In New Zealand, most hydrolysed dog foods are veterinary diets you buy through your vet, like Royal Canin Hypoallergenic and Pro Plan HA. You don't always need a written script, but they're sold through vet clinics and vet suppliers, so they usually mean a consult first. Little Green Dog is a single hydrolysed protein kibble you can order direct, and try in a 2kg bag for $19.99.
What does hydrolysed actually mean?
Hydrolysed protein is protein that's been broken into pieces too small for your dog's immune system to recognise, so it doesn't react to them.
Your dog's body reacts to the shape of a protein. Break that shape into small enough fragments and there's nothing left to set the reaction off. For dogs whose skin and tummy flare up on ordinary food, it's the most reliable approach we have.
It's also why vets reach for it when they suspect a food allergy. This part of the category has real science behind it.
Why is it usually a vet food?
Hydrolysing protein is expensive and fiddly. For years the only companies doing it at scale were the big veterinary brands, and they sold through clinics because those diets were designed for diagnosis, not everyday feeding.
There's a practical reason too. A vet running an elimination trial wants to control exactly what the dog eats for eight to twelve weeks. Selling through the clinic keeps that trial tight.
The category grew up inside the vet channel for those reasons, and it has mostly stayed there since.
Do you legally need a prescription in NZ?
Not always, and this trips people up.
Some hydrolysed diets are sold over the counter at vet suppliers. Others your clinic will want to discuss with you first. It varies by brand and by retailer. Calling them vet-channel foods is closer to the truth than calling them restricted.
What that means for you: you can often buy these foods without a formal script. You'll just be buying them through a vet retailer, at vet retail prices, usually after a consult.
What are the options in New Zealand?
| Option | Where you get it | Protein | Try before you commit? |
|---|---|---|---|
| Royal Canin Hypoallergenic | Vet clinics and vet suppliers | Hydrolysed soy | No |
| Pro Plan HA | Vet clinics and vet suppliers | Hydrolysed | No |
| Hill's z/d | Vet clinics and vet suppliers | Hydrolysed | No |
| Little Green Dog | Order direct online and available through some vets | Single hydrolysed chicken | Yes, 2kg for $19.99 |
The three vet diets are proven and well made. If your vet has diagnosed a severe food allergy and put your dog on one that's working, stay on it, or discuss transitioning to another product.
Plenty of dogs itch and gurgle without a formal diagnosis, and their owners don't want to spend $120 on a bag to find out whether it helps.
So what makes ours different?
Ours is a single hydrolysed chicken protein you buy direct, with no consult and no clinic visit.
It's grain-free, and free from beef, dairy, gluten, wheat, fillers, and artificial colours. It's vet-formulated with 6+ functional superfoods. Each batch is independently tested by an outside laboratory across 73 nutritional, chemical, and safety factors.
You can also try a 2kg bag for $19.99 before you commit to anything.
We made it for our own dog, Chloe. She scratched herself raw and nothing on the shelf helped.
If you're still working out whether a hypoallergenic food is the right route at all, our complete guide to hypoallergenic dog food covers the full picture.
What it won't do
It won't fix every dog. A deep food allergy sometimes needs a vet, and some dogs react to things that have nothing to do with food, like fleas or pollen.
We're not a veterinary diet and we don't claim to treat disease. If your dog is really struggling, see your vet. If your vet has already put you on a working diet, stay there. If they've given you the ok to move to a maintenance diet then look at Little Green Dog.
If you suspect food is the problem and you want to test that cheaply, this is a genuine hydrolysed option you can try today.
How do I switch without upsetting the tummy?
Slowly. Move over 7 to 10 days, mixing a bit more of the new food in each day.
A sudden switch upsets most dogs, sensitive or not. A slow one gives the gut time to adjust. If you want the longer version, we wrote a full guide to sensitive-stomach food that covers it.
FAQ
Do I need a prescription to buy hydrolysed dog food in NZ?
Not always. Most hydrolysed diets in NZ are sold through vet clinics and vet suppliers, and some are available over the counter there. Little Green Dog is available online with no vet visit.
Is hydrolysed protein safe for long-term feeding?
Yes. Ours is a complete food formulated for everyday feeding, so you can stay on it long term. If your dog is on a vet diet for a diagnosed condition, check with your vet before changing.
How long before I see a difference?
Give it a few weeks. Skin and coat take time to turn around, and a food trial usually runs 8 to 12 weeks to be sure. Some owners notice the tummy settle sooner than the itch.
Is it cheaper than a vet diet?
Usually, yes, and you can try it for $19.99 first. Our full-size bags work out cheaper per kg the bigger you buy, and subscribers save 20%.
What if it doesn't work for my dog?
Then it's not the right food, and we'd rather you found that out for $19.99 than $120. We back it with a 30-day Sensitivity Promise.