petlements.

Knotentang · Seealge · Braunalge

Ascophyllum nodosum (seaweed)

Evidence: Dog: Some evidence · Cat: Traditional useTeeth & oral care

A brown alga said to act on the bacterial film on the teeth by way of the gut. For dogs there is one controlled 90-day trial; the manufacturer’s cat trials are unpublished, so we carry no reference amount for cats.

Why this grade: For dogs, one double-blind randomised placebo-controlled trial over 90 days with 60 dogs: less plaque and deposit than on placebo (Gawor et al. 2018). A second study by the same group measured compounds in saliva rather than the deposits, so it is not a replication. For cats there are only studies without randomisation or blinding.

„contributes to normal oral hygiene“

Reference amount per kg per day

Worth knowing

The alga is naturally high in iodine. If your animal’s thyroid is under veterinary supervision, cats in particular, or if it is pregnant, ask your vet first.

Sources

Products containing Ascophyllum nodosum (seaweed)

Why there is no amount here

The randomised, placebo-controlled study behind the amount was carried out in dogs. For cats there are only studies that were neither randomised nor blinded, plus a manufacturer's figure. That does not carry a reference amount of its own, so cats stay unrated here.

Dose for a 20 kg Dog