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Optimum 100% WHEY GOLD STANDARD, 5lb

Sale Sale
Original price $124.95 CAD
Original price $124.95 CAD - Original price $124.95 CAD
Original price $124.95 CAD
Current price $99.99 CAD
$99.99 CAD - $99.99 CAD
Current price $99.99 CAD
Flavour: Chocolate Peanut Butter

Optimum Nutrition 100% Whey Gold Standard 5lb

Unlock Peak Performance with the World's Best Known Protein.

  • Trusted Excellence: Backed by the world's most trusted sports nutrition brand.
  • Ultimate Protein Source: Powered by Whey Protein Isolates for maximum effectiveness.
  • Essential Amino Acids: Contains 5.2 grams of BCAAs for muscle recovery and growth.
  • Optimal Support: Provides 4 grams of Glutamine and Glutamic Acid for enhanced performance.
  • Instant Mixing: Instantized formula ensures easy mixing with just a glass and spoon.
Shipping & Returns

Free Shipping on Orders over $99*: Canada Post, Purolator, UPS delivery, Couriers Plus - Add $99 or more worth of items into your cart (before taxes, fees & after discounts/promo codes), smaller orders are charged a flat rate $9.95*.

Rural/Remote areas: Certain locations, which are determined by our shipping providers, do require additional shipping charges. These areas do not qualify for flat rate shipping or free shipping. If this is the case, we will email you before shipping your order.

Please review our Shipping Policies for complete details.

Natural Product Number Info

In Canada, all natural products must be issued a product license by Health Canada. This product number is known as a Natural Product Number or NPN. Products with this license have been assessed by Health Canada and have been found to be safe, effective and of high quality under their recommended conditions of use.

The NPN for this product is: 80039597, 80039346, 80039310, 80039012, 80037844


The products and the claims made about specific products on or through this site have not been evaluated by or the Canadian Food Inspection Agency (CFIA) and the Department of Health Canada (Health Canada) and are not approved to diagnose, treat, cure or prevent disease. The information provided on this site or any information contained on or in any product label or packaging is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional. You should consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. is not responsible for any statements or claims that various manufacturers make about their products or the general information provided for each product on this website. We cannot be held responsible for typographical errors, product formulation or label changes. Please consult with your own physician or health care practitioner regarding the suggestions and recommendations made on and especially before using any product sold on this website.

Source Certified

Products available at are sourced directly from brands or authorized distributors in Canada or the United States. Products are stored and shipped directly from our climate-controlled warehouse. does not allow 3rd-party resellers on its website.

Experience Optimum True Strength

At Optimum Nutrition (ON), we understand that true strength is a relentless journey. We never settle; we never compromise. Our commitment to quality is unwavering, from sourcing the finest raw materials to employing cutting-edge manufacturing processes. Just as you push boundaries in your workouts, we push the limits of excellence to redefine industry standards and guarantee optimum results.

Unrivaled Quality

Gold Standard 100% Whey is synonymous with purity. Each serving delivers 24 grams of fast-absorbing whey protein isolate, meticulously crafted to minimize fat, cholesterol, lactose, and unnecessary fillers. It's the benchmark against which all other proteins are measured, setting a new standard for uncompromising quality and performance.

Nutritional profile may vary with flavour.

Customer Reviews

Based on 30 reviews
Avi k.

Price is good. Quality of protein powder is the best. Taste is great.

Right product, speedy delivery

This was the first time I ordered from Supplement Source, so I wasn't sure what to expect . Expectations met! They sent the the right product at a good price in a short amount of time, with a bonus item included. I'll order again for sure


Was happy with the price and prompt delivery of the order as well as for the sweet gesture of sending one of the protein cookies as a gift. Really appreciate it.