Third-party tested by Eurofins
Longevity Complex Soft Chews – Joint, Gut & Immune Support for Dogs

Healthy Aging For Every Dog

Support mobility, vitality and cellular health at any age — one daily soft chew they will love.

  • Joint Support — Enriched with ingredients that support joints, cartilage & mobility.
  • Skin & Coat Support — Reduces excessive shedding, allergies & flare ups.
  • Gut Support — 2B CFU Calsporin® + Inulin for a balanced gut–immune function.

Free shipping · 60-day risk-free guarantee

Reviewed by 2 independent PhD veterinary scientists · 17+ peer-reviewed studies referenced

Vet-developed · GMP-certified · EU-made · full dossier of substantiation on file

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, 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%.

Four Core Benefits for Long-Term Health

Our veterinary team developed the Celltail formula around four core areas that are essential for supporting dog health.

  • Hip & Joint

    Type II collagen, green-lipped mussel & Boswellia support healthy joints.

  • Digestion

    Calsporin® probiotics & inulin support a healthy digestive system.

  • Immune Health

    β-glucans and vitamin C support strong immune function.

  • Cellular Energy

    L-Carnitine and omega-rich salmon oil support normal cellular energy, healthy skin and a shiny coat.

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

What owners actually report.

4.8 average · 1,200+ verified purchases

12 June 2026

Rex used to hesitate before the stairs. Six weeks in he takes them two at a time again. The coat change surprised me most.

✓ Marta Kowalska · Rex, 9 — German Shepherd
2 June 2026

We started early rather than waiting for problems. Firmer stools within two weeks and she treats the chew like a reward.

✓ Thomas Bauer · Luna, 4 — Border Collie
24 May 2026

Honest review: the first tub did very little for us and delivery took eight days. Second month was better on mobility, but I expected faster.

✓ Elena Rossi · Baffo, 11 — Mixed breed

Reply from Celltail

Thank you for the honest note, Elena — eight days is longer than our EU standard and we've refunded that shipping. Most owners see mobility change between weeks 6–8.

19 May 2026

Buddy's shedding dropped noticeably and the itching in spring was far milder than last year.

✓ Simon Devlin · Buddy, 7 — French Bulldog
8 May 2026

Good formula and I like that every dose is on the label. Would prefer a slightly smaller chew for fussy eaters.

✓ Anna Lehmann · Fio, 6 — Labrador
30 April 2026

Our vet checked the ingredient list and had no objections — that's what convinced me to subscribe.

✓ Julien Marchand · Nala, 10 — Beagle

Ingredients

Nothing hidden behind a “proprietary blend”.

You should know exactly what your dog is getting. So we show every ingredient, the amount in each chew, and why it's there.

Type II Collagen

400 mg

Type II Collagen

Cartilage and joint support

Joints

Scientific study: McAlindon T. et al., Osteoarthritis and Cartilage (2011)
Salmon Oil

150 mg

Salmon Oil

Omega fatty acids for mobility and skin

Skin & Coat

Scientific study: Bauer J.E., JAVMA (2011)
Green-Lipped Mussel

150 mg

Green-Lipped Mussel

Source of glycosaminoglycans supporting mobility

Joints

Scientific study: Bui L.M. & Bierer T.L., Veterinary Therapeutics (2003)
Inulin

150 mg

Inulin

Prebiotic fibre supporting gut microbiome

Digestion

Scientific study: Beynen A.C., Dog nutrition science review
L-Carnitine

100 mg

L-Carnitine

Supports energy metabolism

Vitality

Scientific study: Gross K.L. et al., canine energy metabolism review
Yeast Cell Walls (Biolex® MB40)

100 mg

Yeast Cell Walls (Biolex® MB40)

β-glucans supporting immune and gut health

Immunity

Scientific study: Stuyven E. et al., Veterinary Immunology (2010)
Boswellia serrata Extract

75 mg

Boswellia serrata Extract

Supports joint comfort

Joints

Scientific study: Reichling J. et al., Schweiz Arch Tierheilkd (2004)
Turmeric

60 mg

Turmeric

Antioxidant support

Skin & Coat

Scientific study: Colitti M. et al., curcuminoid activity in animals
Vitamin C

30 mg

Vitamin C

Antioxidant and collagen support

Immunity

Scientific study: EFSA opinion — vitamin C and oxidative stress
Bacillus velezensis (Calsporin®)

2 Billion CFU

Bacillus velezensis (Calsporin®)

Probiotic supporting digestive health

Digestion

Scientific study: Bacillus subtilis C-3102 canine microbiota study (2017)

Simona with Baddy
Simona, founder Baddy, 11

I built this for one dog first.

Baddy slowed down the winter he turned nine. Nothing dramatic — he just stopped meeting me at the door, and took the stairs one at a time.

I had four different tubs on the shelf and no idea what was actually in them. So I spent two years working with vets and an EU manufacturer to build one chew with every dose printed on the label.

Celltail is that chew. If it doesn't work for your dog, tell us within 60 days and we'll refund it — I'd rather have your trust than your order.

Simona

Simple Pricing

Care plans designed for your dog's wellbeing

All plans include free shipping and a 60-day money-back guarantee.

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

1 Pack

1-month supply

$47.00 $1.56/day

incl. VAT · $0.78 per chew

  • Free shipping
  • 60-day money-back guarantee
  • 60 chews per pack
  • Suitable for all breeds & sizes

✓ 60-day risk-free guarantee

★ Most Popular
Save 16%
LONGEVITY COMPLEX 3 PACK

3 Pack

3-month supply

$118.00 $1.31/day

incl. VAT · $0.65 per chew

  • Free shipping
  • 60-day money-back guarantee
  • 180 chews per pack
  • Suitable for all breeds & sizes

✓ 60-day risk-free guarantee

Save 24%
LONGEVITY COMPLEX 5 PACKS

5 Pack

5-month supply

$177.00 $1.18/day

incl. VAT · $0.59 per chew

  • Free shipping
  • 60-day money-back guarantee
  • 300 chews per pack
  • Suitable for all breeds & sizes

✓ 60-day risk-free guarantee

Expert Validation

Independently reviewed by PhD level scientists

Two independent PhD-level veterinary scientists reviewed every ingredient, dosage and safety profile before Celltail was launched.

✓ 2 independent PhD reviewers ✓ 17+ peer-reviewed studies referenced ✓ Every dosage individually assessed
Dr. M. F. A. Chishti

Dr. M. F. A. Chishti

Veterinary Formulation Specialist

Ph.D Animal Nutrition · MSc. (Hons.) Animal Nutrition · DVM

“I have analysed your supplement formulation to outline the expected efficacy and safety of the selected ingredients. Your selection is really appreciable for this longevity product — you have focused on the key areas associated with ageing.”
✓ Ingredient efficacy verified✓ Dosages assessed✓ Safety & compatibility confirmed
Joint Health

“The selected ingredients involving a variety of combinations interlinked with joint health are good. Green Lipped Mussel supports joint comfort and mobility, while Hydrolyzed Collagen (Type II) contributes to cartilage maintenance.”

Gut Health

“The choice of prebiotic combinations (Inulin and Yeast β-glucans) plays an essential role. The inclusion of a probiotic bacterial strain optimises product efficiency.”

Dr. Fabio Mora

Dr. Fabio Mora

Nutritional Consultant

PhD · Toxicology & Pharmacology · EU Grants Expert

“The combination of pre- and probiotics supports microbiome balance in ageing animals, which may help maintain nutrient absorption and natural resilience.”
✓ Formulation gaps identified✓ Dosage refinements provided✓ Backed by 17+ peer-reviewed studies
Antioxidant & Vitality

“Antioxidants may play a role in supporting cognitive function and overall wellbeing in older animals. Maritime Pine Bark Extract scavenges free radicals more potently than Vitamin E.”

Microbiome & Resilience

“The pre- and probiotic combination supports digestion, nutrient absorption and immune resilience, which often decline with age.”

Full dossier of substantiation is maintained on file and available to competent authorities on request, in full compliance with EU feed law (Regulation EC 767/2009).

Risk-Free

Your satisfaction is guaranteed

Try Celltail risk-free. If you're not happy with your dog's experience within 60 days, we'll refund every cent.

60-Day Money Back
Not satisfied? Full refund, no questions asked.
Free Shipping
On all orders. Delivered to your door.
Quality Guaranteed
GMP certified, vet-developed, science-backed.

Common Questions

Everything you need to know

How much should I give my dog?
Feeding guide based on body weight: up to 10 kg — 1 soft chew daily; 10–30 kg — 2 soft chews daily; over 30 kg — 3 soft chews daily. Give directly or mix with food, and do not exceed the recommended amount.
Is Celltail safe for my dog?
Yes. Every ingredient was independently reviewed by two PhD-level veterinary scientists for safety, appropriate dosing, and compatibility. Celltail contains no artificial additives and is produced in compliance with EU complementary feed regulations (Regulation EC 767/2009).
How long until I notice a difference?
Most owners report visible changes in mobility, coat quality, or digestion between weeks 6 and 8 of daily use. Because Celltail works through gradual, cumulative nutrition rather than a fast-acting drug, we recommend at least 2 months of consistent use before judging results.
Can young dogs take Celltail, and is it suitable for all ages?
Yes. Celltail is suitable for dogs from 12 weeks of age through their senior years. Supporting cellular health proactively, before visible signs of ageing appear, is one of the core principles behind the formula.
Can Celltail replace the other supplements my dog is currently taking?
For most dogs, yes. Celltail combines ten researched actives covering joint, gut, immune and vitality support in one chew, replacing the need for multiple single-purpose supplements. If your dog is on a prescribed supplement for a specific medical condition, check with your vet before switching.
Are the ingredients research-backed and vet-reviewed?
Yes. Every active ingredient and dose was selected based on 17+ peer-reviewed studies and independently assessed by two PhD-level veterinary scientists, Dr. M. F. A. Chishti and Dr. Fabio Mora. A full dossier of substantiation is available to competent authorities on request.
What if I'm not satisfied with Celltail?
We offer a 60-day money-back guarantee. If you're not happy with your dog's experience for any reason, contact us within 60 days of purchase for a full refund, no questions asked.
How should I store it?
Store in a cool, dry place at room temperature, out of reach of children and animals. Celltail is a complementary feed, not a substitute for a complete diet — always ensure fresh drinking water is available.
What's the difference between the 1-pack, 3-pack and 5-pack?
All three contain the exact same Longevity Complex formula. The 3-pack and 5-pack simply offer better value per chew for dogs on an ongoing daily routine, with free shipping and the same 60-day guarantee on every size.
How long does shipping take, and is it free?
Shipping is free on all orders within the EU. Orders are dispatched on business days and typically arrive within 2 to 4 business days.
What payment methods do you accept?
Accepted payment methods depend on your delivery country and are shown at checkout. Available options may include credit and debit cards, PayPal, Klarna, Apple Pay and Google Pay.
How does the right of withdrawal work?
EU customers have a statutory 14-day right of withdrawal from the date of receipt, in addition to Celltail's separate 60-day money-back guarantee.

Give your dog the support they deserve

Every day matters. Start your dog's daily wellbeing routine today and see the difference quality nutrition can make.

Start Your Dog's Wellbeing Routine
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