Preservative free

Preservatives are additives that stop bacteria, yeast and mould growing in a product. In supplements they always appear with an E number, such as potassium sorbate (E 202) or sodium benzoate (E 211). UK labels must state both the job and the substance, so a preservative can never hide behind a soft word like freshness.

Preservatives sold in the UK are authorised additives. They are assessed before use and only permitted within set limits. Choosing preservative free is a preference for a shorter label, not a correction of something unsafe. That distinction matters, because it keeps your attention on what a supplement actually delivers: the ingredient, its form and its dose.

Many supplements never needed a preservative in the first place. Preservatives only do something where there is water. Capsules, tablets and powders are dry, so microbes have almost nothing to grow on. Most of this collection is therefore preservative free by design, not because a formula was changed. If you filter on more label criteria, our dietary preferences pages sit next to this one.

The form decides more than the claim

• Capsules and tablets: dry, so no preservative is needed. Look instead at flow agents such as magnesium stearate or silicon dioxide.
• Powders: also dry. Flavoured powders more often carry a sweetener or an acid than a preservative.
• Oils and softgels: no water at all. They usually contain tocopherols (vitamin E) to stop the oil turning rancid. That is an antioxidant, not a preservative.
• Liquids, drops and gummies: water is present. Brands work around preservatives with a thick glycerol or honey base, with alcohol, with single-dose sachets, or by asking you to keep the bottle in the fridge.

That is the honest trade-off in water-based forms. Without a preservative, an opened bottle often keeps for one to three months instead of a year, so the storage line on the label is worth reading before you buy. The gain is a shorter ingredients list and a taste that is not built on additives. Products that skip artificial colours often skip preservatives too, which is why our range without artificial colours overlaps with this page.

How we choose the products in this collection

We judge a product on three things: the form of the ingredient, the dose, and whether the combination makes sense. For this filter we add one more check: does this product need a preservative at all, and if it does, what did the brand do instead? A dry capsule without preservatives is normal, so we do not treat it as an achievement. A stable liquid without them shows real formulation work, and we point that out. We buy directly from the brands, our compliance team reviews every label before it goes live, and we test products ourselves alongside independent lab spot-checks. You can read how we select.

Who this selection suits

It is useful if you react to sorbates or benzoates, if you buy for children who already get these additives from soft drinks and sauces, or if you simply want fewer E numbers in your daily routine. Many shoppers combine it with our products without added sweeteners. One reminder: preservative free tells you nothing about the amount of vitamin, mineral or plant extract inside. Check the nutrient and the dose first, then the rest of the label.