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Longevity Complex Soft Chews – Joint, Gut & Immune Support for Dogs

".Their coat is shinier, their energy levels have increased, and they seem happier than ever before."

-Daisy

Verified buyer

"My dog absolutely loves this food! It's clear that the taste and quality are top-notch." -Daisy

Rated 4.9/5 by early adopters

Longevity Complex Soft Chews – Joint, Gut & Immune Support for Dogs

Help your dog stay active, comfortable, and full of life.

Daily soft chews that support mobility, digestion, immune health, and everyday vitality.

One simple formula replacing multiple supplements.

Helps promote healthy digestion and natural defenses

Daily vitality & skin/coat wellbeing

One comprehensive formula — no need for 3–4 separate supplements

Best for dog that:

Feel stiff after resting or during activity

Have sensitive digestion

Are getting older and need extra vitality support

Perfect for sensitive tummies

Supercharge immunity System

Bursting with protein, vitamins, and minerals

Supports strong muscles, increases bone strength

Description

Help your dog stay active, comfortable, and joyful.

Daily soft chews designed to support mobility, digestion, immune health, and everyday vitality for adult and senior dogs.

✔ Supports comfortable joint movement
✔ Helps maintain digestive balance and gut health
✔ Supports immune function and daily vitality
✔ Easy soft chew format dogs enjoy

Made with carefully selected ingredients and produced according to EU feed regulations with transparent ingredient declaration.

Celltail Longevity Complex is a premium soft-chew supplement created to support healthy ageing and everyday wellbeing in dogs of all breeds and sizes. Each chew delivers a balanced combination of joint-supporting nutrients, digestive prebiotics and probiotics, and natural antioxidant compounds that help maintain mobility, vitality, and overall comfort.

The formula combines several functional ingredients known for their nutritional roles in canine health. Type II collagen and green-lipped mussel provide structural nutrients that support cartilage maintenance and normal joint function. Salmon oil, naturally rich in omega-3 fatty acids, contributes to skin and coat quality while also supporting mobility and general vitality. Inulin, a natural prebiotic fibre, works together with the stable probiotic Bacillus velezensis to support digestive comfort and help maintain a balanced gut microbiome. Turmeric, Boswellia serrata, vitamin C, and yeast β-glucans provide antioxidant and plant compounds that support normal immune responses and physiological balance, while L-Carnitine contributes to normal energy metabolism.

Celltail Longevity Complex is produced in a palatable soft-chew form designed for easy daily use. The chew base includes dried apple pulp, potato starch, vegetable glycerin, pea-based ingredients and natural flavouring components that help ensure good acceptance by dogs. Because the chews are produced without artificial hardening agents, they may naturally adhere slightly to each other. This is normal and does not affect the product’s quality or effectiveness.

Full ingredient list: dried apple pulp, potato starch, type II collagen, vegetable glycerin, salmon oil, green-lipped mussel powder, inulin, brewer’s yeast cell walls (Biolex® MB40), hydrolyzed animal protein, coconut oil, turmeric powder.

Active ingredients per chew:

Ingredient	Amount	Function
Type II Collagen	400 mg	Cartilage and joint support
Salmon Oil	150 mg	Omega fatty acids for mobility and skin
Green-Lipped Mussel	150 mg	Source of glycosaminoglycans supporting mobility
Inulin	150 mg	Prebiotic fibre supporting gut microbiome
L-Carnitine	100 mg	Supports energy metabolism
Yeast Cell Walls (Biolex® MB40)	100 mg	β-glucans supporting immune and gut health
Boswellia serrata Extract	75 mg	Supports joint comfort
Turmeric	60 mg	Antioxidant support
Vitamin C	30 mg	Antioxidant and collagen support
Bacillus velezensis (Calsporin®)	2 Billion CFU	Probiotic supporting digestive health

Analytical constituents: crude protein 22.56%, crude fat 6.23%, crude fibre 2.24%, crude ash 9.39%, moisture 11.49%.

How to use it?

Chews may naturally stick together. Separate before serving.

Daily Feeding Guide (by body weight)

Up to 10 kg — 1 soft chew daily

10–30 kg — 2 soft chews daily

Over 30 kg — 3 soft chews daily

Usage Tips

Can be given with meals or between meals

Do not exceed the recommended daily amount

For best results, use consistently every day

Suitable for long-term daily use

Storage

Keep tightly closed at room temperature. Store in a dry place.

Supports natural defenses

Supports normal digestive function

Supports normal joint function

Supports antioxidant defenses

Our Benefits

Formulated with ingredients supported by scientific studies to help maintain mobility, digestive balance, immune defenses, and overall vitality as dogs age.

Backed by scientific literature

External PhD-level formulation review

Targets multiple ageing pathways

Proven dosage refinement

Age-specific mineral support

A single supplement instead of many

Start baking doggy delights

*100% satisfaction. No fuss, 30-day money-back guarantee

Buy more and pay less

Rated 4.8/5 by our customers

Intro

Try & evaluate (60 chews

€29,00

Title

Total:

€29,00

Try it for 60 days. If you don’t love the change in your dog’s daily comfort and vitality, you get a full refund.

Support Your Dog’s Health As They Age — From Joints to Gut to Energy

Joint & Cartilage Maintenance

Over time, joint tissues naturally experience wear. Our formula supports the normal renewal of cartilage and helps maintain comfortable movement by supplying the body with structural nutrients and omega-3 fatty acids essential for joint health..

Gut & Immune Balance

A healthy microbiome is central to overall wellbeing. The prebiotic–probiotic combination in the formula helps maintain digestive comfort while supporting natural immune defenses from within the gut, where most immune cells are located

Cellular Vitality & Antioxidant Defense

Dogs’ cells face oxidative stress daily, especially as they age. Plant antioxidants, vitamin C, and omega-3s help support normal antioxidant capacity, contributing to energy, coat quality, and overall vitality.

Daily Energy & Metabolic Support

Ageing dogs often experience slower metabolism and reduced activity levels. L-Carnitine helps support normal energy use and contributes to active daily living — so your dog feels ready for every walk, run, and adventure.

The Result: Whole-Body Longevity Support

When these systems — mobility, digestion, immunity, cellular vitality, and energy — work harmoniously, dogs stay healthier for longer. That’s the foundation of the Celltail Longevity Formula.

The Journey Behind Our Vision

Celltail is a pioneering pet health brand committed to enhancing the longevity and quality of life for dogs through scientifically formulated nutrition. Our comprehensive supplements are crafted to promote joint health, digestive comfort, immune strength, and sustained energy, ensuring your furry companion thrives throughout their golden years. Inspired by our beloved dog, Baddy, who faced early mobility and digestive challenges, we set out to create a singular solution. Frustrated with fragmented options that addressed only one aspect of wellbeing, we envisioned a holistic approach. Thus, the Longevity Complex was born—a daily supplement that combines meticulously chosen, research-driven ingredients to support multiple health systems simultaneously. Designed for daily integration, our formula ensures your pet receives consistent nourishment and care.

Our goal is straightforward: to empower dogs to live vibrant, active, and fulfilling lives, enriching every moment spent with their cherished families.

Simona&Baddy

Research-backed ingredients

Omega-3 Fatty Acids

Supports joint cartilage structure and mobility in dogs.

Research
In dogs with degenerative joint disease, 6-months daily undenatured type II collagen (UC-II®) supplementation improved lameness and pain scores with good tolerability.

Study name to list
Cabezas MÁ et al. Long-term supplementation with an undenatured type-II collagen (UC-II®) formulation in dogs with degenerative joint disease: Exploratory study. Open Veterinary Journal, 2022.

Type II Collagen

Supports joint cartilage structure and mobility in dogs.

Research
In dogs with degenerative joint disease, 6-months daily undenatured type II collagen (UC-II®) supplementation improved lameness and pain scores with good tolerability.

Study name to list
Cabezas MÁ et al. Long-term supplementation with an undenatured type-II collagen (UC-II®) formulation in dogs with degenerative joint disease: Exploratory study. Open Veterinary Journal, 2022.

Green Lipped Mussel

Natural marine ingredient that helps maintain joint comfort and mobility.

Research
Feeding a green-lipped-mussel–enriched diet for 60 days reduced pain and improved functional outcomes in client-owned dogs with osteoarthritis.

Study name to list
Rialland P et al. Effect of a diet enriched with green-lipped mussel on pain, behaviour, and functioning in dogs with clinical osteoarthritis. Research in Veterinary Science, 2013.

Inulin

Prebiotic fibre that supports beneficial gut bacteria and digestive health.

Research
Reviews of pet-food trials report that inulin and oligofructose increase beneficial bifidobacteria and can improve stool quality in dogs and cats.

Study name to list
Hussein HS, Flickinger EA, Fahey GC. Petfood applications of inulin and oligofructose. Journal of Nutrition, 1999.

L-Carnitine

Supports normal energy metabolism and fat utilisation.

Research
Experimental work in dogs shows that supplemental L-carnitine is involved in long-chain fatty-acid transport into mitochondria and helps support energy production and protein turnover.

Study name to list
Varney JL et al. L-Carnitine metabolism, protein turnover and energy production. Journal of Animal Physiology and Animal Nutrition, 2020.

Brewer’s yeast cell walls Biolex® MB40

Provides yeast β-glucans that help modulate immune responses and support gut health.

Research
In healthy dogs, dietary yeast β-1,3/1,6-glucans altered immune markers and fecal microbiota, indicating immune-modulatory and gut-support effects.

Study name to list
Marchi PH et al. Effects of increasing levels of purified beta-1,3/1,6-glucans on digestibility, immunity and fecal microbiota of healthy adult dogs. Microorganisms, 2024.

(You can also cite: Rummell LM et al. A proof-of-principle study investigating the effects of a yeast-derived β-glucan on immune markers in dogs. Animals, 2022.)

Boswellia serrata extract

Plant resin extract used to support joint comfort and mobility.

Research
In dogs with chronic inflammatory joint and spinal disease, 6 weeks of Boswellia resin supplementation led to clinical improvement in lameness and pain in about 70% of cases.

Study name to list
Reichling J et al. Dietary support with Boswellia resin in canine inflammatory joint and spinal disease. Schweizer Archiv für Tierheilkunde, 2004.

Turmeric

Source of curcuminoids with antioxidant properties that support joint and overall wellbeing.

Research
A randomized, double-blind, placebo-controlled trial of a turmeric extract (P54FP) in dogs with elbow or hip osteoarthritis showed improved clinical lameness scores versus placebo.

Study name to list
Innes JF et al. Randomised, double-blind, placebo-controlled parallel group study of P54FP for the treatment of dogs with osteoarthritis. Veterinary Record, 2003.

Vitamin C

Antioxidant that contributes to normal collagen formation in cartilage and other connective tissues.

Research
Preclinical and clinical data indicate that vitamin C can increase collagen synthesis and support healing of musculoskeletal tissues while reducing oxidative stress.

Study name to list
DePhillipo NN et al. Efficacy of vitamin C supplementation on collagen synthesis and oxidative stress in bone, tendon and ligament healing. Orthopaedic Journal of Sports Medicine, 2018.

Probiotic Bacillus velezensis

Spore-forming probiotic that supports a balanced gut microbiota and digestive health.

Research
In dogs with recurrent anal sac impaction, a chew containing fibre plus Bacillus velezensis was reported as a safe option that improved clinical signs and stool features.

Study name to list
Salichs M et al. Efficacy of an oral chew containing fibre and Bacillus velezensis in dogs with recurrent anal sac impaction. Veterinary Record, 2024.

Proper nutrition is essential for healthy aging in dogs

As dogs advance in age, they undergo gradual changes in their joints, digestion, immune system, and cellular health. Providing them with specific nutrients aids in sustaining mobility, vitality, and overall wellness.

Significant Scientific Findings:

80%

A substantial portion of a dog's immune system resides in the gut, highlighting the critical role of digestive health in overall wellness. (Supported by veterinary immunology studies)

Title

90%

A majority of senior dogs experience a decline in natural collagen production, affecting their joint comfort and mobility. (Insights from connective tissue biology studies)

Title

70%

Many aging dogs face increased oxidative stress, impacting cells throughout their bodies, including joints, skin, and connective tissues. (Findings from canine aging research)

Give your furry friend the gift of wholesome nutrition

Frequently Asked Questions

What is Celltail Longevity Formula?

Celltail Longevity Formula is a daily soft-chew supplement designed to support your dog’s mobility, vitality, digestion, and natural immune defenses. It combines clinically researched ingredients including Type II Collagen, Green-Lipped Mussel, omega-3s, probiotics, and antioxidants. One formula that takes the place of multiple products.

What benefits can my dog expect?

With daily use, this formula helps support:

Normal joint function and flexibility

Healthy cartilage and connective tissues

Balanced gut microbiota and digestion

Natural immune defenses

Daily vitality and wellbeing

Which dogs can take this supplement?

It is suitable for adult dogs of all breeds and sizes, especially:

Senior dogs

Active or working dogs

Dogs showing early signs of stiffness or reduced mobility

Dogs needing extra digestive or immune support

How long until results?

Most owners notice improvements in 3–6 weeks, depending on age, activity level, and individual health. Consistent daily use is key.

Can I give Celltail Longevity Formula with my dog’s food?

Yes. The soft chews can be given with meals or between meals. Many dogs enjoy them as a treat.
Please note: Because of the natural soft-chew consistency and absence of artificial hardening agents, the chews may gently adhere to each other. This is completely normal and does not impact product quality or performance.

Are the ingredients scientifically backed?

Yes. Each major ingredient—such as Type II Collagen, Green-Lipped Mussel, L-Carnitine, probiotics, and yeast beta-glucans—has published scientific research supporting its role in joint, digestive, or immune health.

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CELLTAIL LTD

71-75 Shelton Street, Covent Garden, London, United Kingdom, WC2H 9JQ

info@celltail.com

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Longevity Complex Soft Chews – Joint, Gut & Immune Support for Dogs

Best for dog that:

Our Benefits

Buy more and pay less

Support Your Dog’s Health As They Age — From Joints to Gut to Energy

The Journey Behind Our Vision

Research-backed ingredients

Proper nutrition is essential for healthy aging in dogs

Frequently Asked Questions

Contact Us

Contact Info

Contact Information