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Immunity Compostable Refill

WHITENING TOOTHPASTE

4.8
Rated 4.8 out of 5 stars
362 Reviews

Greet the day with confidence with Duo tablets for vitality and immune support. We topped off our signature oral microbiome-balancing tablets with a perfectly portioned dose of vitamin D3 (30mcg) and vitamin B12 (6mcg) to bolster the body’s defenses and lift mood. Consider it your sunshine on a cloudy day.

Your subcription will include 1 glass printed bottle that holds 62 tablets + compostable refill pouches.

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Inside the tablet

30mcg vitamin D3
bolsters immune defenses and mood
6mcg vitamin B12
boosts mood and neurological function
nano-hydroxyapatite
remineralizes teeth
xylitol (birch extract)
promotes saliva production
calcium carbonate
natural polish
sodium bicarbonate
natural polish
cellulose
provides structure to tablets
xanthan gum
protects against dry mouth
magnesium stearate
vegetable-derived powder lubricant
hydrated silica
natural polish
menthol
cooling, soothing sensation
natural flavor
sage, peppermint, wintergreen, spearmint
vitamin C, vitamin E
gum health
stevia leaf extract
cavity-fighting plant extract

A higher standard

Naturally whitening
Anti-sensitivity
Sustainable + vegan
Hydrating, silky foam
Travel-friendly + mess-free
  • absorbs while you brush
  • gentle, efficient digestion
  • rapid uptake test
Standard Supplement Pills

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Vegan

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SLS-Free

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Dentist Created

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Cruelty-free

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Non-Toxic

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Fluoride-free

“What you brush 
with matters.”

Tooth enamel cannot repair itself from within, which means your toothpaste has an important job to do. We packed Duo with proven ingredients like nHa to remineralize teeth and promote vibrant oral health. Developed by dentists, better for everyone.

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Dr. Stevie Roberts, DMD

Dr. Robert Johnson, DMD, MD

Clean Ingredients

Restore and whiten enamel, soothe sensitivity, and balance the oral microbiome while boosting mood and immunity.

Nano-hydroxyapatite

A dentist-backed fluoride alternative that whitens and remineralizes enamel.

Vitamin D3 (30mcg)

Elevates mood and aids neurological function.

Vitamins B12 (6mcg) 

Elevates mood and aids neurological function

Learn more about the science

How to brush with Duo

Crush a tablet between your teeth

Wet your toothbrush

Brush to activate foam

Rinse and smile

Plastic-free made easy

Save up to 33% and lower your carbon footprint with subscription refills (in compostable pouches) delivered right on time.

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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 362 reviews
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362 reviews
  • CA
    Caroline A.
    Verified Buyer
    Reviewing
    Immunity Compostable Refill
    I recommend this product
    Rated 5 out of 5 stars
    3 minutes ago
    Love it!

    I like the taste, the tabs' crunchiness and the clean feeling afterwards. The tabs produce a nice foam to help with the brushing.

    Was this helpful?
  • SD
    Sarah D.
    Verified Buyer
    Reviewing
    Immunity Compostable Refill
    I recommend this product
    Rated 5 out of 5 stars
    10 hours ago
    Fall asleep faster

    I love using the immunity in the morning and the lavender mint(sleep) at night. I had my son try it out he loves the sleep one bc it helps you fall asleep gently. These tablets leave my teeth feeling cleaner, stronger, and with reduced sensitivity.

    Was this helpful?
  • BB
    Blair B.
    Verified Buyer
    Reviewing
    Original Compostable Refill
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    Best option we've found!

    I've been purchasing and trying various toothpastes and tooth tablets for the last six months in an effort to find one for my family. My criteria was that it needed to contain nano hydroxyapatite, taste good to my children, and fit in our budget. I've tried four different brands so far and Duo has come out on top. They weren't the cheapest, but my kids wouldn't use the others. They tasted horrible or foamed so much they were rejected! I was also gratified to see the different options of sleep, energy, and immunity. I've tried all so far and have stopped my search.

    I would love to see Duo branch out to other flavors, but the mint flavors are working for us so we won't switch.

    Was this helpful?
  • TP
    Tracy P.
    Verified Buyer
    Reviewing
    Sleep
    I recommend this product
    Rated 5 out of 5 stars
    5 days ago
    These are fabulous!

    I love these everyday and especially for travel. My mouth is so clean!

    Was this helpful?
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