance flexibility
  • Reduce swelling and pain
  • Contain quality ingredients

Get this right and we will be recommending this to athletes and anyone on the comeback from injury. Because we all feel the aches that come with exerting yourself to the max this would make a welcomed addition to your fitness routine. If it works. First of all, let’s take a look at the company behind the product. 

Who Makes Performance Lab Flex?

Opti-Nutra - Advanced Nutraceuticals manufacturer of Performance Lab supplements and Mind Lab Pro nootropic

Based in the UK, this is the brand behind the Performance Lab range. 

Having reviewed a wide range of their products we are yet to find any that we wouldn’t recommend. It all starts with their approach to cleaning up their ingredients. Using their NutriGenesis technology they ensure that each ingredient is eco-friendly, clean, safe, potent, and allergen-free.

There are also no banned substances in sight, not is there any gluten or soy. This product is also vegan-friendly, as are their others. 

Even their capsules are vegan-friendly. Using the branded NutriCaps version, they are fine for vegans to consume and are also rapidly absorbed. Also, these are often regarded as a premium form of a capsule.

Their products come with a money-back guarantee as this means your purchase is risk-free. This is what we like to see when trying a new product or brand as you don’t know how your body is going to react to the formula.

The Performance Lab brand makes a wide range of supplements and other health products. We’ve reviewed everything from their testosterone booster to their sleep-enhancing supplement.

Performance Lab Flex Ingredients Review

Performance Lab Flex review of ingredients

This is where we get to see if the fuss around this joint support supplement is justified. First of all, we like that there are no proprietary blends.

This means we get to take a look at all the ingredients and dosages with nothing hidden. Also, their NutriGenesis technology has made some of the ingredients more potent and cleaner so it is off to a good start.

The formula is relatively simple and certainly free of any rubbish so let’s see what it has for us.


This is a branded version labelled CurcurWIN turmeric and is a root spice commonly found in Asian food.

There are plenty of health benefits that come from getting it into your diet, but how has it earned its place in this supplement?

Numerous studies have shown Turmeric’s effectiveness at reducing inflammation and helping those suffering from joint pain. This, in turn, makes you more flexible which is exactly the sort of trait we are looking for.

Using antioxidant activity, Turmeric helps to fight against free radicals from worsening joint pain and even deterioration. 

Because of the version of Turmeric they have used, it is 46% more absorbent than other types and has 20% curcuminoids which are the equivalent of fresh Turmeric. 

At 250 mg you are getting an optimal dosage of what is an impressive form of an excellent ingredient. 

Boswellia Serrata

Derived from a desert tree and in the form of a gum, this ingredient is another that is here on merit. 

It contains boswellic acids that are great for joint health and is an ingredient you often see in this type of product. 

By inhibiting the function of enzyme-5-lipoxygenase it stops it from slowly breaking cartilage down. Boswellia Serrata has also been found to protect and soothe joints by modulating immune responses. advises that it appears to have preliminary evidence for anti-inflammatory joint disorders which is also encouraging. 

As with any reputable supplement in this niche, there is a good dosage in the 100 mg. Again, using their advanced nutritional technology, they have made it 52% more absorbent than regular Boswellia which arguably makes it the most impressive ingredient in the Performance Lab Flex review.


Another impressive ingredient for healthy joints and one that can help with flexibility. 

This amino sugar is found in your cartilage, tendons, ligaments, and other tissues surrounding and cushioning your joints. 

It works because it helps support the building blocks that make connective tissues. It also repairs and regenerates cartilage so anyone recovering from an injury or just feeling their joints creaking between sessions will do well to get this ingredient into their system.

Glucosamine also lubricates joint fluids to ensure you get a wide range of motion. Anyone who doesn’t get enough glucosamine in their body will soon notice. 

A common source in supplements is shellfish but because they like to ensure that their products are well tolerated by a wide range of people, they have sourced their glucosamine from corn. 

The 500 mg is another optimal dosage, giving you more than most.

Mythocondro Chondroitin Sulfate 

You might not know that your cartilages can lose hydration so to make sure they have an optimal amount and are well lubricated, Performance Lab Flex contains Mythocondro.

This is what holds water in your cartilage so they can do their job of being shock absorbent. Mythocondro also helps your body to produce more collagen which is vital for healthy joints.

If you do any form of cardio then this is going to be beneficial, especially the CrossFit range of movements.

Performance Lab Flex contains the only vegan-friendly type of chondroitin and has made it 43% more bioavailable. The animal sources are far more common so it is good to see an alternative here.


This is a useful addition since it is complementary to glucosamine, collagen, and chondroitin by aiding their formation.

It also works to slow the breakdown of cartilage and provides another layer of protection. We like that this branded version is made in the USA and is the purest form of methylsulfonylmethane (MSM) available.


Using their NutriGenesis technology, Performance Lab has included this as a more potent and cleaner version of a proven ingredient.

We’re surprised it isn’t found in joint supplements more often as it is great for the cells that grow bone tissue. It also helps to protect bone tissue from breaking down. These are additional benefits for your mobility that other products fail to provide.

How To Take Performance Lab Flex

According to the label, you should take two capsules of Performance Lab Flex a day. 

If you feel the need, then take the two capsules directly after exercise to ease any discomfort. To get the best possible results, take this product regularly and consistently.

There is also the 30-day performance promise to consider. This means if you are considering asking for a refund you have to try it for 30-days to give it the best possible chance of working before getting your money back.

Performance Lab Flex Side Effects

The good news is that there is nothing in Performance Lab Flex that should cause any side effects. The ingredients are all high-quality, with no stimulants to worry about.

They branded versions of each ingredient ensure they are clean yet potent but the dosages are all optimal. We like that they haven’t tried to bulk out the formula. Instead, what you see is what you get which leaves you with a product that should be well tolerated and give you excellent support for your joints.

Because it is non-GMO, gluten-free, vegan-friendly, soy-free, with no banned substances or allergens, it impresses more than your ordinary supplement brand.

Performance Lab Flex Pros and Cons


✅ Impressive ingredients

✅ Optimal dosages

✅ Fast absorbing

✅ No proprietary blends

✅ Clean, non-GMO ingredients

✅ 30-day satisfaction guarantee

✅ Vegetarian & vegan friendly


❌ None

Performance Lab Flex Review Conclusion

Performance Lab Flex review
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With a long list of enhanced ingredients, some you expect to see on joint supplements a bit with some welcomed surprises too, there is a lot to like about this product.

Performance Lab doesn’t seem to do things the normal way, which is good news for their customers. Because they clean up their ingredients, they are more potent but are also safer. 

This product would be well suited to anyone who puts a lot of strain on their joints as a lot of people don’t realize it, but the heavy weights and motions like squats can take their toll on cartilage and joints over time. 

If you feel aches and pains the day after you exert yourself, it can make work and your leisure time a chore. This is why we like this product, it has benefits to your daily life. All the nutrients have been included on merit so without filler, you don’t have to worry about the impact of synthetic ingredients or banned substances.

Not only are the ingredients of high-quality, but they are fast-absorbing. Also, they are long-lasting so you can enjoy the benefits of flexible motions.

The clean vegan-friendly formula means it can be enjoyed by anyone. Thankfully, it is designed for daily use, so you can enjoy the effects of the proven ingredients all year round.

It’s another excellent supplement from Performance Lab that we can highly recommend.

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Is Performance Lab Flex Safe To Use?

Yes. Because the ingredients have been carefully selected and there are no dosages that are of concern, it is fine to use. The ingredients have even been enhanced to make sure they are clean and safer.

Where Can I Buy Performance Lab Flex?

The only place to buy any Performance Lab products is through their website.

Buying from the manufacturer ensures you are getting a genuine product with the best customer support.

Does Performance Lab Flex Have A Money Back Guarantee?

Yes, it does. As with most Performance Lab products, Performance Lab Flex comes with a 30-day performance promise. This means you have to give it 30-days to ensure it has the best chance of working.

After this time, if you aren’t getting the results you desire, you can get your money back.

Who Should Use Performance Lab Flex?

Several people would benefit from using this joint supplement. Notably anyone with aches and pains in their joints and the over 55’s.

This demographic would enjoy the enhanced mobility that comes as a result of consuming the carefully selected ingredients.

Performance Lab Flex is well suited to anyone who trains a lot and puts a strain on their joints such as strength training and even endurance activities.

Performance Lab Flex would also be useful to anyone who types a lot in their line of work. The connective tissue in your fingers and wrists will thank you for it.

Are There Any Deals With Performance Lab Flex?

Although it is already good value for money anyway considering the standard of ingredients, there are also offers when buying in bulk

Buy 3 bottles to get 1 free!

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