Dymatize ISO 100 Hydrolyzed Whey Protein Isolate 5lbs

The Purest Whey on the Market — Dymatize ISO 100 Hydrolyzed Whey Protein Isolate

ISO 100 delivers 25g of 100% hydrolyzed whey protein isolate per serving, with less than 1g of sugar and under 120 calories — making it the go-to protein for athletes tracking macros strictly or pushing through a cut. Unlike blended proteins that include concentrate, ISO 100 is filtered to remove excess lactose, carbs, and fat, leaving a fast-absorbing, lactose-free protein source with 5.5g of BCAAs built in. Bulldog Nutrition is an authorized Canadian and US retailer of Dymatize — every tub is 100% authentic and ships fast across Canada and the US.

Why Dymatize ISO 100?

• 25g protein per serving — from 100% hydrolyzed whey protein isolate, the fastest-absorbing protein form available
• <1g sugar and <0.5g fat per serving — one of the cleanest macro profiles of any protein powder on the market
• Lactose-free and virtually carb-free — filtered to remove excess lactose, carbohydrates, and fat
• 5.5g naturally occurring BCAAs per serving — including 2.6g leucine to trigger muscle protein synthesis
• Banned-substance tested — third-party verified for competitive athletes subject to testing
• Gluten-free formula — suitable for athletes avoiding gluten
• 6 flavours in stock — Gourmet Chocolate, Gourmet Vanilla, Fudge Brownie, Cinnamon Churro, and more

Who Is This For?

ISO 100 is built for serious athletes who track their macros precisely and can't afford carb or fat creep from their protein source. It's the preferred protein during a cut or body recomposition phase — every calorie is protein, with virtually no sugar, fat, or lactose. Athletes who've had digestive trouble with standard whey proteins often find ISO 100 the most comfortable option, thanks to the hydrolyzation process that pre-breaks down the protein and removes residual lactose. If you want the fastest-absorbing, highest-purity whey in a 5lb tub, this is it.

Who Is This NOT For?

• ✗ Hard-bulk athletes who need calorie-dense shakes — at ≤120 cal/serving, consider a mass gainer instead
• ✗ Anyone sensitive to artificial sweeteners — ISO 100 contains sucralose and/or stevia depending on flavour
• ✗ Vegans or vegetarians — this is a dairy-derived whey protein
• ✗ Budget-focused buyers — the purity premium over blended proteins is real; Gold Standard Whey is a more affordable alternative
• ✗ Under 18 — not intended for use by minors

What's In It?

ISO 100 is built around a single-source protein matrix: 100% hydrolyzed whey protein isolate. Hydrolyzation means the protein is pre-broken down using enzymes into smaller peptides, resulting in faster absorption than standard isolate or concentrate, and significantly reduced lactose content. This makes it ideal post-workout when rapid amino acid delivery matters most, and the first choice for athletes whose digestive systems struggle with conventional whey. Each serving provides 25g of protein, 5.5g of BCAAs (including 2.6g leucine), and under 120 calories with less than 1g of sugar and fat. The formula is banned-substance tested and gluten-free.

⚠️ 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 Canadian and US retailer of Dymatize — meaning every ISO 100 tub is sourced directly, 100% authentic, and never grey market or counterfeit. Dymatize has strong anti-diversion controls; buying from an authorized retailer is the only guarantee you're getting the genuine formula, not a knock-off or expired stock.

• ✓ 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
• ✓ 4.75/5 stars from 73+ verified customer reviews
• ✓ Ongoing support available — reach us anytime via email or live chat

Add to cart and fuel your next cut — 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?

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