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expiredFehmiP posted Dec 12, 2025 11:34 PM

Costco Members:Optimum Nutrition Gold Standard 100% Whey Protein Powder, Extreme Milk Chocolate, 5.64 lbs $49.99 B&M

$50

$65

23% off
Costco Wholesale
12 Comments
6.4K Views
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Deal Details
15$ OFF

https://www.costco.com/p/-/optimu...?langId=-1

Extreme Milk Chocolate or vanilla

IN STORE ONLY!
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Deal Details
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About the Poster
15$ OFF

https://www.costco.com/p/-/optimu...?langId=-1

Extreme Milk Chocolate or vanilla

IN STORE ONLY!

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12 Comments

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Dec 13, 2025 1:13 PM
368 Comments
Joined Jun 2017

This comment has been rated as unhelpful by Slickdeals users.

Dec 13, 2025 6:52 PM
4 Comments
Joined Aug 2018
TealPlant1247Dec 13, 2025 6:52 PM
4 Comments
when is this deal?
Dec 14, 2025 3:18 AM
1 Comments
Joined Nov 2019
Whatsthedealio23Dec 14, 2025 3:18 AM
1 Comments
Deal not active today. Costco in store says regular price.
Dec 14, 2025 7:20 PM
1 Comments
Joined Nov 2016
RubenG5280Dec 14, 2025 7:20 PM
1 Comments
Price is wrong.
Dec 15, 2025 2:22 AM
77 Comments
Joined Jul 2016
dealsandsteals123Dec 15, 2025 2:22 AM
77 Comments
Quote from jproeclipse :
Mmm lead
Not sure why you were downvoted. This is a real concern. They have found harmful amounts of lead in numerous protein products including this one.
Dec 15, 2025 5:13 AM
194 Comments
Joined Nov 2015
darren_fslDec 15, 2025 5:13 AM
194 Comments
Quote from dealsandsteals123 :

Not sure why you were downvoted. This is a real concern. They have found harmful amounts of lead in numerous protein products including this one.
The Consumer Reports investigation used Prop 65 limits which are 0.5 micrograms per day; FDA recommends limits significantly higher than that for children and pregnant women. The worst offender protein powders in the consumer reports list were plant based.
1
Dec 16, 2025 8:21 AM
1 Comments
Joined Nov 2020
zephyr834Dec 16, 2025 8:21 AM
1 Comments
Quote from darren_fsl :
The Consumer Reports investigation used Prop 65 limits which are 0.5 micrograms per day; FDA recommends limits significantly higher than that for children and pregnant women. The worst offender protein powders in the consumer reports list were plant based.
It's also because of cocoa; not the whey protein powder. If you are worried about lead, get the vanilla one.

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Dec 16, 2025 9:01 PM
232 Comments
Joined Nov 2013
PeterGJDec 16, 2025 9:01 PM
232 Comments
Quote from TealPlant1247 :
when is this deal?
looks like 12/22/25 – 01/19/26 according to theweeklyad.com
Dec 18, 2025 12:50 PM
1.3K Comments
Joined Nov 2009
drkaznDec 18, 2025 12:50 PM
1.3K Comments
Quote from jproeclipse :
Mmm lead
Quote from dealsandsteals123 :
Not sure why you were downvoted. This is a real concern. They have found harmful amounts of lead in numerous protein products including this one.
Quote from darren_fsl :
The Consumer Reports investigation used Prop 65 limits which are 0.5 micrograms per day; FDA recommends limits significantly higher than that for children and pregnant women. The worst offender protein powders in the consumer reports list were plant based.
This product was listed as the "Better Choices for Daily Consumption" category.
Dec 19, 2025 1:14 PM
31 Comments
Joined Feb 2019
DabutcherbearDec 19, 2025 1:14 PM
31 Comments
Sale price starts 12/22/25 with the new sales flyer.
Dec 23, 2025 2:09 AM
92 Comments
Joined Dec 2008
imonarckDec 23, 2025 2:09 AM
92 Comments
Yep deal started today. Picked up my protein for the year. Whey Days at Costco.
Pro
Jan 5, 2026 7:38 PM
1.3K Comments
Joined Nov 2014
Geckohands
Pro
Jan 5, 2026 7:38 PM
1.3K Comments
I am asking only those (who are genetically predisposed?) who actually avoid artificial sweeteners (diet sodas, Equal/Splenda/Sweet'N Low) in daily life because it actually tastes bad and not at all like sugar.

For those who have tried both brand's chocolate flavor (ON Extreme Milk Chocolate [costco.com] vs Kirkland Creamy Chocolate [costco.com]), can you comment on whether you can taste the artificial sweetener (sucralose)?

I mainly stick with Kirkland brand because I don't really taste the sucralose there. I'd prefer to avoid that artificial sweetener aftertaste that I've encountered in other products.

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