Optimum Nutrition Gold Standard 100% Whey Protein 5lbs
The World's #1 Whey Protein — Optimum Nutrition Gold Standard 100% Whey
Gold Standard delivers 24g of protein, 5.5g of naturally occurring BCAAs, and just 120 calories per serving — built on whey isolate as the primary source for fast absorption and a lean macro profile. It's the top-selling protein powder in Canada and around the world for a reason: clean nutrition, proven results, and 7 flavours in stock at Bulldog Nutrition right now. As an authorized Canadian and US retailer of Optimum Nutrition, every tub is 100% authentic and ships fast across Canada and the US.
| Servings per tub | 74 |
| Protein per serving | 24g |
| Calories per serving | ~120 |
| BCAAs per serving | 5.5g naturally occurring |
| Protein source | Whey isolate (primary), concentrate & peptides |
| Sugar per serving | 1–3g (varies by flavour) |
| Flavours available | 7 in stock (Double Rich Chocolate, Cookies & Cream, Mocha Cappuccino + more) |
| Best for | Muscle recovery, lean gains, daily protein goals |
Why Gold Standard 100% Whey?
- 24g protein per serving — from a multi-stage whey blend led by isolate as the primary source
- 5.5g naturally occurring BCAAs per serving — including 2.7g leucine, the amino acid that triggers muscle protein synthesis
- 4g glutamine and glutamic acid per serving — supports recovery between sessions
- ~120 calories per serving — fits cleanly into a calorie deficit or a bulk
- 7 flavours in stock — Double Rich Chocolate, Cookies & Cream, Mocha Cappuccino, Vanilla Ice Cream, and more
- Banned-substance tested — NSF Certified for Sport on select flavours (Vanilla Ice Cream, Double Rich Chocolate)
- Contains lactase enzymes — helps limit digestive discomfort for lactose-sensitive users
Who Is This For?
Gold Standard is the go-to protein for anyone training consistently and looking to hit a daily protein target without a lot of extra calories, fat, or sugar. It works equally well post-workout for muscle recovery and as a mid-day shake to close a protein gap. Athletes in a calorie deficit appreciate the lean macro profile; those building muscle rely on it for the consistently high BCAA content per serving. If you want a well-rounded, well-tested protein that mixes cleanly in water, milk, or a blender recipe — Gold Standard delivers.
Who Is This NOT For?
- ✗ Vegans or vegetarians — Gold Standard is a dairy-derived whey protein
- ✗ Individuals with a severe dairy or lactose allergy — lactase enzymes are included, but this product contains milk
- ✗ Hard-bulk athletes who need very high calories per shake — at ~120 cal/serving, consider a mass gainer instead
- ✗ Anyone sensitive to artificial sweeteners — most flavours use sucralose and acesulfame-K
- ✗ Under 18 — not intended for use by minors
What's In It?
Gold Standard 100% Whey leads with whey protein isolate — the most filtered, highest-protein-density form of whey — blended with whey protein concentrate and hydrolyzed whey peptides for a fast-absorbing, multi-source protein matrix. Each serving provides 24g of protein, 5.5g of naturally occurring BCAAs (including 2.7g leucine), and 4g of glutamine and glutamic acid. Lactase enzymes are added to improve digestibility for those sensitive to lactose. The formula is free of artificial growth hormones and is gluten-free. Select flavours carry NSF Certified for Sport certification, and Health Canada has issued a Natural Product Number (NPN) confirming this product meets Canadian safety and quality standards.
⚠️ Contains milk and soy. Always read the full label before use. These statements have not been evaluated by Health Canada or the FDA for disease treatment or prevention.
Why Buy From Bulldog Nutrition?
With over 10 years serving supplement customers across Canada and the US, Bulldog Nutrition is an authorized retailer of Optimum Nutrition — meaning every Gold Standard tub is sourced directly, 100% authentic, and never grey market or counterfeit. Whether you're buying your first tub or stocking up for the season, you get genuine ON product backed by a decade of trusted service.
- ✓ Authorized retailer — authentic products only, never grey market or counterfeit
- ✓ Ships across Canada and the US — fast, reliable delivery to your door
- ✓ 10+ years in business — a track record you can rely on
- ✓ 4.85/5 stars from 48+ verified customer reviews
- ✓ Ongoing support available — reach us anytime via email or live chat
Add to cart and hit your daily protein goal — shipped fast to Canada and the US.
Shipping Information
Bulldog Nutrition ships across Canada and the United States. Most orders are processed within 1 to 2 business days.
Free shipping is available on eligible orders over $100. Please note that drink cases are excluded from free shipping due to size and weight.
During extreme hot or cold weather, heat-sensitive or cold-sensitive items may be affected in transit. For full details, please review our Shipping Policy.
Product & Site Disclaimer
Website information is provided for general informational purposes only. Product details, images, ingredients, and labels may change without notice, so customers should always review the actual product packaging received before use. For full details, please review our Product & Site Disclaimer.
Need Help?
For the fastest assistance, please use Live Chat on our website. You can also text SUPPORT to 1-833-497-3885 or use our Contact Us page for order, shipping, returns, and general support questions.