As seen in

Skip to product information
1 of 3


Duoflexin strong bones and joints, Collagen Complex, 200g powder

Duoflexin strong bones and joints, Collagen Complex, 200g powder

⭐⭐⭐⭐⭐ (231)

Duoflexin contains two types of fish collagen - type I collagen Collyss™ naturally present in tendons and bones and CARTIDYSS™ collagen complex containing type II collagen - naturally present in joint cartilage, as well as natural chondroitin and glucosamine.

"I work as a Certified Functional Medicine Practitioner and recommend Aliness products to my patients"
Katarzyna, Kent, UK, Rated 5 stars.
  • ✓ Highest quality supplements manufactured to top EU standards
  • ✓ Free from traces of allergens
Gluten Free Lactose Free GMO Free Soy Free
Regular price £22.49
Regular price £22.49 Sale price £17.99
Save £4.49 in Today's Sale!
£4.49 Coupon applied! Sold out
Tax included.

In UK stock, Next Day Delivery Available

  • Same day dispatch from the UK Warehouse (up to 1pm Mon-Fri). Now also shipping to the EU and North America.
  • No quibble 90 day FREE returns
  • UK's largest stock of Aliness products in our Oxfordshire warehouse. We deliver the products faster than anybody else in the UK. Buy with confidence that you won't pay any duty or extra import tax.
Our Guarantee

The mission of Aliness is to bring amazing, pharmaceutical quality food supplements at a price that won’t break the bank.
If you're not 100% happy use our 90 day no quibbles FREE return guarantee.  

Trusted online since 2016, over 20,000 orders shipped.

View full details

Join Our 25,000 Happy Customers

Rated Excellent 4.8/5 on TrustPilot.


"I love Aliness products. Very high quality. I'm working as a personal trainer and when I write diet and supplementation plans for my clients, I base them on Aliness supplements. I know it works, as I have blood tests results. Top quality. Thank you. "

- Agata


  • Duoflexin® powder 200g
  • Strong joints and bones
  • 140 servings

Synergistic action of 100% natural ingredients for professional joint protection.

The product includes, among others 6 patented ingredients, incl. collagen of European origin type I and type II

Number of portions (measures): 140


1 scoop

2 scoops

Abyss FISH Collagen, including:

500 mg

1000 mg

Cartidyss™ collagen complex, including:

250 mg

500 mg

type II collagen

155 mg

310 mg

chondroitin sulfate

67.5 mg

135 mg

glucosamine sulfate

12 mg

24 mg

hyaluronic acid

10 mg

20 mg

Type I Collagen Collyss™

250 mg

500 mg

Boswellia serrata BosFlex® extract

50 mg

100 mg

FlexiGo™ Devil's Claw Extract

50 mg

100 mg

GingerPro® ginger extract



Acerola extract

25 mg

50 mg

of which: Vitamin C

6.3 mg (7.9% *)

12.6 mg (15.8% *)

Low molecular weight hyaluronic acid

20 mg

40 mg

Nutrelix® snail slime extract



* NRV: daily reference intake value

Ingredients: Cartidyss ™ (FISH cartilage collagen complex: hydrolyzed collagen type II, chondroitin sulfate, glucosamine sulfate and hyaluronic acid), Collyss ™ (hydrolyzed fish collagen type I), Fibregum ™ acacia fiber, Boswellia serrata extract (70% of boswellia serrata acids) ) BosFlex®, devil's claw extract (DER 4: 1) FlexiGo ™, ginger ginger extract (5% gingerols) GingerPro®, acerola extract (25% vitamin C), low molecular weight hyaluronic acid, Nutrelix® snail mucus extract.

Recommended daily intake required to obtain a beneficial effect of the product: 1 level scoop, once or twice a day. Do not exceed recommended servings for consumption during the day.

Preparation method: dissolve 1 scoop of the product in 100 ml of water.

The product cannot be used as a substitute for a varied diet.

It is recommended to follow a balanced diet and a healthy lifestyle.

Net weight: 200 g

Storage conditions: Store at room temperature out of reach of small children. Protect against moisture.

Duoflexin® has two types of fish collagen - type I collagen Collyss ™ naturally present in tendons and bones and CARTIDYSS ™ collagen complex containing type II collagen - naturally present in joint cartilage, as well as natural chondroitin and glucosamine, strengthened with an additional portion low molecular weight hyaluronic acid with high bioavailability and proteins from snail mucus. In addition, the composition was enriched with synergistic ingredients:

Natural vitamin C from acerola - helps in the proper synthesis of collagen to ensure the proper functioning of cartilage and bone

Extracts of Indian frankincense (Boswellia serrata), devil's claw (Harpagophytum procumbens) and ginger (Zingiber officinale) - help maintain healthy joints and maintain their flexibility and mobility

Duo flexin

“The strong point of Aliness products is the best quality raw materials, which is why it is a market leader in many product lines.”

Elle Magazine, December 2022