Dental Seaweed Powder for Dogs & Cats: Plaque Removal

100% pure Ascophyllum nodosum seaweed powder. Clinically proven to reduce plaque and tartar by working through your dog's digestive system — no brushing required. Sprinkle on food once a day.

• 100% pure Ascophyllum nodosum — no fillers, no additives
• Clinically proven plaque and tartar reduction
• Freshens breath by reducing bacteria at source
• Suitable for dogs and cats
• Compostable packaging — 100% plastic free
• 250g (£9.99) or 1kg (£18.49) | Subscribe & save 10%

⚠️ Do not use continuously for more than 6 months without a break. Consult your vet before use if your pet has a thyroid condition.

How seaweed cleans dogs' teeth

Most dental products work on the surface — you apply them to the teeth and hope for the best. Ascophyllum nodosum works differently. When your dog eats it, the active compounds are absorbed through the digestive system and secreted in saliva. That means the seaweed is actively working on the teeth and gumline throughout the day, from the inside out, every time your dog salivates.

The mechanism is well understood and clinically studied. Ascophyllum nodosum interferes with the ability of oral bacteria to adhere to tooth surfaces. Bacteria that can't stick can't form the biofilm that becomes plaque. Plaque that doesn't form can't harden into tartar. The result, with consistent daily use, is a measurable reduction in both plaque accumulation and existing tartar softening over 4–8 weeks.

This is 100% pure dried Ascophyllum nodosum — the specific species with the clinical evidence behind it. Not a blend, not an extract, not a kelp mix. One ingredient, because that's the one that works.

What it does

Reduces plaque and tartar The primary reason to use it. Ascophyllum nodosum has been studied in peer-reviewed research and shown to reduce plaque scores in dogs with consistent daily use. Existing tartar softens gradually, making it easier to remove or for the dog to dislodge naturally through chewing. New plaque formation slows significantly.

Freshens breath Bad breath in dogs is almost always bacterial. The same mechanism that reduces plaque — disrupting bacterial adhesion in the mouth — reduces the bacterial load that causes odour. Most owners notice breath improvement within 2–3 weeks, often before the visible dental change is apparent.

Supports gum health Unchecked plaque accumulation at the gumline leads to gingivitis and, eventually, periodontal disease. Keeping plaque levels low with daily seaweed powder is one of the most effective preventative measures available without daily brushing.

Broader health benefits Ascophyllum nodosum is naturally rich in minerals, amino acids, and antioxidants. Regular use contributes to coat condition, supports immune function, and provides trace minerals from a whole food source. The natural iodine content also supports thyroid function — though this is also why you should consult your vet before use if your dog has a thyroid condition.

How to use it

Sprinkle directly onto food once a day. No mixing required — most dogs don't notice it's there. Start with a small amount for the first week and build to the full dose.

Results are gradual. Allow 4–8 weeks of consistent daily use before assessing the effect on plaque and tartar. Breath improvement is typically noticeable sooner — within 2–3 weeks.

Important: Do not use continuously for more than 6 months without taking a break. This is standard guidance for all iodine-containing supplements.

Seaweed powder vs other dental products

Seaweed powder is not a replacement for brushing — nothing is as effective as daily mechanical cleaning when it's done properly. But most dogs won't tolerate daily brushing, and many owners won't manage it consistently. In practice, seaweed powder is the most evidence-backed daily dental intervention for dogs whose teeth aren't being brushed.

Dental chews and treats help through mechanical abrasion — chewing action removes surface plaque from certain areas of the teeth. They're useful, but they don't reach the gumline, the inner surfaces of the teeth, or the back molars reliably. Seaweed powder works on all surfaces simultaneously because it acts through saliva.

Used together — daily seaweed powder plus regular natural chews — gives you both the systemic action and the mechanical abrasion. That combination is as close to comprehensive dental care as most dogs will practically get without sedated dental cleaning.

Composition & packaging

Consult your vet before use if your pet has a thyroid condition or is on thyroid medication. Do not use continuously for more than 6 months at a time.

Part of our natural dog supplements range. For broader oral care, pair with natural chews from our dog chews collection.