If you are lactose intolerant, the simplest choice is a plant protein such as pea protein, which is made without milk. Whey isolate is filtered further than whey concentrate, so it usually carries less lactose, but it is not lactose-free. The NHS lists "diet and protein shakes" among foods that can contain lactose, so always check the label for milk ingredients and halal approval (NHS: lactose intolerance).
Key takeaways
- Lactose intolerance is more common in people of Asian descent, so many South Asian families in the UK are affected.
- Whey concentrate and milk protein contain lactose. Isolate has less, but is not lactose-free.
- Pea, rice, soya and hemp proteins are dairy-free. Check for shared-facility warnings if you have a milk allergy.
- For a halal shake, check the halal approval, the flavourings and any gelatine or collagen.
In this guide
Why this matters for South Asian UK families
Lactose is the natural sugar in milk. People with lactose intolerance do not make enough lactase, the enzyme that digests it, which can cause "symptoms such as bloating and diarrhoea" (NHS: milk and dairy).
NI Direct, the Northern Ireland government health site, says lactose intolerance "is more common in people of Asian or African-Caribbean descent" (NI Direct: lactose intolerance). Yet many South Asian households drink chai with milk, lassi and kheer daily, so a milky protein shake on top can tip the balance.
If you get bloated after big family meals, our guide to bloating after curry, roti and rice covers the other common causes.
Protein powders compared for lactose
| Protein type | Lactose? | Notes |
|---|---|---|
| Whey concentrate | Yes | The most common whey. Contains the most lactose of the whey types. |
| Milk protein concentrate | Yes | Whole milk protein; contains lactose. |
| Whey isolate | Usually lower | Filtered further, but not lactose-free unless the label says so. |
| Pea protein | No (dairy-free) | Gentle for most people; often has added fibre. |
| Brown rice protein | No (dairy-free) | Hypoallergenic; some blends add caffeine. |
| Soya protein | No (dairy-free) | Soya is an allergen. See pea vs soy below. |
| Hemp protein | No (dairy-free) | Earthy taste, naturally high in fibre. |
Comparing plant options? See pea protein vs soy protein and our brown rice protein guide.
How to read the label in 30 seconds
- Ingredients: allergens are in bold. Look for MILK, whey, casein, milk protein or milk powder.
- Sugars line: in a dairy protein with no added sugar, the sugars come from milk, which is mostly lactose. A lower number usually means less lactose.
- "Lactose-free" wording: only rely on it if it is actually printed on the pack.
- May contain: shared-facility warnings matter for a milk allergy, much less for intolerance.
- Halal mark or statement: see the next section.
For example, our WheyPro Vanilla lists 1.9g of sugars per 30g serving, naturally occurring from milk. It is a good whey, but it is not lactose-free, so we do not recommend it if you are lactose intolerant.
The halal check
Plant proteins are usually straightforward. Whey needs more care, because it is a by-product of cheese-making and the enzymes used can vary. Also check flavourings, any added collagen or gelatine, and capsule shells in add-ons.
The clearest answer is a halal approval for the finished product. Our halal protein powder guide walks through whey and vegan options in detail.
What to mix it with
A dairy-free powder in a glass of ordinary milk still gives you lactose. Use water, oat, soya or almond drink, or lactose-free milk. The NHS explains that lactose-free milk has "an added enzyme called lactase" so it does not trigger symptoms (NHS: milk and dairy).
The NHS also says that "taking a lactase supplement before having food or drink containing lactose may reduce or prevent symptoms for some people" (NHS: lactose intolerance).
Tip: new to a high-fibre plant protein? Start with half a scoop for a week. Added fibre such as chicory root (inulin) can cause wind at first while your gut adjusts.
Choosing the right option
Most lactose-intolerant people do best with a plain plant protein. It also suits a vegetarian South Asian diet, where protein can run short: see is dal and roti enough protein?.
Vegan · Halal & kosher approved
PeaPro Pea Protein Powder
- 18.1g protein per 25g serving; no milk in the recipe
- Hexane-free pea protein isolate, 2.6g fibre per serving
- No caffeine, no added sugar, sweetened with stevia leaf
HALAL10 10% off your first order
Shop PeaPro →Protein contributes to a growth in muscle mass and to the maintenance of muscle mass. Prefer chocolate? RicePro is also dairy-free and halal approved, but it contains guarana and green tea, which are natural sources of caffeine.
A milk allergy is not the same as lactose intolerance. If you have a cows' milk protein allergy, avoid whey and casein completely, and note that PeaPro is made in a facility that also handles milk. See your GP if symptoms persist, or before cutting out dairy, as the NHS advises not to cut milk and dairy foods out of your diet without speaking to a GP or dietitian. Speak to your GP or pharmacist if you are pregnant, breastfeeding, under 18, taking medication or have a kidney condition before using protein supplements.
Common questions
Is whey isolate lactose-free?
Not usually. Isolate is filtered further than concentrate, so it typically contains less lactose, but only a product labelled lactose-free can be relied on.
Can lactose intolerant people take whey protein?
Some people tolerate small amounts, but it varies. If whey gives you bloating or diarrhoea, a dairy-free plant protein is the easier choice.
Is pea protein halal?
Pea protein itself comes from peas, so the protein source is not an issue. Check the flavourings and look for halal approval on the finished product. PeaPro is halal and kosher approved.
Does pea protein cause bloating?
Some people notice wind at first, often from added fibre. Start with half a scoop and build up over a week.
Is WheyPro suitable if I am lactose intolerant?
No. WheyPro contains whey concentrate and milk protein concentrate, so it is not lactose-free. It also contains gluten.
Sources: NHS: lactose intolerance · NI Direct: lactose intolerance · NHS: milk and dairy · GB NHC register
General information, not medical advice. Food supplements should not replace a varied diet and healthy lifestyle. Not suitable for under-18s. If you are pregnant, breastfeeding, taking medication or have a medical condition, speak to your GP or pharmacist before use.
