Search "vitamins for teeth and gums" and you get the same list every time: vitamin A, the B vitamins, C, D, K, calcium, phosphorus, magnesium, zinc, CoQ10, sometimes probiotics. Every one of them is described as "essential", "strengthening" or "protecting". Almost none of that wording is legal on a UK supplement.

That matters for a simple reason. The Great Britain Nutrition and Health Claims Register is the list of statements that have survived a scientific assessment. If a nutrient has a claim in it, the evidence was judged good enough. If it does not, either nobody applied or the evidence failed. So the register is the shortest honest answer to "what actually helps".

The six nutrients — and their exact wording

The dose column is the "significant amount" a product must deliver per daily serving before it can use the claim at all — 15% of the Nutrient Reference Value. A product with less than that in it cannot say any of this, whatever the front of the pot implies.

What "maintenance of normal" actually means

Every one of these claims uses the word normal. That is not filler. It is the legal boundary of the claim.

"Maintenance of normal teeth" means the nutrient is part of how healthy teeth stay healthy. Calcium and phosphorus are the structural minerals of enamel and dentine; vitamin D also carries a claim for normal absorption and utilisation of both of them; magnesium sits in the mineral matrix alongside them. The claim says: keep your intake sufficient and the tissue has what it needs.

It does not mean repairing, remineralising, whitening, strengthening damaged enamel or reversing decay. None of those have ever been authorised for any nutrient, and a supplement making them is making a medicinal claim.

Why vitamin C is the only gum nutrient

Gum tissue is mostly collagen. Vitamin C is a required cofactor for the enzymes (prolyl and lysyl hydroxylase) that cross-link collagen into a stable fibre — which is why the historic disease of vitamin C deficiency shows up first in the gums. The mechanism is old, well described and not controversial: Murad and colleagues showed in 1981 that ascorbic acid directly regulates collagen synthesis in human cells, and the EFSA scientific opinion that authorised the claim rests on exactly that biochemistry.

That is the whole reason vitamin C has a gum claim and nothing else does. It is not that other nutrients are irrelevant to gums — it is that only one has a cause-and-effect relationship judged solid enough to put on a label. The same collagen wording covers teeth, skin, bones, cartilage and blood vessels, so vitamin C is doing more than one job.

The threshold is low: 12mg per day unlocks the claim. Most products with vitamin C in them clear it easily. What to check is whether the product declares the ascorbic acid figure, not just the weight of a "liposomal complex" or a fruit powder — the claim is about the vitamin, not the carrier.

Calcium: the number on the front is usually the wrong one

Calcium is the nutrient people expect on a teeth product, and it is the one most often mis-declared. "1,000mg calcium citrate" is not 1,000mg of calcium. Calcium citrate is about 21% elemental calcium, so that tablet delivers roughly 210mg of the mineral. Calcium carbonate is about 40%, so it packs twice as much into the same space — but carbonate needs stomach acid to dissolve, which is a problem for older adults and anyone on an acid-reducing medicine. Citrate does not.

Two figures to keep in mind. The NHS reference intake for adults is 700mg a day from all sources, and average UK diets already supply around 800–900mg. The NHS also advises that more than 1,500mg a day from supplements can cause stomach pain and diarrhoea. So the useful supplemental range is moderate — a couple of hundred milligrams tops up a diet; a gram is more than most people need and absorbs less efficiently per dose.

The EFSA opinion behind the calcium teeth claim is about sufficiency, not megadosing. The claim works at 120mg; it does not work better at 1,200mg.

Vitamin D, magnesium and phosphorus

Vitamin D is arguably the most useful of the teeth nutrients for UK adults, because deficiency is common here between October and March and the NHS advises everyone to consider 10µg a day through the winter. Its teeth claim runs alongside the calcium-absorption claim, so it is the nutrient that makes dietary calcium count.

Magnesium carries the teeth claim at 56mg, which means only a properly dosed magnesium product qualifies — a "trace" of magnesium in a multivitamin often does not reach the threshold. Read the %NRV.

Phosphorus is on the list but almost never in a supplement, because UK diets contain plenty of it and there is no shortfall to fill. It is there for completeness.

Fluoride is the one that surprises people. It carries a claim for the maintenance of tooth mineralisation, but you will almost never see it in a food supplement — it is delivered by toothpaste and, in some areas, water, and fluoride tablets at meaningful doses are regulated as medicines. It is on the list; it is not a supplement decision.

How to read a teeth-and-gums supplement label

How we used this to build a product

Our Dual Teeth & Gum Support Capsules were built backwards from the table above rather than forwards from what sounds good. Two nutrients: one with a teeth claim, one with the only gum claim. Two capsules give 215mg calcium (27% NRV) from calcium citrate and 34mg vitamin C (43% NRV) from liposomal vitamin C, both well over the threshold, with the elemental figures declared rather than the compound weight. The calcium is deliberately moderate. It contains soya, because the liposomal vitamin C is built on soya lecithin — declared on the front, not the back. £8.99 for 60 capsules.

That is the whole formula. No CoQ10, no zinc, no probiotics — not because they are useless, but because none of them can say anything about teeth or gums on a UK label, and we would rather not imply what we cannot state.

Frequently asked questions

Which vitamin is best for gums?
Vitamin C is the only nutrient with an authorised UK claim naming gums: it contributes to normal collagen formation for the normal function of gums. The claim needs at least 12mg per daily serving.

Which vitamins are good for teeth?
Four nutrients carry an authorised claim for the maintenance of normal teeth — calcium, vitamin D, magnesium and phosphorus — and fluoride carries one for tooth mineralisation. Vitamin C also carries a collagen claim for teeth.

Does calcium strengthen teeth?
The authorised wording is "maintenance of normal teeth". Calcium is a structural mineral in tooth tissue, but no supplement is authorised to claim it strengthens, repairs or remineralises enamel.

Can a supplement help bleeding gums or gum disease?
No supplement is authorised to make that claim. Bleeding or receding gums need a dentist. A supplement can only support normal gum function through normal collagen formation.

Does CoQ10 help gums?
CoQ10 has no authorised UK health claim of any kind, including for gums. Products selling it for gum health are relying on wording that is not permitted.

How much calcium should I take for teeth?
The claim applies from 120mg a day. The NHS reference intake is 700mg from all sources, most UK diets already provide 800–900mg, and the NHS cautions against more than 1,500mg a day from supplements.

Food supplement — not a medicine. Not intended to diagnose, treat, cure or prevent any disease, and not a substitute for brushing, flossing or professional dental care. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Adults 18+. Consult your GP if pregnant, breastfeeding, taking medication or managing a diagnosed condition. Charge Products is a trading name of Big Idea Services Ltd, Company No. 11645389, Unit 1, 8 Towerfield Road, Towerfield Industrial Estate, Southend-on-Sea, Essex SS3 9QE. 163,000+ verified sales · 5 Star Food Hygiene Rating.