Dymatize ISO 100 Hydrolyzed Whey Protein Isolate 5lbs

The Gold Standard of Whey Isolate — Dymatize ISO 100

Dymatize ISO 100 is one of the most trusted hydrolyzed whey protein isolates on the market — built for athletes who demand maximum protein with zero compromise on purity. With 25g of protein, 5.5g of BCAAs, and less than 1g of sugar per serving, ISO 100 delivers exactly what serious training requires, nothing more, nothing less.

With over 10 years serving customers across Canada and the US, Bulldog Nutrition is an authorized Dymatize retailer — every tub is 100% authentic, sourced directly, and never grey market.

Why Dymatize ISO 100?

• 25g hydrolyzed whey protein isolate per serving — 100% of protein from the purest, fastest-absorbing whey form available
• 5.5g BCAAs including 2.6g leucine — leucine is the key amino acid that triggers muscle protein synthesis post-training
• Under 120 calories and less than 1g of sugar — a lean macro profile purpose-built for cutting, recomping, or strict macro tracking
• Hydrolyzed formula — pre-digested into smaller peptides for faster uptake compared to standard isolate or concentrate
• Filtered to remove excess lactose, fat, carbs, and sugar — easier on digestion, even for those with mild lactose sensitivity
• 11 flavours including Cocoa Pebbles, Cinnamon Churro, and Birthday Cake Pebbles — consistently rated among the best-tasting isolates available
• Banned substance tested — formulated for athletes who require clean, verified supplementation

Who Is This For?

ISO 100 is built for serious athletes, bodybuilders, and anyone who prioritizes a lean, high-protein diet with tight macro control. Its hydrolyzed isolate formula absorbs faster than standard whey, making it ideal immediately post-workout when muscles need protein quickly. It is equally effective first thing in the morning or between meals for anyone cutting body fat while preserving lean muscle.

If you have outgrown basic protein blends and want the cleanest, fastest-absorbing whey available in Canada and the US, ISO 100 is the benchmark.

Who Is This NOT For?

• ✗ Those looking for a high-calorie mass-gaining protein — ISO 100 is lean by design; look at a mass gainer instead
• ✗ Anyone with a severe dairy allergy — contains milk and may contain soy
• ✗ Budget-first shoppers — ISO 100 is a premium isolate priced accordingly; not the cheapest option per gram
• ✗ Beginners who do not yet track macros — the lean profile is most valuable when you are counting protein intake precisely

What's In It?

ISO 100 uses 100% hydrolyzed whey protein isolate — processed through enzymatic hydrolysis that pre-digests protein chains into smaller peptides for rapid absorption. Unlike blends that pad formulas with cheaper concentrate, every gram of protein in ISO 100 comes from isolate, making it one of the highest-purity options on the market.

The filtration process strips out excess lactose, fat, carbohydrates, and sugar, leaving a concentrated amino acid profile built around 2.6g of leucine per serving — the threshold most research associates with maximal muscle protein synthesis activation. Every batch is banned substance tested, making it a trusted choice for competitive athletes.

⚠️ Contains milk and soy. May contain wheat. Always read the full label before use. These statements have not been evaluated by Health Canada or 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 Dymatize retailer — which means every tub of ISO 100 you order is sourced directly, arrives genuine, and ships fast to your door whether you are in Toronto, Calgary, or across the border.

• ✓ 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 faster recovery — shipped to Canada and the US.

Frequently Asked Questions

What is hydrolyzed whey protein isolate, and how is it different from regular whey?
Hydrolyzed whey protein isolate is whey that has been broken down through enzymatic hydrolysis into smaller peptide chains, making it absorb faster than both standard isolate and concentrate. Regular whey concentrate retains more fat, lactose, and carbs. Standard isolate removes most of these through filtration but remains intact. Hydrolyzed isolate — like ISO 100 — takes that one step further, pre-digesting the proteins so they enter your bloodstream faster, making it ideal for post-workout use when speed of absorption matters most.

Is Dymatize ISO 100 lactose-free?
ISO 100 is not completely lactose-free, but it is very low in lactose — the microfiltration process removes the vast majority of lactose from the whey. Most people with mild lactose sensitivity tolerate ISO 100 without issue, though individuals with a severe dairy allergy should consult a healthcare provider and check the full label before use, as it contains milk.

Is Dymatize ISO 100 banned substance tested?
Yes — every batch of Dymatize ISO 100 is banned substance tested, making it a popular choice among competitive athletes who are subject to drug testing. While "banned substance tested" does not guarantee zero contamination, it means the product has been screened for a broad panel of prohibited substances by a third-party lab.

How does Dymatize ISO 100 compare to Optimum Nutrition Gold Standard Whey?
Both are premium proteins, but they serve different needs. ISO 100 uses 100% hydrolyzed whey isolate — no concentrate at all — resulting in faster absorption, lower fat, lower carbs, and less than 1g of sugar per serving. Gold Standard uses a blend of isolate, concentrate, and some hydrolyzed whey, which makes it slightly less pure but more affordable per serving. ISO 100 is the better choice for cutting or strict macro tracking; Gold Standard is a solid all-rounder at a lower price point.

How many servings are in the Dymatize ISO 100 5lbs tub?
The 5lbs tub provides approximately 73 servings, making it one of the best value-per-serving options for athletes who use protein powder daily. Each serving is one scoop (approximately 31g) mixed with 5–6 oz of water or your preferred beverage.

What flavours does Dymatize ISO 100 5lbs come in?
The 5lbs tub is available in 11 flavours: Gourmet Chocolate, Gourmet Vanilla, Chocolate Peanut Butter, Cocoa Pebbles, Strawberry, Fruity Pebbles, Fudge Brownie, Cookies and Cream, Cinnamon Churro, Birthday Cake Pebbles, and Peanut Butter. Flavour availability may vary — check the product page for current in-stock options.

Is Dymatize ISO 100 available in Canada?
Yes — Bulldog Nutrition is an authorized Dymatize retailer shipping ISO 100 5lbs to all Canadian provinces as well as the United States. All products are sourced directly from Dymatize and are 100% authentic.

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.