Free UK delivery on orders over £50Doctor-guided selectionReviewed by a GMC-registered clinicianBuy 3, get 1 free on selected supplementsFree UK delivery on orders over £50Doctor-guided selectionReviewed by a GMC-registered clinicianBuy 3, get 1 free on selected supplements

Why The Wellness recommends this

Curated, not stocked.

Protein supplements vary enormously in formulation quality and label honesty. Transparent Labs earns its place here because it publishes a fully open label — no proprietary blends, no undisclosed additives. The isolate format is a deliberate clinical choice: it delivers a higher protein-to-weight ratio and less residual lactose than concentrate, making it relevant for a broader range of patients and clients, not just those optimising performance.

About this product

Grass-Fed Whey Protein Isolate

Transparent Labs Grass-Fed Whey Protein Isolate is a single-ingredient protein supplement built around whey protein isolate sourced from grass-fed cattle. Whey isolate is the most refined form of whey — processed to remove the majority of fat and lactose — which means a higher proportion of protein per serving and a formula that tends to sit better for those sensitive to standard whey concentrates.

This suits anyone with a measurable protein target they are struggling to hit through food alone: people in structured strength or endurance training, those managing body composition, or individuals recovering from injury or surgery who have elevated protein requirements. It fits cleanly into a routine — post-training is the most common use case, but timing matters less than total daily intake.

The isolate form is specifically relevant if you have mild lactose sensitivity, since the processing step that elevates protein purity also strips most of the lactose. It is not, however, appropriate as a substitute for medical-grade protein support if you have a diagnosed condition affecting protein metabolism.

Transparent Labs publishes its formulation openly, which is the primary reason this product earns a place on a clinician-facing shelf. For a performance supplement, knowing exactly what is in the product — and what is not — matters. The grass-fed sourcing claim is made by the brand; as with any such claim, those for whom this is a priority should review the brand's own documentation.

What it does

Benefits

  1. 01

    High-protein isolate for post-training muscle recovery

  2. 02

    Low residual fat and lactose from isolate processing

  3. 03

    Suits mild lactose sensitivity better than whey concentrate

  4. 04

    Supports daily protein targets in structured training

  5. 05

    Single-ingredient formula with full label transparency

Get the most from it

How to use

Mix one scoop with water or milk as directed on the packaging. Post-training is the most common use case, though total daily protein intake matters more than precise timing. Follow the serving guidance on the label for dose specifics.

What's inside

Ingredients

View full ingredient list

Grass-fed Whey Protein Isolate

Common questions

Frequently asked

What is the difference between whey isolate and whey concentrate?

Whey concentrate retains more fat and lactose from the original dairy source. Isolate undergoes additional filtration to remove most of these, resulting in a higher protein percentage per serving and significantly less lactose — which is why it is often better tolerated by people with mild dairy sensitivity.

Is this suitable if I am lactose intolerant?

Whey isolate contains very little residual lactose as a result of the processing method, so many people with mild lactose sensitivity tolerate it well. If you have a confirmed intolerance or dairy allergy, check the label allergen information carefully and consult your GP or dietitian before use.

When is the best time to take this?

Post-training is the most commonly cited window, but research suggests total daily protein intake is the more meaningful variable. Take it whenever it helps you hit your daily target consistently.

Can I use this as a meal replacement?

No. Whey isolate is a protein supplement, not a nutritionally complete meal replacement. It lacks the fats, carbohydrates, fibre, and micronutrients a meal provides. Use it to supplement an adequate whole-food diet, not to replace meals.

Who should avoid this product?

Anyone with a diagnosed milk protein allergy should avoid whey entirely. Those with kidney disease or conditions affecting protein metabolism should seek advice from a clinician before increasing protein intake through supplementation.

Doctor-guided care

Performance has a baseline.

Body composition, hormones, VO₂ max — we measure them all. Train against the picture, not against guesswork.

See the workup
TRANSPARENT LABS Grass-Fed Whey Protein Isolate

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