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Frequently asked questions

How much protein is in each serving?

Each serving provides 24g of protein.

What type of protein blend is used?

It includes whey protein isolate, whey protein concentrate, and hydrolyzed whey protein.

Is this product gluten free?

Yes, it is gluten free.

Does it contain rBST?

The product is labeled rBST free.

What flavor is this protein powder?

This version is Extreme Milk Chocolate.

Is the large tub suitable for regular use?

Yes, the 5.64 lb size is a practical option for frequent shake routines.

Optimum Nutrition Gold Standard 100% Whey Protein Powder, Extreme Milk Chocolate, 5.64 lbs

Optimum Nutrition Gold Standard 100% Whey Protein Powder, Extreme Milk Chocolate, 5.64 lbs

Brand Optimum Nutrition

Independent U.S. retailer. Brand names and trademarks belong to their respective owners.

Regular price $99.99 USD
Regular price $123.15 USD Sale price $99.99 USD
Save 19% Sold out You save $23.16
  • Secure checkout
  • Ships in 1–2 business days
  • Canada shipping available
  • 30-day eligible U.S. returns
  • New condition

Shipping & delivery

  • Availability In stock — available to order online
  • SKU LFY-5F1B4788-01
  • Condition New
  • Processing 1–2 business days
  • U.S. shipping 5–7 business days after shipment · Rates calculated at checkout
  • Canada Rates & timing at checkout
  • Returns U.S. returns accepted within 30 days for eligible new, unopened items. Customer pays return shipping unless the item is damaged, defective, incorrect, or expired. Canadian orders are final sale.

View full shipping policy View full return policy

Optimum Nutrition Gold Standard 100% Whey Protein Powder in Extreme Milk Chocolate is a classic whey protein powder for everyday shake routines. With 24g of protein per serving and a smooth chocolate profile, it’s an easy fit for post-workout use or a convenient protein boost anytime.

Made with a blend of whey protein isolate, whey protein concentrate, and hydrolyzed whey protein, it delivers premium quality at a better price point.

Key Features

  • 24g of protein per serving
  • Blend of whey protein isolate, concentrate, and hydrolyzed whey protein
  • 5.5g of naturally occurring BCAAs
  • 1g of naturally occurring EAAs
  • Extreme Milk Chocolate flavor
  • Gluten free
  • rBST free
  • Large 5.64 lb size for regular use

Premium protein quality without the premium markup.

Limited quantities available.

Frequently asked questions

How much protein is in each serving?

Each serving provides 24g of protein.

What type of protein blend is used?

It includes whey protein isolate, whey protein concentrate, and hydrolyzed whey protein.

Is this product gluten free?

Yes, it is gluten free.

Does it contain rBST?

The product is labeled rBST free.

What flavor is this protein powder?

This version is Extreme Milk Chocolate.

Is the large tub suitable for regular use?

Yes, the 5.64 lb size is a practical option for frequent shake routines.

View full details