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Our Promise
60-day Money-Back Guarantee
Made in the UK
Non-GMO & Pesticide-free
No artificial flavours
Pescatarian Friendly
Naturally Dairy-Free
Wholesome ingredients with real benefits. Our Collagen Complex with Hyaluronic Acid and Sea Kelp contains a superblend of ingredients that nourish your body from the inside. Our collagen formula effectively helps to promote healthy skin, hair & nails, support metabolism, promote cartilage, bone and muscle health, and more.
Supports Skin Health
Supports Skin Health Our Collagen Complex supports the maintenance of healthy skin by contributing to the normal formation of collagen.
Supports Psychological Function
Supports Psychological Function Our Collagen Complex contains ingredients that promote normal psychological functioning and helps to reduce feelings of tiredness and fatigue.
Promotes Immune Health
Promotes Immune Health Our product supports optimal immune function. Your immune system protects your body against dangerous pathogens.
Product Benefits Main Image
Contains Amino Acids
Contains Amino Acids Our Collagen Complex contains high amounts of amino acids. Amino acids are the building blocks of all proteins, including the most abundant fibrous proteins in the skin, as keratins, collagen and elastin.
Supports an energy-yielding metabolism
Supports an energy-yielding metabolism Our Collagen Complex contributes to a energy-yielding metabolism, which allows our body to optimally function.
Maintains healthy bones, cartilage and muscles
Maintains healthy bones, cartilage and muscles Strengthens bones and cartilage by stimulating collagen production.
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Ingredients

The Ingredients in our Collagen Complex

This multi-action formula features a powerful blend of clinically-studied ingredients related to joint health, bones, muscles, immune system & more.

Hydrolysed Marine Collagen
Hydrolysed Marine Collagen 1000mg

Collagen is a protein that is one of the main building blocks of our body's connective tissues, including skin, bones, muscles, tendons and muscles. Collagen makes up nearly 3/4 of our skin and helps to maintain its elasticity.

Zinc
Zinc 2mg

Zinc contributes to the maintenance of nails, skin, hair and cognitive function. It also helps to protect your body from oxidative stress.

Hyaluronic Acid
Hyaluronic Acid 20mg

Hyaluronic Acid is naturally occuring substance that is distributed in the body's connective tissues. Hyaluronic Acid is an important molecule for skin hydration and lubrication of the joints.

Sea Kelp Extract
Sea Kelp Extract 66ug

Sea Kelp is quickly becoming one of the most popular natural ingredients in skincare and wellness products. It provides the body with a natural source of minerals, including iodine.

Biotin
Biotin 1800ug

Biotin promotes skin and hair health. This helps to nourish and support your hair and skin.

Vitamin E
Vitamin E 10mg a-TE

Vitamin E contributes to the protection of cells from oxidative stress, and protects DNA, proteins and lipids from oxidative damage.

Vitamin C
Vitamin C 40mg

Vitamin C helps nourish skin and protect skin cells from oxidative stress. Vitamin C stimulates collagen production, which is a major component of the skin.

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Why marine collagen?

Our Collagen Complex is made with marine collagen peptides (hydrolysed type 1 collagen), which is the most environmentally-friendly type of collagen available. Type 1 collagen is found in our skin, hair, nails, ligaments, teeth and bones, and it is the most abundant type of collagen in the body.

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Optimal absorption

Our collagen formula contains highly bioavailable hydrolysed marine collagen. The process of hydrolysis requires breaking down the proteins in order to support optimal absorption into the bloodstream, allowing you to fully reap the benefits of our collagen formula.

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HMPC Capsule

We use a HMPC (hypromellose) capsule shell for our products, so they contain 0% gelatine. Our collagen complex does however contain marine collagen, so although suitable for pescitarians it is unsuitable for vegans/vegetarians.

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Testimonials Here’s what our customers have to say Over 2513 Satisfied Customers with 5-star reviews. 5 Star Reviews
My skin looks amazing
Ratings

“I’ve tried lots of different collagen products in the past to try and keep my skin nice and reducing damage to it. Nothing has worked as well as the collagen complex! My skin looks healthy and so hydrated. Very satisfied and highly recommend.”

- Carol T

Verified Customer
Really happy I found this
Ratings

“Great product and service. Really happy I found this collagen product. It’s the first I have tried and it’s showing me amazing results.”

- D. R.

Verified Customer
This is the only thing that has worked for me
Ratings

“The Collagen complex is a great collagen product. It has helped me a lot with my hair and skin. My hormonal acne was persistent and I tried it all. This is the only thing that has worked for me.”

- Ann Levy

Verified Customer
I bought more!
Ratings

“Very happy about this collagen. I never thought this would work as well as it does and now I got my sister on it too!”

- Erica

Verified Customer
Loved it so bought your other products too
Ratings

“I have bought both, the collagen, probiotic and I find these to be high quality and honest products.”

- A. Markina

Verified Customer
Pleased!!!
Ratings

“Could not be more pleased with my purchase. I’m convinced that this has helped my skin look more firm and awake.”

- Chloe Bower

Verified Customer
Second purchase
Ratings

“I bought a bottle of collagen complex a month ago and just reordered today. I bought 6 bottles this time so I dont run out.”

- T. A

Verified Customer
Great results
Ratings

“I’m still in early days taking Theonia Collagen, but so far I’m loving the results. My skin is feeling softer and I’m getting less spots on my jaw.”

- Sharlene Riorda

Verified Customer
Amazing hair growth!!!
Ratings

“If you’re hesitating to buy the Collagen Complex, don’t… This is a product that actually WORKS. I started noticing my hair growing faster and now I’ve been on it 3 months. My hair has grown almost 4 inches in 3 months, and my hair doesn’t usually grow fast. It is well worth the money.”

- Tina Fineman

Verified Customer
Wife loves it
Ratings

“Bought a few bottles of this for my wife two months ago. She loves it and says it works very well for her”

- Pete Trobbs

Verified Customer
Gold badge with text stating ‘100% Money Back Guarantee – 60 Days’ in bold lettering.

Order Risk-Free now

"We’re confident you will love your results using our Collagen Complex, which is why we’re pleased to offer a RISK-FREE 60-day money-back guarantee on all orders.

If you aren’t 100% satisfied with your results, we will give you a 100% hassle-free refund, no questions asked."

Handwritten-style signature reading ‘Jake A.’

Founder at Theonia

Two bottles of Theonia Collagen Complex food supplement with hyaluronic acid and sea kelp, each containing 60 capsules CHOOSE YOUR BUNDLE

Frequently Asked Questions

If you can’t find the answer below, please don’t hesitate to Contact Us.

HOW SHOULD I TAKE IT, AND WHO IS IT FOR? CAN I TAKE IT LONG TERM?
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  1. Adults should take two (2) capsules daily with water, ideally with food, or as directed by a healthcare provider. Do not exceed the recommended daily dose.
  2. This supplement is intended for adults aged 18+. Not recommended for children under 10. Consult your doctor before use.
  3. Collagen Complex is formulated for regular use as part of your daily nutrient intake. As with all food supplements, it should be used alongside a balanced diet and a healthy lifestyle.

IS IT SUITABLE FOR EVERYONE?
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  1. Yes. This formula is suitable for both men and women. However, it is not suitable for vegans or vegetarians, as it contains marine collagen. It is suitable for pescatarians.
  2. Allergens: Contains fish. Free from gluten, dairy, soy, and artificial additives. Each batch is allergen-tested to ensure it contains no shellfish, molluscs, or crustaceans.

Manufacturing: Produced in the EU under GMP-compliant conditions.

WHAT MAKES THIS FORMULA UNIQUE?
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Theonia Collagen Complex provides:
1000 mg Hydrolysed Marine Collagen (Type 1)
40 mg Vitamin C (50% NRV)
10 mg Vitamin E (83% NRV)
1800 µg Biotin (3600% NRV)
2 mg Zinc (20% NRV)
66 µg Iodine from Marine Kelp (44% NRV)
20 mg Hyaluronic Acid
Type 1 collagen is the most abundant collagen in the human body, found in skin, hair, nails, bones, and connective tissue. Hydrolysed marine collagen is broken down into smaller peptides for solubility.

WHAT RESULTS CAN I EXPECT?
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  1. Collagen production naturally begins to decline in our mid-to-late twenties. Many adults choose to supplement at this stage to maintain their overall nutrient intake, including nutrients that contribute to normal skin and connective tissue function.
  2. Nutrient effects are typically experienced over time with consistent daily use, as part of a balanced diet and healthy lifestyle. Individual experiences may vary.

ARE THERE ANY POSSIBLE SIDE EFFECTS OR INTERACTIONS?
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  1. Collagen is generally well-tolerated. In rare cases, especially if taken without food or in excessive amounts, mild digestive discomfort may occur. 
  2. This product contains fish and is not suitable for individuals with a fish allergy. Avoid use if taking anticoagulants or if you have a thyroid condition without medical supervision, due to the presence of iodine from kelp. 
  3. Consult your healthcare provider before use—especially if you are pregnant, breastfeeding, taking medication or other supplements, have a medical condition, are due for surgery, have any sensitivities, questions, or concerns.
  4. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

HOW SHOULD I STORE THIS SUPPLEMENT?
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Store in a cool, dry place away from sunlight and moisture. Reseal the bottle tightly after each use.

WHAT IS YOUR RETURN POLICY?
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We offer a 60-day money-back guarantee. If you're not fully satisfied, contact our support team for return instructions. Orders are shipped from our warehouse within one working day. Delivery times vary by region.

Don't just take our word for it...

Thousands of people love this product - Find out why!

Crystal P.
“Oh my goodness, Collagen Complex is a game changer! My hair feels stronger, my skin looks clearer, and my nails are tougher too. The formula is genuinely nutrient-dense, and it fits into my daily routine as an effortless way to support my hair, skin, and nails.”
Crystal P.
Angela L.
“As a busy mom, I love how this complex supports my whole body. My joints feel more flexible, and I notice less stiffness after chasing the kids around all day. I appreciate the clean ingredients list & is a simple daily boost for my joints and whole body.”
Angela L.

The Powerful All-in-One Solution for Beautiful Skin, Hair & Nails

Experience the Benefits of Our Collagen Complex

Our Collagen Complex with Hyaluronic Acid and Sea Kelp contains a super blend of ingredients that nourish your body from the inside. We’ve included effective ingredients that contribute to healthy skin, hair & nails, support metabolism, promote cartilage, bone, and muscle health, and more.

Get Yours Now

"I’ve been really enjoying Theonia Collagen Complex. I’ve tried a few similar products, and many left a odd aftertaste or didn’t deliver results. This one work fast and feels effective. I’d happily recommend it to anyone looking to boost their health from the inside out!!!!!”

Jennifer F.
Get Your Collagen Complex Today! It's zero-risk with our 60 day satisfaction guarantee. Order Now