Compare gluten-free protein powder and supplements on what's in each serving, the allergen information and the cost per serving. Our gluten-free filter is a starting point, so if you have coeliac disease, check the label and any "may contain" statement for the exact product.
All protein powder · Whey protein · Whey isolate · Vegan protein · Collagen powder · Dairy-free
Filters
Clear all
What does gluten-free mean on a UK label?
In the UK, a food can only be labelled "gluten-free" if it contains no more than 20mg/kg of gluten as sold to the consumer. "Very low gluten" is a separate claim for foods made with specially processed cereals that contain no more than 100mg/kg.
A product described as made without gluten-containing ingredients isn't the same as one labelled gluten-free, because the legal limit applies to the finished product. If you need to avoid gluten strictly, look for the gluten-free wording on the pack.
How do you spot gluten on a supplement label?
Cereals containing gluten, such as wheat, rye, barley and oats, are one of the 14 allergens that must be emphasised within the ingredients list of pre-packed food, for example in bold, italic or coloured type. The same advice says there is no specific legal requirement to use "may contain" labels, so their absence doesn't rule out cross-contamination.
The NHS says gluten is found in wheat, barley and rye, and that oats don't contain gluten but can be contaminated with these grains during production. If you have coeliac disease, check the label every time you buy, as recipes and flavours change.
Is protein powder gluten-free?
Many protein powders are made without gluten-containing ingredients, but it depends on the exact product and flavour. This collection includes whey, whey isolate, casein, beef and vegan protein powders; whey and casein come from milk, so they aren't suitable if you also avoid dairy.
Once you've found products that suit you, compare the cost per 25g of protein rather than the tub price.
How to compare value (example figures, not real products): a £30 tub of 1kg with 24g of protein in each 30g scoop contains 800g of protein, about 94p per 25g. A £25 tub of 900g with 21g of protein per 30g scoop contains 630g of protein, about 99p per 25g, so the cheaper tub costs more per 25g of protein.
"The amount of protein on the front of the packaging doesn't always tell you which product offers the best value," says Andy Arshad, who runs SupplementHQ. Our guide to reading a supplement label explains where to find the protein per serving.
We sell the products on this page. That's our commercial interest, and it's why we show the evidence alongside them. This page is general information for adults, not personalised medical advice. Food supplements should not replace a varied, balanced diet.
Written by Andy Arshad, SupplementHQ. Last reviewed 11 October 2026.