Optimum Nutrition

Gold Standard 100% Isolate Whey Protein

Optimum Nutrition Gold Standard 100% Isolate Whey Protein 450 g costs £38.00 at Optimum Nutrition. That is about £2.53 per serving.

Contents

Flavour 1 flavour in 450 g

£38.00
≈ £2.53 / serving
In stock

You pay at Optimum Nutrition, not at us; we earn a commission. That does not change the price or the score.

How it compares to the rest all isolate

Price historyNow at the lowest point of the last 20 days
Lowest£38.004 Oct
Average£38.0020 days
Highest£38.004 Oct

Our own tracking: we follow this price daily since 4 October 2026. Lowest price per day, including sale price, without code.

SupplementScore®

An independent assessment of ingredients, dosage and quality, based on public sources.

A

Best choice

Gold Standard 100% Isolate Whey Protein · Optimum Nutrition

On a scale from A+ (best) to E

How is this score determined?

Reviewed by Android Health Clinic
Check the letter yourself · 7 points
Protein per serving25 g
+4 / 4
Leucine per servingnot declared
0 / 1
Protein content per 100 g81% (isolate standard)
+3 / 4
Full amino acid profile on the labelnot published
0 / 1

Scale: 9–10 = A+ · 7–8 = A · 5–6 = B · 3–4 = C · 2 or less = D; ±20 g of complete protein never drops below B

What is this useful for?

Whey is mainly a convenient way to reach your daily protein intake — it has no magic effect beyond other high-quality protein sources. If you get enough protein from regular food you do not need it, but in practice that is often a challenge; a guideline for building and keeping muscle is about 1.6 grams of protein per kilo of body weight per day. With lactose intolerance, concentrate can cause complaints and isolate is often the better choice; whey is not suitable with a cow's milk protein allergy. In healthy people a high protein intake has not been shown to harm the kidneys; with existing chronic kidney disease, individual protein advice from a doctor or dietitian is needed. Approved sweeteners in the amounts used in whey are not a medical problem — which sweetener you want is a personal choice, not a quality difference. (Review: Android Health Clinic.)

Sources

Product page/label · whey scorecard v3.3 · medically reviewed by Android Health Clinic

Model version 3.3 · 21 October 2026 · version history

Partner: we earn a commission when you buy through our link. That doesn't change the score: partner products also get a C or D when the data calls for it.

How does the SupplementScore work?
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