Optimum Nutrition

Gold Standard 100% Isolate Whey Protein powder

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Optimum Nutrition Gold Standard 100% Isolate Whey Protein powder
TL;DR: Purer isolate; trusted brand; less lactose.

Overall

#4 in

Protein Powder

according to Reddit Icon Reddit

User sentiment75% positive
136
18
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Last updated: Apr 9, 2026

Reddit Reviews

Reddit IconBlakeIsBlake 1.0
r/loseitProtein powder+Greek yogurt mousse is a LIE
6 months ago

I just finished my daily serving of fat free greek yogurt mixed with Optimum Nutrition Chocolate Whey Isolate and a smattering of blueberries. Just as delicious as ever! I have a friend who’s absolutely revolted by anything with sugar alternatives in it, but I personally don’t mind them at all. Maybe you’re just in the former camp?

Reddit Icondx30 1.0
r/nutritionProtein shakes of 25+g Protein & less than 130 calories?
about 1 month ago

honestly protein shakes at that calorie level are tough because you're basically asking for all protein and nothing else. your best bets are going to be isolate-based powders like Isopure Zero Carb or Optimum Nutrition Gold Standard 100% Isolate, which can get you 25g protein in like 110-120 calories. the trade-off is they're usually pretty thin and less creamy than concentrate-based shakes, but they mix fine with water or unsweetened almond milk. if you're doing these shakes for workout recovery or just general protein intake, remember you'll probably want to add some electrolytes back in since you're cutting everything else out. i use these drops called Salties that i just add to my shakes, keeps me from feeling depleted when i'm being strict with calories. beyond that, if you're really struggling to find something that hits those macros, you could also look at Premier Protein shakes which are pre-made and usually around 30g protein for 160 calories, then just accept it's slightly over your target. honestly the isolate powder route is gonna be your cleanest option though.

Reddit IconGlum-Highway-7403 1.0
r/Fitness_IndiaIf money is not an issue what protien should I get
24 days ago

Isopure or ON Gold Standard Isolate (gold packaging) or ON Platinum Hydro Whey (except for Isopure, both of the ON products aren’t available officially in India, but if you can get this from abroad or from trusted sources in India, some stores do sell imported supplements, then they’re absolutely worth the cost) I have used the Hydro whey, ISO 100, Isopure, and all of them are just great. Iso sensation is also a very good isolate, the protein ratio is crazy good (above 90%)

Reddit IconThat_Guy_Called_CERA 1.0
r/beginnerfitnessProtein powder
9 months ago

It really depends what country you’re in and what you can get your hands on. I personally prefer a WPI powder, International Protein is good but it can give you some mad shits, ON is okay, but I’m not a huge fan of how it tastes, Pure Supps I found are really good but I don’t know what countries they’re available in. If you have Optimum Nutrition, try their Gold Standard Isolate, I find that’s better on the stomach and tastes better than Standard Whey.

Reddit Iconbaejih 0.9
r/PHitnessProtein powder recommendations
8 months ago

Flavor-wise: Wheyl. Their line of whey concentrates have like a dozen flavors. I suggest buying 1lb bag na diff flavors if you're the type na mabilis maumay. I have a sensitive stomach but I haven't had issues so far, esp considering I take about 2~4 scoops per day. But if you're really particular about taking isolates due to potential GI issues, you can try ON. They don't have as many flavors (I mean, they do but hindi naman lahat available sa local retailers so limited lang din talaga choices) but they're easy on the gut. Double rich choco and french vanilla are good, safe flavors.

Reddit IconBlocker212 0.9
r/northernirelandBest value creatine and protein powder ?
9 months ago

Not ON, they've only been successfully sued once about 10 years ago for false claims in another product. I will say they aren't the best, but its the most conveniently available brand worldwide and gets the job done so I felt I should include it. Protein has came to cost a clean fortune now, so having a variety of brands you like to watch for sales is the best way. Looking at my orders page on MyProtein the same tub of Clear Whey Isolate I bought for £12.20 in 2021 is now retailing for £28! As I understand the initial impact of war in Ukraine caused supply disruption for a short period and the companies decided to permanently run wild with it. The \*£37\* Dymatize I recommended is also only £24 in America so there is a local mugging to it as well

Reddit IconMore_Ad2661 0.9
r/newzealandBest protein powder in NZ? Looking for healthy & tasty options
about 2 months ago

Been using Optimum Nutrition Isolate/Hydrolyzed and Dymatize Iso-100 for about 10 years now. Pretty reliable and I always get the chocolate flavour

Reddit IconStrict-Brick-5274 0.9
r/bikinitalkProtein Powder Suggestions
3 months ago

I have tried so many protein powders from cheaper own brand labels in the grocery store to the more expensive ones. The best one for flavour and absorbtion and textures: Optimum Nutrition - Hydrolyzed Whey or whey Isolate (great if you are lactose intolerant) Hands down. This brand has the smoothest shakes, and the flavour is not bad. I normally always get vanilla cause if I want I can add cinnamon or pumpkin spice, or gingerbread spices, or cacao to change it myself. It can be expensive, but it's worth it. All of the optimum range. Runner up: Applied Nutrition Hydrolyzed Whey - similar to above but still have a ever so slight grainy texture. Contenders Diet Smart Proteins - PhD The Quad Shake - The Protein Works Avoid: Impact Protein - grainy texture Protein Works Diet Whey/Whey - quite grainy texture, but lots of fun flavours Supermarket brands - grainy texture.

Reddit Icon1-2-sweet 0.3
r/CostcoHas Anyone Tried Gold Standard Whey?
3 months ago

Used to get this stuff till I found out it's choc full of lead. Currently researching into alternatives.

Reddit Icon2JZMX83 0.3
r/CostcoIs Kirkland protein powder decent? Or does the Optimum Nutrition brand taste better?
about 1 month ago

I didn't like it, upset my stomach. I stick with ON