Product Comparison: Dymatize ISO 100 vs Optimum Nutrition Gold Standard 100% Whey

General Specifications
Optimum Nutrition
ISO 100
Gold Standard 100% Whey
About the Product
ISO 100 is simply muscle-building fuel. Each serving contains 25 grams of protein and 5.5g of BCAAs including 2.7g of L-Leucine. Known worldwide for quality, taste and purity, ISO100 is produced to our highest quality standards. ISO100 is formulated using a cross-flow micro filtration, multi-step purification process that preserves important muscle-building protein fractions while removing excess carbohydrates, fat, lactose and cholesterol.
OPTIMUM NUTRITION'S GOLD STANDARD 100% Whey uses pure Whey Protein Isolates as the primary ingredient. Combined with ultra-filtered whey protein concentrate, each serving provides 24 grams of all-whey protein and 5.5 grams of naturally occurring Branched Chain Amino Acids (BCAAs) which are prized by athletes for their muscle building qualities.
Key Specs
1.6 lbs.
5 lbs.
Serving Size
30 grams
30.4 grams
Gourmet Chocolate
What customers say about "Key Specs"
Dymatize ISO 100 Whey Protein Powder with 25g of Hydrolyzed 100% Whey Isolate
  • Perfect protein for maximum growth and recovery.
  • This product is by far one of the best whey isolate protein powder that I've ever taken.
  • You will be surprised at how this product makes your muscles leaner and your strength will improve gradually as well.
  • If you are planning to purchase this product, I would highly recommend the Gourmet Chocolate flavor as it doesn't taste too generic and it goes down easy.
  • This product surpassed my expectations by a mile, I thought it would be inferior to ON's Gold Standard Whey, but it turned out to be significantly better in my opinion.
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate, 5 Pound
  • Quality product, few ingredients. High percentage by volume of protein per serving.
  • The price vs volume vs protein per serving ratio can't be beat. Very happy with my purchase.
  • This product has the best volume to price ratio I could find. It tastes great, and it really seems to help.
  • Optimum Nutrition definitely manufactures quality supplements and this is probably their highest volume product.
  • Double chocolate flavour taste really bad!! Please don’t buy it. It used to taste very good but I don’t know what happened.
Size & Weight
9 in.
10.8 in.
5 in.
8 in.
5 in.
8 in.
1.7 lbs.
5.6 lbs.
Amount Per Serving
25 grams
24 grams
1 grams
3 grams
0 gramms
1 gramms
Other Components
Cholesterol - 10mg, Sodium - 160mg, Potassium, Sugars - 1g
Cholesterol - 30mg, Sodium - 130mg, Sugars - 1g, Vitamin A, Vitamin С, Calcium, Iron
What customers say about "Amount Per Serving"
Dymatize ISO 100 Whey Protein Powder with 25g of Hydrolyzed 100% Whey Isolate
  • My mind was blown. It legit tastes like the halo top birthday cake ice cream! With less than 1g of sugar and 25g of protein. I love it!
  • I need a high protein, low carb, 1 scoop powder, and this one checks all of those boxes.
  • You want a product that is low in calories and one that doesn't bloat you, this product only has 110 calories per serving and it doesn't bloat you at all.
  • Best part about the Dymatize product is the distinct lack of carbs, cholesterol, fat and sugar. 25 grams of protein per scoop.
  • With 25 grams of protein per serving, it has a great cost to volume ratio imo.
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate, 5 Pound
  • This whey contains little else in terms of sugar or carbohydrates so you know there are no fillers.
  • This protein, along with physical activity, will help to stave off muscle loss. Their article made good sense, so I am following their advice: eat lightly and eat protein along with enough fiber.
  • This product is 100% whey from isolates so if you're trying to hit a protein goal while keeping your daily caloric intake down, this is for you.
  • It has worked wonderfully so far allowing me to put on some mass without gaining the fat of other protein supplements. I just ordered another batch and I am a proud user of ON Whey!!
  • If anyone has recommendations on a good protein shake that will give loads of energy for pre-workout let me know.
Box Type
Contains Soy
Contains Milk
Gluten & Lactose Free
Super fast digesting, Banned substance tested
Whey Protein Isolate (WPI) Main Ingredient, Over 4 Grams of Glutamine & Glutamic Acid in Each Serving, More Than 5 Grams of the Naturally Occurring BCAAs, The "Gold Standard" for Protein Quality
What customers say about "Features"
Dymatize ISO 100 Whey Protein Powder with 25g of Hydrolyzed 100% Whey Isolate
  • It mixes easily in a shaker bottle and it provides me with my low calorie goal of 35gm of protein a day.
  • It mixes almost instantly without any lumps and powder residue at the bottom of your shaker bottle.
  • In comparison to ON's Gold Standard Whey, this product mixes way better than ON.
  • Mixes very well in water, and serving sizes aren't huge as some brands are.
  • The flavor is fantastic, and it mixes super well.
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate, 5 Pound
  • Taste is good, not with water but fat free milk
  • It mixes extremely well (I use milk mainly) and when mixed with other powders, it continued to mix well (I add extra probiotics and stuff for my joints).
  • In milk it's just about as good as a chocolate milkshake. I have to resist the urge to drink more just for the enjoyment. In water it's not quite that good but still very tasty.
  • Mixes really well and quickly with anything including a stick.
  • Everything in the box was in perfect condition except for the gold standard so that means they put it there all damaged in the first place.
Warranty / Certifications
GMP compliant, NSF Certified
Manufacturer Warranty
2 year(s)
Other Information

Price History

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