"I enjoy adding Collagen 4+ to my coffee every morning instead of creamer. Not only does it help me meet my protein goals for the day, but my joint pain has decreased and overall I feel better!"
– Eileen F.

Verified buyer

Collagen 4+

Name: Collagen 4+
Brand: Uni Key Health Systems, Inc
SKU: 9000
Price: 52.95 USD
Availability: InStock

enhanced with 4 cofactors for better absorption

Support your body from the inside out—Collagen 4+ combines hydrolyzed collagen peptides with four powerful cofactors to help boost your body's natural collagen production!

• REBUILD, RESTORE, REVITALIZE – Gives your body the raw materials it needs to strengthen joints, bones, skin, hair, and digestion at the deepest level.

• FULL-BODY SUPPORT – This cutting-edge formula replenishes lost collagen, helping you move, look, and feel like the best version of yourself.

• NOT YOUR AVERAGE COLLAGEN – Unlike other collagen powders on the market, Collagen 4+ is fortified with four essential cofactors––AstraGin®, Vitamin C, Hyaluronic Acid, and L-Tryptophan––that supercharge absorption and make this collagen a complete protein.

Quantity

Highlights

Collagen 4+ is a next-level collagen supplement that goes beyond basic support for skin, hair, nails, and joints. Each scoop delivers 12 grams of hydrolyzed bovine collagen peptides sourced from grass-fed cows in the USA, providing the most abundant types in your body—Type I and Type III collagen. These key proteins are essential for maintaining youthful, resilient skin, strong joints, and healthy hair.

What sets Collagen 4+ apart is its advanced formula for maximum results. Added L-Tryptophan transforms this collagen into a complete protein, while AstraGin® enhances absorption to ensure your body gets the nutrients it needs. Vitamin C and Hyaluronic Acid work synergistically to boost collagen synthesis, support hydration, and promote overall tissue health. Whether stirred into coffee, smoothies, or your favorite recipes, Collagen 4+ is designed to help you get the most out of every scoop!

How to Use

Mix one (1) scoop in 8 ounces of water or your favorite beverage. Dissolves easily in both hot or cold liquids, making it a great addition to coffee, juice, smoothies, yogurt, pudding, soups, and more.

For optimal results, use one (1) scoop twice a day for 30 days, then one (1) scoop daily thereafter for maintenance. Consistency is key to experiencing the full benefits of collagen supplementation!

Product Facts

Form: Powder

Serving Size: 1 scoop

Number of Servings: 30

Contains No: dairy, grain, gluten, soy, hormones, chemicals, GMOs, or pesticides.

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Unlock the Full Potential of Collagen

Stronger Joints & Bones
Supports flexibility, mobility, and bone strength by replenishing the collagen essential for joint cushioning and bone integrity.

Gut & Digestive Support
Promotes a resilient gut lining and smoother digestion by nourishing intestinal tissue and supporting microbiome balance.

Radiant Skin, Hair & Nails
Boosts skin elasticity, smooths fine lines, and strengthens hair and nails, giving you a visibly youthful, healthy glow.

Erases Wear & Tear
Formulated with four powerful cofactors that enhance collagen synthesis, ensuring optimal absorption and utilization for real, lasting benefits.

Real Collagen. Real Absorption. Real Results.

Most collagen supplements fail for one reason: poor absorption. You can take all the collagen you want, but if your body can't digest and use it, you won't see a difference. That's why Collagen 4+ was engineered from the ground up with absorption as the priority—not an afterthought.

This formula combines grass-fed Type I & III bovine collagen peptides with four science-backed cofactors to amplify absorption, stimulate collagen synthesis, and repair tissue where you need it most—skin, joints, bones, gut, and more. Whether you're recovering from wear and tear or simply want to glow from the inside out, Collagen 4+ can help you restore and rebuild naturally.

Key Ingredients
Full List of Ingredients
Supplement Facts

Hydrolyzed Bovine Collagen Peptides

Sourced from grass-fed cows in the USA, these peptides are rich in Type I and Type III collagen—the most abundant types in your body, essential for youthful skin, strong joints, and healthy hair.

L-Tryptophan

Supplies the "missing" essential amino acid that makes collagen a complete protein. The body also uses tryptophan to produce serotonin and melatonin, which help regulate mood, sleep, and appetite.

AstraGin®

A plant-based powerhouse that increases amino acid absorption by up to 67%, maximizing your body’s ability to repair and rebuild tissue.

Hyaluronic Acid

A moisture-binding matrix that hydrates skin, lubricates joints, and promotes elasticity, working synergistically with collagen peptides for optimal results.

Vitamin C

A crucial cofactor for collagen synthesis, this nutrient optimizes collagen efficacy by helping the body produce stronger, more stable collagen fibers.

Hydrolyzed Bovine Collagen, L-Tryptophan, AstraGin® Proprietary Blend (Astragalus membranaceus and Panax notoginseng root extracts), Hyaluronic Acid, Vitamin C.

Questions? We've Got Answers!

What is collagen, and why do I need it?

Collagen is the most abundant protein in the body, providing strength and elasticity to your skin, hair, nails, joints, and connective tissues. As we age, collagen production decreases, leading to wrinkles and joint discomfort. Supplementing with collagen helps restore your body's natural levels.

What makes Collagen 4+ different?

Collagen 4+ stands out with its advanced formula that includes four powerful cofactors—AstraGin®, L-Tryptophan, Hyaluronic Acid, and Vitamin C—to enhance collagen absorption and efficiency. Made with grass-fed, ethically sourced bovine collagen, it’s designed for unmatched quality and superior results, supporting joints, bones, digestion, and radiant beauty.

Who can benefit from collagen supplementation?

Anyone looking to improve skin elasticity, strengthen hair and nails, support joint and bone health, or enhance muscle recovery can benefit from collagen, especially individuals over 30, athletes, or those experiencing signs of aging.

Is your collagen tested for purity and safety?

Yes! UNI KEY Collagen 4+ is glyphosate-free, non-GMO, and manufactured in a drug- and pesticide-free facility. Each batch is rigorously tested for contaminants, allergens, and heavy metals to ensure it meets strict quality standards.

What amino acids are in one scoop of Collagen 4+?

Typical Amino Acid Profile per 11 grams of Collagen (1 scoop)

Alanine 903.7102 mg
Arginine 830.8304 mg
Aspartic Acid 641.3428 mg
Glutamic Acid 1078.622 mg
Glycine 2613.958 mg
Histidine 71.90813 mg
Hydroxyproline 1360.424 mg
Isoleucine 165.1943 mg
Leucine 301.2367 mg
Lysine 437.2792 mg
Hydroxylysine 88.42756 mg
Methionine 77.73852 mg
Phenylalanine 213.7809 mg
Proline 1438.163 mg
Serine 310.9541 mg
Threonine 194.3463 mg
Tyrosine 19.43463 mg
Valine 252.6502 mg

Please note that while Tryptophan is an amino acid that has been added to Collagen 4+ separately, it is not naturally occurring in the collagen peptides included in the formula. The amino acid profile is for the collagen peptides specifically.

Our Customers Say It Best

"I was taking a popular collagen powder from one of the big box stores, but it made me feel bloated and I never really saw any benefits. I switched to Collagen 4+ and noticed a difference immediately! My skin feels smoother, my joints aren't as stiff, and I just feel better overall. It's now part of my daily routine. I mix it into my coffee every morning and love how easy it is to take."
– Alanna B.

"I've been using Collagen 4+ daily for about 2 full weeks and am very pleased. It blends nicely into my daily smoothie. There is no aftertaste and my nails are already looking better. Will definitely keep using it. Thank you for a great product I can trust."
– Shari B.

"Finally! A collagen that ticks all the boxes. At 66 I can use all the extra support I can get for my skin, hair and nails. I love Collagen 4+! It mixes easily in water, soup, broth, yogurt –– you name it. I always feel an extra burst of gentle energy after taking it. I know and trust Uni Key products for their purity, effectiveness, and 3rd party tested formulas. This product is a win-win for me!"
– Teresa P.

Recommended by Ann Louise Gittleman, PhD, CNS

Top Nutritionist & New York Times Bestselling Author

"As we age, collagen production naturally declines—weakening everything from our skin's elasticity to our joint and gut integrity. After witnessing thousands struggle with premature aging, joint discomfort, and structural health issues, I knew we needed more than just another collagen powder—we needed a complete collagen solution.

I spent over a decade researching collagen and a year refining and perfecting this formula before bringing it to market. Every ingredient was hand-selected for a reason—from the clean, hydrolyzed bovine peptides to the four critical cofactors that supercharge absorption and tissue repair. What makes me especially proud is how versatile and easy it is to use—with no taste, it mixes effortlessly into soups, drinks, and smoothies, making it a seamless addition to any daily routine.

And the results? They speak for themselves. My clients have reported stronger hair, more supple skin, less joint stiffness, and improved digestion within just weeks. Collagen 4+ was built to absorb and transform, and it's doing just that. If collagen hasn't worked for you in the past, Collagen 4+ will change your mind, and your body!"

Why Buy from UNI KEY?

Our Quality Promise

At UNI KEY Health, we are committed to providing the highest quality supplements. Our products are manufactured in the USA at a Good Manufacturing Practices (GMP) and FDA-registered facility. Each batch undergoes rigorous testing for purity, potency, and heavy metals to ensure you receive only the best.

100% Satisfaction Guarantee

We stand behind every product we offer with our 90-Day Money-Back Guarantee. If you're not completely satisfied for any reason, simply call us at 1-800-888-4353 or email info@unikeyhealth.com, and we’ll make it right.

We invite you to try UNI KEY Health products today—RISK FREE!

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GMP Certified

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trusted since 1992

3rd party tested

Verified Customer Reviews

My hair, skin, and nails haven't looked this good in years. I was really starting to wonder if my hair was just going to break off. I had dry, thin very curly hair. After a month of using this daily, I have moisture, volume, bounce and length coming back. This has been such a wonderful change and I intend to keep using it. This is a wonderful product!

From so many different collagen products on the market, love the Uni Key Collagen 4+ -I'm a long time user of Uni Key's high quality supplements. The Collagen together with a few other supplements in my regimen, helps tremendously with my hip arthritis. Really felt the difference when I paused it for a couple of weeks (the pain returned(:). I feel it also helps with overall health and condition of skin, nails and hair. I put it in my Ryze coffee, juices or just water. Great product!

I can’t get enough of this! It’s part of my morning routine. Not only does it make my skin amazing (52 years old) but my hair is stronger and healthier and not falling out like before.

How I use it - in my morning hot chocolate drink:
2 scoops of collagen
1 scoop of vitamin C
1 tbs cocoa (from Whole Foods) - mix the ingredients in cup well
1 1/2 cup of boiling water
A splash of 0 sugar syrup
Sip and glow!

I’m loving Unikey’s new collagen! It dissolves easily in my coffee and is flavorless! My skin and joints feel great!

So glad to hear that your loving our new Collagen4+ and that it's helping your skin and joints! We appreciate the great review and thank you for making UNI KEY a part of your health journey :)

Really like it.

We're thrilled to hear that you like our Collagen4+ Joyce! Thanks for the great review :)

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