CuratedFit
Optimum Nutrition
Gold Standard 100% Whey
A no-nonsense whey protein built for consistency. Clean formulation, reliable quality, straightforward ingredient list.
Protein & Nutrition
900g / 2.25kg
25g Protein per serving
WHAT IT IS
Gold Standard 100% Whey is a whey protein concentrate and isolate blend designed for post-workout and daily protein intake. Each serving delivers 24g of protein with a complete amino acid profile. It has been one of the most consistently formulated products in this category for over two decades.
WHO IT IS FOR
Anyone who trains regularly and wants a reliable, no-fuss protein source. Works equally well after a gym session, a run, or as fast protein on days when a proper meal is not an option.
INGREDIENT BREAKDOWN
Whey Protein Isolate & Concentrate
24g per serving
Primary protein source. Isolate is fast-absorbing and low lactose. Concentrate retains more natural milk fractions.
Leucine
~2.2g per serving
Key branched-chain amino acid. Triggers muscle protein synthesis at a meaningful levels.
Glutamine & Glutamic Acid
~4g per serving
Supports recovery and gut lining integrity. Naturally occurring from the whey source.
Soy Lecithin
Trace amount
Emulsifier for mixability. Present in very small amounts. Relevant for those with soy sensitivity.
Sucralose & Acesulfame K
Flavored variants only
Artificial sweeteners. Not present in unflavored version. See transparency note below.
Certifications
Informed Sport
Certified
Banned substance tested
Via Informed Sport
GMP Certified
Certified
Heavy metals tested
Not confirmed
BRCGS
Not confirmed
FSSC 22000
Not confirmed
CURATEDFIT STANDARD CHECK
No synthetic enhancers or undisclosed additives
No synthetic performance enhancers, undisclosed chemicals, or proprietary blends obscuring ingredient doses.
No proprietary blends
All ingredients and individual doses are declared on the label. Nothing is hidden behind a blend total.
Label accuracy
Protein content is consistent with third-party testing data. What is on the label is in the product.
No insect-derived ingredients
The formulation contains no insect-derived proteins, chitin, or insect-based additives. All protein sources are clearly identified.
Allergen declaration
Contains milk and soy. Clearly declared on the label. Suitable for lactose-tolerant individuals.
Sugar content
Approximately 1.5g sugar per serving. No significant added sugar. Within acceptable range for a protein supplement.
Country of manufacture
Manufactured in EU-compliant facilities. Production meets European food safety standards.
Artificial sweeteners present in flavored variants
Flavored versions contains sucralose and acesulfame potassium. Flagged for transparency. Unflavored version available and recommended.
Heavy metals, not independently confirmed
No published independent heavy metal test data available at time of review. Informed Sport certification provides partial coverage. CuratedFit recommends the brand to publish full contaminant testing.
Sustainability and sourcing
Whey sourced from conventional dairy. Grass-fed or sustainability certified sourcing not confirmed. No palm oil present.
TRANSPARENCY NOTE
The flavored variants of Gold Standard Whey contain sucralose and acesulfame potassium. These are artificial sweeteners with an established safety record. CuratedFit flags them here because you should know what is in what you are buying, not because we consider them a disqualifying factor.
If you prefer to avoid artificial sweeteners entirely, the unflavored version is available and contains no added sweeteners or flavorings.
This product contains soy lecithin in trace amounts. Individuals with soy allergies should exercise caution.
FREQUENTLY ASKED QUESTIONS
When is the best time to take Gold Standard Whey?
Within 30 to 60 minutes after training for recovery. It can also be used as a fast protein source at any point during the day when a whole food meal is not practical.
Is it suitable for beginners?
Yes. One of the most straightforward protein supplements available. No loading phase, no complicated dosing. One scoop in water or milk after training.
What is the difference between whey isolate and concentrate?
Isolate is further processed to remove most fat and lactose, resulting in higher protein percentage per gram. Concentrate retains more natural milk fractions. Gold uses both in its blend.
Is this product safe for drug-tested athletes?
Yes. Gold Standard Whey holds Informed Sports certification which tests for over 250 substances banned in professional sport.
Does it contain insect-derived ingredients?
No. All protein sources are whey-derived from conventional dairy. No insect proteins, chitin, or insect-based additives are present.
Last reviewed: May 2026 by
CuratedFit
Sources: ON label declaration, Informed Sport database, third-party testing records.
The Curated Edit - Monthly
Monthly picks, ingredient breakdowns, and honest reviews. Straight in your inbox. No hype, no filler.
No spam. Unsubscribe anytime.