Flex+ pairs two of the most clinically studied joint actives in the world, AprèsFlex® and Univestin®, in a dual-capsule built for absorption, so you can move with comfort again.
The Kollo Difference
Most joint supplements hide a low dose of cheap, commodity ingredients behind a big promise. Flex+ does the opposite. Two of the most clinically studied joint actives in the world, at levels that matter, in a dual-capsule format built for absorption, so you can feel the difference in how you move.
Whether you are chasing a personal best or just want to move through the day in comfort, Flex+ is built to support active joints.
High-impact training that asks a lot of knees, hips and ankles.
Rounds that depend on a comfortable, mobile swing.
Stop-start, twist-and-turn demands that load the joints.
Busy, active people who want to keep moving comfortably through a full day.
Keeping everyday movement easy as the years add up.
Flex+ is built around two of the most clinically studied joint actives in the world, chosen because they do different jobs. One works fast, one builds over time, so you get comfort you can feel early and support that keeps going.
The long-game active. In repeated human trials, AprèsFlex® has been studied for joint comfort and physical function that build steadily over weeks and months, with cartilage support measured as far out as six months.^
The fast mover. Univestin® has been studied for noticeable joint comfort and flexibility within the first days of use, working across several of the body's natural pathways at once rather than just one.^
Inside Every Capsule
Flex+ combines two clinically studied joint actives, Univestin® and AprèsFlex®, with black seed oil and bone-supporting vitamins D3 and K2. A precision dual-capsule formula, free from unnecessary fillers.
AprèsFlex® is a premium Boswellia serrata extract, standardised for AKBA (Acetyl-11-Keto-β-Boswellic Acid), one of the plant's key active compounds. In Flex+ it forms the sustained backbone of the formula, in a form selected for absorption.
Benefits
Univestin® is a patented botanical blend of Acacia catechu and Chinese Skullcap, standardised for its naturally occurring flavonoids. In Flex+ it adds the fast-acting layer of joint-comfort support, working alongside AprèsFlex®.
Benefits
![Black Seed Oil [Nigella Sativa]](http://kollohealth.com/cdn/shop/files/Black_seed_oil._{width}x.png?v=1781954129)
Black seed oil has been valued for centuries and is naturally rich in thymoquinone, a potent antioxidant compound. In Flex+ it complements the joint actives, adding everyday antioxidant support as part of a balanced routine.
Benefits
Vitamin D3 contributes to the maintenance of normal bones and to normal muscle function, making it a natural partner to the joint actives in Flex+. It also supports the normal function of the immune system, helping you stay active all year round.
Benefits
Vitamin K2 works hand in hand with Vitamin D3 and contributes to the maintenance of normal bones. Together they round out the Flex+ formula, supporting the strong, healthy foundation your joints depend on.
Benefits
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What to expect
Reported timeline based on the clinical research behind the active ingredients in Flex+. Individual results vary.
Based on published studies of the active ingredients at their studied dose. Not a treatment claim. Individual results vary.
In gold-standard clinical trials of the AprèsFlex® extract, participants saw meaningful changes from Day 1 to Day 180.^
Studied for better physical function, including stairs and walking, by 6 months.^
Studied for significantly less stiffness by Day 15, improving to 6 months.^
Studied for improved comfort from Day 5, building over 6 months.^
^ Based on published clinical studies of the AprèsFlex® (Boswellia serrata) extract at its studied dose. Individual results vary.
The Kollo Standard
What Flex+ Supports
Two clinically studied actives, Univestin® and AprèsFlex®, chosen to support joint comfort day to day.
Formulated to support flexibility and mobility, so you can stay active and move with ease.
Our dual-capsule format delivers the actives in their optimal form, with no cheap fillers or cut corners.
With vitamins D3 and K2, which contribute to the maintenance of normal bones, plus D3 for normal muscle and immune function.
See how the clinically studied actives in Flex+ compare with other popular joint ingredients.
| Flex+ Dual-Capsule | Turmeric | Glucosamine | Chondroitin | |
|---|---|---|---|---|
| Two clinically studied actives | ✓ | ✕ | ✕ | ✕ |
| Studied for fast comfort (days) | ✓ | ✕ | ✕ | ✕ |
| Multi-channel support | ✓ | ✕ | ✕ | ✕ |
| Full dose, never diluted | ✓ | ★★★ | ★★ | ★ |
| Convenient once-a-day routine | ✓ | ✕ | ✕ | ✕ |
Loved By Thousands
Joints
Finally something that actually works
I cycle about 100 miles a week and my knees have been paying the price. I'd tried glucosamine and a couple of other supplements but nothing really made a difference. Flex+ is the first thing that's genuinely helped – took about 10 days but now my knees feel so much more comfortable on longer rides. I can actually get through a Sunday ride without hobbling around for the rest of the day. Wish I'd found these sooner.
Joints
Goodbye sore knees
I’m a keen extreme sports girl, but god, it hurts as you get older. I found these on kolllo when buying collagen and after two weeks I feel 100% less achey.
Joints
Game changer for my morning stiffness
I'm 52 and have been dealing with stiff fingers and wrists for about two years now. Mornings were honestly miserable – it would take me half an hour just to feel like I could grip a cup of tea properly. Started taking Flex+ about three weeks ago and the difference is genuinely noticeable. My hands don't feel as locked up when I wake up, and I'm back to doing things like opening jars without wincing. Really pleased with these.
Brilliant product.
Better than glucosamine
Yoga feels easier again
I teach yoga five days a week, and my own joints have been struggling for the past year or so – particularly my knees and ankles. I was starting to worry I'd have to cut back on classes. Tried Flex+ on a whim and within about six days, I felt a real shift. My joints feel less inflamed, and I'm able to move through poses without that grinding sensation. It's made such a difference to my practice and my teaching. So glad I gave these a go.
Everything You Need To Know
Most people start to notice easier, more comfortable movement within 5-7 days of use. Joint actives work best taken consistently, so we recommend giving Flex+ a full 8 to 12 weeks as part of your daily routine.
Flex+ pairs two clinically studied joint actives, Univestin® and AprèsFlex®, with black seed oil and bone-supporting vitamins D3 and K2. It is delivered in a precision dual-capsule format and made in the UK to high manufacturing standards.
The dual-capsule technology lets us pair the right actives together in their optimal form, delivering a targeted daily dose for joint comfort and mobility in a way a single capsule cannot.
Take the recommended daily capsules at whatever time suits your routine, morning or evening. They can be taken with or without food.
Flex+ is suitable for both men and women. Please check the full ingredient list on the pack if you have any known allergies, and see the label for suitability for your dietary needs.
If you are pregnant, breastfeeding, taking medication or managing a health condition, we always recommend checking with your GP or healthcare professional before starting any new supplement.
Flex+ is made in the EU to high manufacturing standards, so you can trust exactly what is in each capsule.
Yes. Subscribe and save on every delivery, choose how often it arrives, and pause, skip or cancel anytime from your account. There is no long-term commitment.
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