Product Comparison: Ultimate Nutrition Prostar 100% Whey Protein vs Optimum Nutrition Gold Standard 100% Whey

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General Specifications
Ultimate Nutrition
Optimum Nutrition
Prostar 100% Whey Protein
Gold Standard 100% Whey
About the Product
Prostar® 100% Whey utilizes a proprietary micro and ultra-filtration process to ensure the highest quality whey protein powder. We pack the highest protein content per serving with 25 grams of our whey protein isolate, whey protein concentrate, and whey peptide blend. Prostar® 100% Whey mixes instantly to make the best protein shake or smoothie.
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
5.28 lbs.
5 lbs.
Serving Size
30 grams
30.4 grams
What customers say about "Key Specs"
Ultimate Nutrition Prostar 100% Whey Protein Powder - Low Carb
  • I have been taking protein now for years and this is truly one of the best I have ever used! I mix it in with my oatmeal every morning and has no problems with clumps or a chalky taste.
  • One of the most budget-friendly whey protein options has also an array of great flavors.
  • Cheapest straight protein/amino-acids powder I've ever seen. Works awesome and tastes great too!
  • Love this protein! it breaks down easy and never have problem with lumpiness.
  • Wow!! Really great taste, It's my new favorite protein. It's loaded with essentials. I thought the banana flavor was good, the chocolate is really amazing.
  • It wasn't too sweet, it had a decent, if a bit thinner consistency, at recommended ratios.
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
11.6 in.
10.8 in.
8.1 in.
8 in.
8.1 in.
8 in.
5.59 lbs.
5.6 lbs.
Amount Per Serving
25 grams
24 grams
2 grams
3 grams
1 gramms
1 gramms
Other Components
Sodium - 30mg
Cholesterol - 30mg, Sodium - 130mg, Sugars - 1g, Vitamin A, Vitamin С, Calcium, Iron
What customers say about "Amount Per Serving"
Ultimate Nutrition Prostar 100% Whey Protein Powder - Low Carb
  • Protein-wise, it's a pretty good deal. Less pricey than my favorite protein powder (Isopure Zero Vanilla) but with about the same protein content.
  • It also packs a good amount of protein, which is, of course, its goal. Just make sure not to blend it with excessive water, as it will feel incredibly diluted.
  • Have been using it for a couple of years, both in my home country and here. It's the best value for money reliable whey protein in the market i.e. max amount of protein per dollar.
  • Awesome protein/calorie ratio, excellent taste, easily dissolves, easy on the stomach, can't go wrong with this product.
  • Protein powders were found to have heavy metals and lots of other garbage in them (arsenic, cadmium, mercury, and lead, and toxins like bisphenol A (BPA).
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
6g BCAAs, Essential Amino Acids - 11.7 grams, Scoop Included, Free Shaker and Funnel, Industry-leading Mixability and Taste
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"
Ultimate Nutrition Prostar 100% Whey Protein Powder - Low Carb
  • I mix it in with my oatmeal every morning and has no problems with clumps or a chalky taste.
  • It mixes quite well - using a shaker cup, I rarely had clumps of any sort. My usual shake include 2tsp of fiber powder and 1tsp of creatine, and with these the shake comes out about right after about 5 minutes.
  • The product itself is very good. Great taste and mixes well into my protein shake every morning.
  • Great product but beware if you are allergic to milk. Since I am, I ended up giving them away
  • It tastes like soapy vanilla with some cookie powder. I tried making it with both water (cold and room temperature), and with milk. I even tried adding a banana or peanut butter.
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.
Other Information
Warranty / Certifications
Manufacturer Warranty
2 year(s)
GMP compliant, NSF Certified

Price History

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