Synadentix review
A nightly chewable aimed at gum health, dry mouth and breath, not a substitute for a dentist
By the RJ Editorial Team. Sales page checked 2026-09-23. Last updated 2026-09-23.
Is it worth it?
You probably noticed blood in the sink when you brush, or your dentist mentioned pockets at your last check-up, and now you are quietly worried about where this ends. Gum treatment is expensive and a bit frightening, so a chewable you take before bed sounds like a kinder option. Worth saying what is actually in it. Hydroxyapatite is a genuine tooth mineral with real research behind it in toothpaste for remineralising enamel. Lactoperoxidase, lysozyme and lactoferrin occur naturally in saliva and turn up in dry mouth lozenges sold in pharmacies. So the ingredient list is not invented. What is missing is how much of each you get, because it is a proprietary blend, and there is no published trial on this specific product. The bigger promises are the seller's. Reactivating your body's ability to repair teeth overnight, ingredients travelling through your bloodstream to rebuild gums, protecting your brain from oral bacteria: those are offered without evidence, and I would read them as advertising. The bacteria and heart and brain link is a real research area, but nobody has shown a chew resolves it. If your gums bleed, get a dentist to look first. Cleaning below the gumline is the part with evidence behind it. Alongside that, as something for dry mouth and breath, this is a reasonable thing to try. Instead of it, no.
Pros
- Hydroxyapatite and salivary enzymes are real, studied ingredients
- One chew at night, nothing to learn or mix
- 90 day money back guarantee
- Six bottle pack is by far the lowest cost per bottle
Cons
- Proprietary blend, so no doses disclosed and no trial on the product itself
- Claims about repairing teeth overnight and protecting the brain come with no evidence
- Page never says how many chews are in a bottle, how many per day, or how long delivery takes
What you get
Bottles of chewable tablets shipped to you, two, three or six depending on the option, each bottle around a 30 day supply. The blend lists guava fruit powder, a microcrystalline hydroxyapatite complex, and salivary enzymes including lactoperoxidase, glucose oxidase, lysozyme and lactoferrin. Six bottle orders add three digital guides (breath, mouth breathing, a gum massage routine) and free shipping.
Before you buy
- Check the maths: three bottles is $207 but six bottles is $294, so the middle option is poor value
- Two bottles is $158 plus $9.99 shipping, and refunds need you to write in, so keep the order email
- If your gums bleed or feel loose, book a dentist first, since that is time sensitive and this is not treatment
Who it suits
Someone with mild gum niggles, dry mouth or breath worries who is already seeing a dentist and wants an easy extra
