Petsmile Professional Dog Toothpaste Review: Does Calprox Work?

Short answer: Petsmile Professional is a US-made dog toothpaste built on Calprox (encapsulated calcium peroxide) and it holds a Veterinary Oral Health Council seal — but for plaque only, awarded in 2011, not for tartar. The manufacturer says you can apply it without a brush, yet still recommends brushing for best results, and in Britain you will mostly be buying it on import. If getting into your dog's mouth every day is the real battle, a dental powder in the food bowl is the easier routine to keep.

This review is written for UK owners. It covers what Calprox is meant to do, what the VOHC seal does and does not certify, how to use Petsmile with and without a brush, how it compares with a brushless powder, and what UK vet data says about why daily home care matters so much for British dogs.

What Petsmile Professional dog toothpaste actually is

Petsmile is a pet toothpaste from an American oral-care company. Its signature ingredient is Calprox, which the brand describes as "an encapsulated form of calcium peroxide and minerals". The stated idea is that Calprox gently dissolves the pellicle — the thin protein film that coats teeth within minutes of cleaning and gives plaque bacteria something to grip — and helps remineralise enamel. In other words, the chemistry is meant to do part of the job a bristle would otherwise have to do.

The flavours are very American: London Broil (beef), Rotisserie Chicken and Say Cheese. The brand says the paste contains no silica, parabens, sulfates or triclosan, and that it is safe to swallow, so there is nothing to rinse. That matters, because every dog swallows almost all of its toothpaste. It is also the reason you should never use your own toothpaste on a dog: many human pastes contain fluoride and some contain xylitol, which is dangerous for dogs. If that has already happened, our guide to what to do if your dog ate toothpaste covers the UK steps, including the Animal PoisonLine (01202 509000).

The VOHC seal: read the small print

The Veterinary Oral Health Council lists "Petsmile Professional Pet Toothpaste" with a seal awarded in 2011 under a plaque claim. VOHC seals are granted per claim, and Petsmile is not listed for tartar (calculus). A plaque claim means the product was shown to slow the soft bacterial film; it does not mean it reduces the hard, mineralised deposit that plaque turns into if it is left alone.

Two points of context for UK readers. First, the VOHC is a US-based body; there is no British equivalent seal, and in the UK nobody regulates dental claims on pet toothpaste the way the Veterinary Medicines Directorate (VMD) regulates medicines. Second, plenty of toothpastes sold here are simply not on the VOHC list — Virbac C.E.T. Enzymatic Toothpaste, Logic Oral Hygiene Gel and Beaphar's paste were not listed when we checked in October 2026. Absence from the list is not proof a product fails; it means the maker has not put it through that particular process. Petsmile's seal is a genuine point in its favour, and we would not pretend otherwise.

The 62% and 28% figures

Petsmile's own pages quote a "62% greater reduction in plaque and a 28% greater reduction in gingivitis than the control pet toothpaste". Notice what that compares: Petsmile against another toothpaste, not against doing nothing. The page gives no authors, no journal and no trial details, and we could not find a peer-reviewed publication behind those numbers, so treat them as a manufacturer claim rather than independent evidence. If the plaque-versus-tartar distinction is new to you, our explainer on dog tartar vs plaque is the clearest place to start.

How to use Petsmile, with or without a brush

Petsmile's directions say there is "no rinsing or brushing required, although for best results, we recommend using a toothbrush". You squeeze a pearl-sized amount onto a toothbrush, straight onto your dog's teeth or directly onto the tongue, once or twice a day.

• With a brush (best): work along the outer surfaces of the back teeth, where plaque builds fastest, angling the bristles towards the gumline. Thirty seconds a side is plenty once your dog is used to it.
• Finger or teeth application: smear the pearl along the upper back teeth inside the lip. Better than nothing, but there is no mechanical scrubbing.
• Tongue application: the easiest route, but you are relying on licking to spread the paste. Expect the least contact with the gumline, which is exactly where gum disease begins.

The no-brush option is useful for nervous dogs, but be realistic about what it can do. Mechanical brushing is the reference standard: in a randomised, blinded trial in the Journal of Veterinary Dentistry, dogs brushed daily or every other day had significantly less plaque, calculus and gingivitis than dogs brushed weekly or fortnightly (Harvey, Serfilippi & Barnvos, 2015). The PDSA recommends brushing daily, or at least three times a week, using a pet toothpaste and building up gradually with rewards.

Why daily home care matters for British dogs

Dental disease is the single most common problem UK vets record in dogs. The Royal Veterinary College's VetCompass programme followed a random sample of 22,333 dogs at 784 UK practices for a year and found periodontal disease in 12.5% — about one dog in eight. Risk was highest in Toy Poodles, King Charles Spaniels, Greyhounds and Cavalier King Charles Spaniels; dogs under 10 kg had roughly three times the odds of dogs weighing 30–40 kg, and dogs aged 12 or over nearly four times the odds of two- to four-year-olds.

That 12.5% is what vets spot in a routine consultation. A 2020 review in the Journal of Small Animal Practice found that visual checks of conscious dogs put prevalence at around 9–18%, but detailed examinations under anaesthetic find it in 44–100% of dogs. Most of the problem sits below the gumline where you cannot see it.

And most of us are not brushing. A Hartpury University survey of 422 UK owners found only 4% brushed daily and 50.9% had never brushed their dog's teeth at all. So the honest question is not whether Petsmile is a decent toothpaste — it is — but whether it will actually be used every day in your house.

Petsmile vs a brushless dental powder: an honest comparison

Petsmile delivers one main chemistry to the tooth surface by hand. A dental powder takes the opposite approach: several ingredients aimed at different parts of the problem, given in the food bowl where nobody has to open the dog's mouth.

To be straight about it: Petsmile has a VOHC seal and our powder does not. What the powder offers in exchange is a routine that does not depend on your dog's patience, plus coverage across several mechanisms at once.

What is in our powder, and why

Kelp — Ascophyllum nodosum (8%) is the ingredient with the best direct dog evidence. In a double-blind, randomised, placebo-controlled trial in Frontiers in Veterinary Science (Gawor et al., 2018), 60 client-owned dogs given a daily treat containing A. nodosum for 90 days, after a professional clean, ended with significantly lower plaque, calculus and bad-breath (volatile sulphur compound) scores than the placebo group. It is eaten, not brushed on, which is why a bowl-based routine can work. Kelp naturally contains iodine, so if your dog has a thyroid condition, check with your vet first.

Hydroxyapatite (15%) is the mineral tooth enamel is largely made of; a 2021 review in Materials covers its role in oral-care products for enamel remineralisation and biofilm management. SHMP (1%) is an anti-tartar chelator that binds calcium in saliva, the same type of ingredient used in human tartar-control toothpaste. The GOX/LPO enzyme system (0.6%) — glucose oxidase and lactoperoxidase — is the saliva-style enzyme pair found in enzymatic dog toothpaste. Alongside sit zinc citrate (0.6%) for breath, inulin (14%), green tea extract (0.5%), an oral probiotic lysate (0.3%), calcium carbonate and calcium lactate (8% each), and pumpkin (12%) and pork liver (10%) for palatability — because a powder your dog refuses does nothing.

Ingredient research explains why we chose these; it is not a clinical trial of the finished powder, and we do not claim it beats any other brand. If you want those ingredients together in one scoop, see the full Pure Majesty formula and serving guide.

Petsmile: pros, cons and the limits nobody should hide

Where Petsmile earns its place

• A VOHC plaque seal, which few pastes sold to UK owners can show.
• Can be applied without a brush, which helps nervous or newly adopted dogs.
• Designed to be swallowed; no rinsing.

Where it falls down for UK owners

• It still needs your hands near the mouth every day — the step where most home dental routines quietly stop.
• No tartar claim, and the headline percentages are self-published.
• Hard to buy in Britain: imported stock, variable prices and possible import charges. Our Petsmile UK buying guide covers where to find it and the cheaper UK alternatives.

The limit that applies to every product on this page, ours included: no toothpaste and no powder removes tartar that has already hardened, especially below the gumline. That needs a scale and polish under general anaesthetic. UK prices vary widely: an independent practice in Grimsby lists a dog scale and polish from £263.70 including anaesthetic, while the Royal Veterinary College's London first-opinion hospital charges £500 for dogs under 25 kg, with extractions added on from £450. The RCVS is clear that "anaesthesia-free" cleaning cannot clean properly below the gumline and is not in a dog's best interests — more on that in our guide to dog teeth cleaning without anaesthesia. Home care slows the rate at which you end up back in that chair. If your dog already has brown build-up, red or bleeding gums or a sharp smell, see your vet first and start home care once the teeth are clean.

Our verdict

Buy Petsmile if your dog happily lets you handle its mouth, you will apply it daily (ideally with a brush), and you do not mind ordering from abroad. It is a credible paste with a real, if narrow, VOHC plaque seal.

Choose a dental powder if brushing has already failed in your house, you have a small or older dog in a high-risk group, or you simply want dental care to happen at mealtimes without a fight. If you are weighing the two head to head, our Petsmile vs dental powder comparison walks through which suits which dog, and how to combine them.

Frequently asked questions

Does Petsmile Professional dog toothpaste have a VOHC seal?

Yes. The VOHC lists Petsmile Professional Pet Toothpaste with a seal awarded in 2011 under a plaque claim. It is not listed for tartar (calculus).

Do you have to brush with Petsmile?

No. The manufacturer says no brushing or rinsing is required and that you can apply it to the teeth or tongue, but it recommends a toothbrush for best results. Brushing adds the mechanical cleaning that paste alone cannot.

Can I buy Petsmile in the UK?

Not easily. We found no mainstream UK pet retailer stocking it in October 2026; it reaches British owners mainly through the brand's international shipping and import marketplaces. Check the expiry date and any import charges before you order.

Is Petsmile safe if my dog swallows it?

The brand says it is safe to swallow and needs no rinsing. Introduce it gradually and stop if you see stomach upset. Never substitute human toothpaste, which can contain fluoride or xylitol.

Can a dental powder replace brushing?

Brushing remains the gold standard. A powder is built for the many owners who will not brush daily, and a product used every day generally beats a better one used twice a month. Many owners use both.

What if my dog already has heavy tartar?

See your vet. Hardened tartar, especially below the gumline, needs a scale and polish under general anaesthetic. Start daily home care once the teeth are back to a clean baseline.

Choosing what you will actually stick with

Petsmile is a reasonable toothpaste with a genuine VOHC plaque seal. Its weakness is not the chemistry; it is the daily trip into your dog's mouth, plus the hassle of importing it. If that trip is not going to happen, the seal buys you nothing.

It helps support cleaner teeth, fresher breath and daily oral hygiene. It does not remove existing tartar or treat gum disease — that is your vet's job.

Sources

• Veterinary Oral Health Council, accepted products for dogs (checked October 2026). vohc.org
• Petsmile, Calprox and how-to-use pages (checked October 2026). petsmileusa.com
• O'Neill DG, Mitchell CE, Humphrey J, Church DB, Brodbelt DC, Pegram C (2021). Epidemiology of periodontal disease in dogs in the UK primary-care veterinary setting. J Small Anim Pract. doi:10.1111/jsap.13405
• Wallis C, Holcombe LJ (2020). A review of the frequency and impact of periodontal disease in dogs. J Small Anim Pract 61(9):529-540. PubMed
• Harvey C, Serfilippi L, Barnvos D (2015). Journal of Veterinary Dentistry. PubMed
• Gawor J et al. (2018). Frontiers in Veterinary Science 5:168. PubMed
• Chen L et al. (2021). Materials. PubMed
• PDSA, Dental disease in dogs. pdsa.org.uk
• Hartpury University, dog owner oral-health survey (2023). hartpury.ac.uk
• RCVS statement on anaesthesia-free dental procedures. rcvs.org.uk
• UK dental fees: Abbey Vet Centre, Grimsby; RVC Beaumont Sainsbury Animal Hospital (checked October 2026).

This article is general information, not veterinary advice. Pet toothpastes and dental powders are care products and complementary feeds, not veterinary medicines authorised by the VMD. Talk to your vet before starting any supplement, and see them promptly if your dog has painful gums, a broken tooth or persistent bad breath.