Tracking 702 products across 12 US retailers
Optimum Nutrition

Gold Standard 100% Isolate

Smooth Vanilla · 5 lb

25gPer serving
71Servings
30Value score
Tracked at 4 retailersValue score 30

Compare prices

Trust-gated · verified within 24h
AmazonLast seen recently · tracked, not real-time verified
$79.99*
Verifying…

*Tracked price, last observed at Amazon recently. Refresh due - pulling latest… We only display a confirmed current price once a fresh scrape clears the trust gate (verified within 24h).

Price history

Last 14 days
Best verified price -
Awaiting price history…

Why this product

Optimum Nutrition Gold Standard 100% Isolate in Smooth Vanilla delivers 25 g of protein per serving across 71 servings per container, which works out to 1775 g of total protein per tub. Each serving is 32 g of powder, mixed into water or milk.

Its Value Score is 30 - a Value Score under 70 is below the category average - you are likely paying a brand or convenience premium versus the leaders. The score is a normalised measure of grams of protein per dollar versus the rest of the catalog.

Within the Whey Isolate (WPI) category specifically, this product ranks #30 of 78 (top 38%) by value. The category average Value Score is 31, so this product is below the typical whey isolate (wpi) on cost-per-gram efficiency.

Best use case: Ideal post-workout: 90%+ protein content with minimal carbs, fats and lactose for fast absorption.

When to consider alternatives: If you tolerate dairy fine and want better cost-per-gram, a whey blend usually wins on value. The related products below are ranked the same way and let you compare side-by-side.

We compare the live prices above across the 4 retailers that carries it. The trust gate means you only see a $ amount when we have a verified scrape from that retailer within the last 24 hours - no fake "was/now" prices, no bait pricing, no affiliate-padded numbers.

Specs

Protein per serving25 g
Servings per container71
Total protein per container1775 g
Serving size32 g
Net weight5 lb (2270 g)
TypeWhey Isolate (WPI)
Brand originUS
Suggested useIdeal post-workout: 90%+ protein content with minimal carbs, fats and lactose for fast absorption.

Frequently asked questions

Is Optimum Nutrition Gold Standard 100% Isolate good value?

Optimum Nutrition Gold Standard 100% Isolate scores 30 on our Value Score (grams of protein per dollar, normalised 0–100). That is below average value - a Value Score under 70 is below the category average - you are likely paying a brand or convenience premium versus the leaders. Within Whey Isolate (WPI) specifically, it ranks #30 of 78 (top 38%, category average score 31).

How many servings in Optimum Nutrition Gold Standard 100% Isolate?

Optimum Nutrition Gold Standard 100% Isolate contains 71 servings per container, with 25 g of protein per serving (serving size 32 g). That works out to 1775 g of total protein per container.

What does Optimum Nutrition Gold Standard 100% Isolate (Smooth Vanilla) taste like?

This listing is the Smooth Vanilla variant of Optimum Nutrition Gold Standard 100% Isolate. Taste is subjective and varies by batch and mixer, but Optimum Nutrition is generally well-regarded for flavor in the whey isolate (wpi) category. If Smooth Vanilla is not your preference, check the related-products section below for other flavors of the same product.

Where to buy Optimum Nutrition Gold Standard 100% Isolate cheapest?

We track 4 retailers for Optimum Nutrition Gold Standard 100% Isolate. Check the live price table above for current availability - we only show prices we have verified within the last 24 hours.

Optimum Nutrition Gold Standard 100% Isolate vs other Whey Isolate (WPI) options?

Ideal post-workout: 90%+ protein content with minimal carbs, fats and lactose for fast absorption. If you tolerate dairy fine and want better cost-per-gram, a whey blend usually wins on value. Use the comparison table above and the related products below to weigh Optimum Nutrition Gold Standard 100% Isolate against alternatives - we rank purely by grams of protein per dollar, with no paid placement.