Optimum Nutrition

Serious Mass

Optimum Nutrition Serious Mass

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Overall

#1087 in

Protein Powder

according to Reddit Icon Reddit

Sentiment score38% positive
5
3
5
Last updated: Jun 29, 2026

Reddit Reviews

Reddit Iconakohlsmith
8 months ago

Avoid: * Naked Nutrition * Huel Once per week: * Garden of Life * Momentous 100% Plant Protein Occasionally: * MuscleMeds * Optimum Nutrition Serious Mass * Optimum Nutrition Gold Standard Protein Shake * Jocko Fuel * Vega * Quest * Orgain * Equip Foods * Plant Fusion * Ensure * Muscle Milk * KOS Better Choices for Daily Consumption: * Owyn * Transparent Labs * Optimum Nutrition Gold Standard 100% Whey * BSN * Momentus Whey Protein Isolate * Dymatize * Muscle Tech Only the last one - Muscle Tech - is listed as no limit on safe consumption.

8 months ago

negative. Optimum Gold Standard Protein Shake was orange, at above 150% of consumer report's level of concern for lead, and recommend to limit to 4 2/3 servings per week. The Optimum Gold Standard 100% Whey is what was green across the board and recommend 1 3/4 servings per day.

8 months ago

well I guess we can chalk up the disagreement to lack of specificity. "Optimum Gold Protein Powder" isn't listed in the consumer reports article (unless I am blind, which may in fact be the case). There are two Optimum products listed: * Optimum Nutrition Gold Standard Protein Shake - not recommended * Optimum Nutrition Gold Standard 100% Whey - recommended If I've missed one or miscategorized one I'll edit my post right away, but I believe I've got them listed correctly.

8 months ago

Careful - Optimum Nutrition Gold Standard Protein Shake is listed under "occasionally" and their Gold Standard 100% Whey is listed under "better choices for daily consumption". Kudos on calling out Muscle Tech as having no limit on safe consumption. I missed that and grouped it with the rest of the ones in the same category.

Reddit IconAmazing_Loquat280
6 months ago

Here’s the consumer reports study on which brands/lines actually have heavy metals: https://www.consumerreports.org/lead/protein-powders-and-shakes-contain-high-levels-of-lead-a4206364640/ In my experience optimum nutrition gold standard whey (double rich chocolate) has been good. No dangerous level of heavy metals per the report, not super high in sugar. If you take it with water it tastes like ass, but with milk (I use whole) it’s surprisingly pretty good. There’s a number of brands that didn’t appear to have the heavy metal problem, so if that’s a worry, consult the report (note, optimum nutrition’s serious mass protein *did* have more heavy metals, so check by product, not just by brand)

Reddit IconBig_Strike_9456
10 months ago

I used to use serious mass the vanilla flavor with lactose free milk. Taste just like a vanilla shake with no stomach issues.

Reddit IconCombitomi
3 months ago

Én a serious mass-t tolom, abból sztem az eper a legjobb

Reddit IconGlittering-Quiet9632
8 months ago

Actually Optimum Nutrition is NOT clean on the list. The Optimum Mass Powder was unusually high in arsenic, and not recommended to take daily. The Whey protein powder seemed to be better though. So hopefully that's what you've used

Reddit IconGreen_Olive1954
8 months ago

I take a half serving of optimum nutrition serious mass every day. I’m wondering if I’m still on the safe side? (One scoop)

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