Advanced Science Joint Care Supplements for Senior Dogs 300x Daily Tablets

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Regular price £29.98 RRP
Sale price £29.98 50% off Regular price RRP: £59.95 Save £29.97

Important Update: Our range of Advanced Joint Supplements is being discontinued, but you can now avail of a limited-time offer of 50% off the regular retail price. Stock up while supplies last and ensure your dog continues to enjoy the benefits of these supplements.

We believe every pet deserves a life filled with joy and comfort, that’s why we partnered with Peter Wright from The Yorkshire Vet to help us create Harringtons Advanced Joint Supplements for dogs.

  • Veterinary-approved supplements designed to promote joint care in senior dogs aged 7+ years.
  • Maintains joint mobility, supports joint structure and improves stiff joints.
  • An easy-to-swallow tablet that can be crushed, taken directly from your hand or added to your dog’s food.
More Info

VAT included. Delivery costs calculated at checkout.

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(Extra charges apply for some harder to reach locations)

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Harringtons Advanced Science Diet tablets are a veterinary-approved supplement designed to promote joint care in senior dogs aged 7+ years.

Our joint care supplement is fish flavoured, from the Glucosamine and Green Lipped Muscle to soothe stiff joints and support collagen formation. Our supplement is available as an easy-to-swallow tablet and can be crushed, taken directly from your hand or added to your dog’s food. You can choose to give the recommended amount in one go or spread it throughout the day.

Tablet dimensions (approx): H: 5mm L: 14mm W: 10mm

Our joint care supplement is also available as a meaty and tasty chew!

Benefits include:

    Provides an incredibly concentrated source of Omega 3, proven to soothe stiff joints.

    Neutralises free radicals to help maintain joint mobility.
    Supports collagen formation in cartilage, tendons and ligaments

We've partnered with Peter Wright from the Yorkshire Vet to help create Harringtons advanced science diet range:

"Our dogs deserve a life filled with joy and comfort. Where they can walk, run, jump and play to their heart’s content. I’ve partnered with Harringtons Advanced Science supplements to make sure we help give it to them. We continually strive to make the best joint support products to allow your pets to share more special moments for longer." - Peter Wright MRCV 

Ingredient Benefits

  • Green-lipped Mussel

    Provides an incredibly concentrated source of Omega 3, proven to soothe stiff joints.

  • Vitamin C & E Blend

    Neutralises free radicals to help maintain joint mobility.

  • Glucosamine & Manganese

    Supports collagen formation in cartilage, tendons and ligaments.

Full Ingredients

Ingredients (amount per tablet)
Glucosamine HCL 270mg
Green Lipped Mussel 160mg
Fish Oil Powder 17mg
N-acetyl-D-Glucosamine 17mg
Manganese Sulphate 3.5mg
Hyaluronic Acid 1.7mg
Vitamin C 13mg
Vitamin E 1.2mg
Microcrystalline Cellulose
Glucosamine HCL (36%)
Green Lipped Mussel (20%)
Calcium Carbonate
Fish Oil Powder
Magnesium Stearate
Silicon Dioxide
Hyaluronic Acid
Additives (Per Kg)
Vitamin C 1625mg
Vitamin E 150mg
Manganese (as Manganous Sulphate Monohydrate) 437mg
Analytical Constituents
Protein 17.4%
Fat Content 0.6%
Crude Fibre 38.8%
Crude Ash 24.4%

Feeding Guide

Small dogs (up to 15kg)

1 tablet Per day

Medium dogs (16 - 30kg)

2 tablets Per day

Large dogs (31 - 45kg)

3 tablets Per day

Very large dogs (over 45kg)

4 tablets Per day

Feeding Calculator

Find out how much Advanced Science Joint Care Supplements for Senior Dogs (300 tablets) you should feed your pet.

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For puppies enter the expected adult weight for your breed

Your furry friend needs:
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Feed your furry friend:
grams per day!

We've crunched the numbers so you don't have to!

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*Prices based on current sale price and is subject to change when the offer ends

Looking to mix dry & wet? Here's some examples:
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*Based on an example of mixing with Chicken with Potato & Vegetables Wet Dog Food

*Based on an example of mixing with Fish Fillets in Jelly Wet Cat Food

  • Made in
    the UK
  • Natural
  • Carbon Negative
  • Recyclable


A guide on our delivery charges can be found below. A full confirmation of delivery charges and an estimated delivery date will be provided at the checkout before payment is taken.


Orders are dispatched Monday - Friday (excluding public holidays). Dispatch can take between 1-3 days depending on demand. Once dispatched, you will be notified by email and your order will then usually arrive within 24 hours (standard delivery areas, see delivery page for further details).

Standard Delivery Service

Includes delivery to:

  • All mainland postcodes in England & Wales
  • Most mainland postcodes in Scotland, excluding Scottish highlands and some harder to reach areas

Delivery Charge - Subscription Orders

Order Total Delivery Charge
Spend £30 or more FREE delivery*
Spend under £30 £4.99 delivery charge

* To qualify for free delivery, subscription items totalling over £30 must be set to repeat at the same frequency (e.g. 'every 4 weeks')

Delivery Charge - One-time Orders

Order Total Delivery Charge
Spend £40 or more FREE delivery
Spend under £40 £4.99 delivery charge


Other Delivery Areas

Please see our delivery page for further details.

Help & Advice


What is the difference between small dog food and another adult food except for the size of the kibbles?

Small dogs can benefit from extra protein in their diet, which the small breed dog food gives them.

Read More

What are the phosphorous levels of your dry foods?

We do not measure phosphorous levels in our foods. If your dog requires a low/high phosphorous
level on advice from your vet, you will need a specialist food. Your vet should be able to advise you.

When do you change a puppy from puppy food to adult food?

The point at when you change over from puppy to adult food is a personal choice. General advice is to begin to make the change once your puppy is around three-quarters expected adult size and
many people choose to do so at some point between 9 and 18 months. 

The main difference between our puppy and adult varieties is that puppy contains higher levels of protein to assist with the high growth rate associated with that life stage. Our adult varieties are suitable to feed from the age of 8 weeks, although when feeding an adult variety to a growing puppy we do advise that you feed according to your puppy's appetite. This ensures they grow at the correct rate and consume enough nutrients to support this.

Do you make a food for a diabetic dog?

We do not add sugar to our Harringtons dog food but there are natural sugars present in the
ingredients. Usually complex carbohydrates such as those found in whole grain are best as these are broken down in the digestive system slowly and so avoid peaks and troughs in the sugar levels in the body. In most of our foods we do use whole grain wheat and/or maize which take longer to digest. We therefore do not recommend grain free food for diabetic dogs.

It is often a good idea to feed your dog small portions of food more often as this will also help to keep sugar levels stable.