Quick Answer: Collagen servings are based on your dog's weight. 1 to 10kg is 1 teaspoon (3g) daily, 11 to 20kg is 2 teaspoons (6g), 21 to 30kg is 3 teaspoons (9g), and 31kg and over is 4 teaspoons (12g). The same guide applies to both Pure Collagen and Mobility & Joints. Consistency matters more than exact timing. Always follow the serving guide printed on the pack.
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You've bought a collagen supplement for your dog.
Now you're wondering: how much should I actually give them?
Getting the serving right matters. Too little and you won't see results. Too much and you're wasting money.
Here's the full guide, by weight.
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The Serving Guide by Weight
This is the guide printed on the pack. Find your dog's weight, read across.
| Dog weight | Daily serving | Pure Collagen delivered |
|---|---|---|
| 1 to 10kg | 1 teaspoon (3g) | 3,000mg |
| 11 to 20kg | 2 teaspoons (6g) | 6,000mg |
| 21 to 30kg | 3 teaspoons (9g) | 9,000mg |
| 31kg and over | 4 teaspoons (12g) | 12,000mg |
The same serving guide applies to Mobility & Joints. Always follow the serving guide printed on the pack.
Why the milligram figures work like that
Pure Collagen is 100% hydrolysed collagen peptides, so the grams convert straight across: 3g is 3,000mg, 6g is 6,000mg, 9g is 9,000mg and 12g is 12,000mg. Nothing else is in the pouch.
Mobility & Joints is a 6-in-1 formula, so it is not 100% collagen. Its published figure of 5,000mg hydrolysed collagen peptides is the amount in a 6g serving, which is the 2 teaspoon serving for an 11 to 20kg dog. The serving itself still follows the same four weight bands above.
The rule worth remembering: a milligram figure only means anything when you know which weight band it belongs to. "6,000mg per serving" is true for an 11 to 20kg dog on Pure Collagen. It is not the figure for a 5kg terrier or a 45kg mastiff.
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How to Measure It
The measure is a teaspoon. One level teaspoon is 3g.
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1 to 10kg: 1 level teaspoon
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11 to 20kg: 2 level teaspoons
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21 to 30kg: 3 level teaspoons
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31kg and over: 4 level teaspoons
Weigh your dog rather than guessing. A kitchen scale for small dogs, or the scales at your vet practice for larger ones, most of which let you use them free of charge.
Different brands use different concentrations, so a teaspoon of one product is not the same as a teaspoon of another. Always read the serving guide on the pack in front of you.
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Why the Serving Matters
Collagen supplementation only works if your dog gets the amount their weight calls for.
Giving too little is one of the main reasons people don't see results. They give a sprinkle here and there, inconsistently, and wonder why nothing changes.
The key factors that determine how much your dog needs:
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Body weight: Larger dogs have more tissue to support, which is why the guide is built on four weight bands
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Current condition: Dogs with existing issues benefit most from getting the full serving every day
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Activity level: Active dogs use collagen faster
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Age: Older dogs with declining natural production may benefit from consistent supplementation
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Factors That Affect How Much Your Dog Needs
Body weight
This is the primary factor, and it is the one the guide is built on. A 40kg Labrador has significantly more joints, tendons, skin, and connective tissue than a 4kg Chihuahua. The Labrador sits in the 31kg and over band on 4 teaspoons (12g). The Chihuahua sits in the 1 to 10kg band on 1 teaspoon (3g).
Current joint condition
Dogs with existing joint issues, arthritis, or recovering from injury still follow the same weight bands. What changes is how much it matters that they get the full serving every single day.
Activity level
Working dogs, agility dogs, and highly active dogs put more stress on their joints. They're using collagen faster than a less active dog. The serving for their weight band is still the right serving, but consistency becomes even more important.
Age
Senior dogs have naturally declining collagen production. They're trying to maintain existing tissue with reduced manufacturing capacity. Consistent daily supplementation helps bridge this gap.
Breed predisposition
Some breeds are genetically prone to joint issues (German Shepherds, Labradors, Bulldogs, Dachshunds). Starting supplementation earlier and staying consistent is particularly valuable for these breeds.
Growing dogs
A puppy moves up through the bands as they grow. Re-check their weight regularly and move them up a teaspoon when they cross into the next band.
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When and How to Give Collagen
Timing
It doesn't matter whether you give collagen in the morning or evening. What matters is consistency.
Pick a time that works with your routine and stick to it. Most owners find it easiest to add it to their dog's main meal.
With food or without?
Give collagen with food. This:
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Makes it easy to administer (mix into their meal)
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Ensures they eat the full serving
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Is gentler on the stomach for sensitive dogs
Splitting the serving
For larger dogs on 3 or 4 teaspoons, you can split the daily amount between two meals. This isn't necessary but some owners prefer it. There's no evidence that splitting is better than giving it all at once. The daily total stays the same.
Mixing methods
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Wet food: Sprinkle on top and stir in
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Dry food: Add a splash of water to help it stick, or sprinkle directly
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Raw food: Mix directly into the meal
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Common Mistakes
Mistake 1: Being inconsistent
Giving collagen three days this week, skipping a week, then starting again. Collagen works through consistent, daily supplementation. Sporadic use won't produce results.
Mistake 2: Giving less than the weight band calls for
Using less than the guide says to "make it last longer." This false economy means your dog doesn't get what their weight band calls for. Follow the serving guide.
Mistake 3: Giving up too soon
Expecting results in a week. Collagen supplementation typically takes 4-6 weeks for visible improvements. Commit to at least 8 weeks of consistent daily servings before judging it.
Mistake 4: Not adjusting for weight changes
If your dog gains or loses significant weight, check the table again. A dog who drops from 22kg to 19kg moves from 3 teaspoons down to 2. A puppy who grows past 30kg moves up to 4.
Mistake 5: Assuming more is better
Doubling the serving won't double the results. Stick to the band your dog's weight puts them in. Excess collagen is simply excreted, wasting your money.
Mistake 6: Reading a milligram figure without its weight band
Any "Xmg per serving" claim, on our packs or anyone else's, is meaningless until you know which weight band that serving is for. Always check the two together.
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Signs It's Working
If you're giving the right amount consistently, you should see:
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Week 2-3: Possible coat improvement (shinier, softer)
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Week 4-6: Mobility improvements (less stiffness, more willingness to move)
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Week 6-8+: Sustained improvements, maintained mobility
If you're seeing these improvements, carry on at the same serving.
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Signs You May Need to Check Something
No improvement after 8 weeks of consistent daily servings
First, re-weigh your dog and check you're on the right band. If you're confident the serving is right and there's still no improvement, consult your vet. There may be an underlying issue that supplements alone can't address.
Digestive upset
Rare with collagen, but if it occurs, try starting at a smaller amount for a week and building up to their full weight-band serving. Some sensitive dogs need a slower introduction.
Improvement then regression
If your dog improved but then regressed, check your consistency. Have you been skipping days? Has anything else changed (weight, activity level, another health issue)?
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Frequently Asked Questions
How much collagen does my dog need?
1 to 10kg: 1 teaspoon (3g). 11 to 20kg: 2 teaspoons (6g). 21 to 30kg: 3 teaspoons (9g). 31kg and over: 4 teaspoons (12g). Daily. The same guide applies to both Pure Collagen and Mobility & Joints.
Can I give too much collagen?
Collagen is a natural protein, so it's not toxic in excess. However, there's no benefit to going beyond your dog's weight band. Your dog will simply excrete what they can't use. Stick to the serving guide.
Should I give more if my dog has severe arthritis?
No. Stay on the serving for your dog's weight band. Going beyond it is unlikely to speed results. Consistency and patience matter more.
My dog is right on the edge of a band. Which serving should I use?
The bands are 1 to 10kg, 11 to 20kg, 21 to 30kg and 31kg and over, so every weight falls into exactly one of them. A 20kg dog takes 2 teaspoons. A 21kg dog takes 3. If your dog's weight moves up and down a little, weigh them and go by the band they're actually in that month.
Does my puppy need collagen?
Puppies naturally produce plenty of collagen. Supplementation is usually unnecessary unless your vet recommends it for a specific reason (certain large breed puppies, for example). If you do supplement a growing puppy, follow the weight bands and move them up as they grow.
Is a teaspoon the same as a scoop?
The measure for both Pure Collagen and Mobility & Joints is a teaspoon, and one level teaspoon is 3g. If another brand talks in scoops, check what their scoop actually weighs before comparing.
How long should I continue giving collagen?
Indefinitely, for ongoing support. Collagen supplementation maintains levels. If you stop, levels will gradually decline again. Think of it as daily maintenance, not a short-term treatment.
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Which Product is Right for Your Dog?
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For general wellness and prevention: Pure Collagen (100% hydrolysed collagen peptides)
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For dogs with existing joint issues: Mobility & Joints (6-in-1 formula with collagen, glucosamine, and more)
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For fussy eaters or gut support: Beef Bone Broth (40% collagen with irresistible flavour)
Pure Collagen and Mobility & Joints share the same four weight bands. Always follow the serving guide printed on the pack.
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The Bottom Line
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Weigh your dog and find their band: 1 to 10kg, 11 to 20kg, 21 to 30kg, or 31kg and over
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Give the matching serving of 1, 2, 3 or 4 teaspoons daily
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Be consistent with daily supplementation
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Be patient and allow 6-8 weeks for visible results
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Re-check the band whenever your dog's weight changes
Get these basics right, and you'll give your dog the best chance of seeing real improvements.
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Important: This information is for educational purposes and doesn't replace veterinary advice. If your dog is showing signs of joint problems, pain, or mobility issues, consult your vet for proper diagnosis and treatment. The guidance in this article is based on current veterinary research and best practices, but every dog is different.
Last Updated: August 2026
