Info from supplier:

DENTTABS toothbrush tablets are THE sustainable alternative to toothpaste. We we send the options with fluoride unless you put in the notes for us to pack the non fluoride option. They are 100% plastic-free, ecological and free from preservatives, consistency enhancers and other unnecessary ingredients.

Ingredients: Microfine cellulose fibers (microcrystalline cellulose), Sodium fluoride (sodium fluoride), Amisoft (Sodium Lauroyl Glutamate), Stevia (stevioside), Silica, natural (mint) aroma, Sodium hydrogen carbonate (sodium bicarbonate), Citric acid together, Magnesium stearate (Magnesium Stearate), Xanthan gum and Eugenol.

DENTTABS are free from preservatives, germ-inhibiting substances, binders and contain neither aluminium nor nanoparticles.