Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
forum threadFehmiP posted Dec 12, 2025 11:34 PM
  1. Deal Image
Item 1 of 3
  1. Deal Image
  2. Deal Image
  3. Deal Image
Item 1 of 3
forum threadFehmiP 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 4,685 Views
Get Deal at Retailer
Good Deal
Save
Share
Deal Details
15$ OFF

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

Extreme Milk Chocolate or vanilla

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

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

Extreme Milk Chocolate or vanilla

IN STORE ONLY!

Community Voting

Deal Score
+3
Good Deal
Get Deal at Retailer

Leave a Comment

Unregistered (You)

12 Comments

Sign up for a Slickdeals account to remove this ad.

Dec 13, 2025 01:13 PM
244 Posts
Joined Jun 2017

This comment has been rated as unhelpful by Slickdeals users.

Dec 13, 2025 06:52 PM
2 Posts
Joined Aug 2018
TealPlant1247Dec 13, 2025 06:52 PM
2 Posts
when is this deal?
Dec 14, 2025 03:18 AM
1 Posts
Joined Nov 2019
Whatsthedealio23Dec 14, 2025 03:18 AM
1 Posts
Deal not active today. Costco in store says regular price.
Dec 14, 2025 07:20 PM
1 Posts
Joined Nov 2016
RubenG5280Dec 14, 2025 07:20 PM
1 Posts
Price is wrong.
Dec 15, 2025 02:22 AM
63 Posts
Joined Jul 2016
dealsandsteals123Dec 15, 2025 02:22 AM
63 Posts
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 05:13 AM
172 Posts
Joined Nov 2015
darren_fslDec 15, 2025 05:13 AM
172 Posts
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 08:21 AM
1 Posts
Joined Nov 2020
zephyr834Dec 16, 2025 08:21 AM
1 Posts
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.

Sign up for a Slickdeals account to remove this ad.

Dec 16, 2025 09:01 PM
223 Posts
Joined Nov 2013
PeterGJDec 16, 2025 09:01 PM
223 Posts
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
1,166 Posts
Joined Nov 2009
drkaznDec 18, 2025 12:50 PM
1,166 Posts
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 01:14 PM
31 Posts
Joined Feb 2019
DabutcherbearDec 19, 2025 01:14 PM
31 Posts
Sale price starts 12/22/25 with the new sales flyer.
Dec 23, 2025 02:09 AM
91 Posts
Joined Dec 2008
imonarckDec 23, 2025 02:09 AM
91 Posts
Yep deal started today. Picked up my protein for the year. Whey Days at Costco.
Pro
Jan 05, 2026 07:38 PM
1,112 Posts
Joined Nov 2014
Geckohands
Pro
Jan 05, 2026 07:38 PM
1,112 Posts
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.

Leave a Comment

Unregistered (You)

Related Searches

Health & BeautyProtein Powder & ShakesOccasionsGreen MondayOptimum NutritionCostco Wholesale

Popular Deals

See All
Found by Gregory00
Yesterday 06:16 AM
20% off Milwaukee batteries, tools on Woot
1
Found by pennysave
Today 02:42 AM
$87$10214% off$86.86*: Vevor 18" x 36" x 34" Stainless Steel Food Prep Table @ Amazon
0
Found by babgaly
Today 07:28 AM
$4.99$1668% offKopesmsy 3.15" 3D Color Crystal Ball Lamp (Love wooden base) $4.99 + Free Shipping w/ Prime or on $35+
0
Found by phoinix
Today 07:37 AM
$125$21040% off$124.99 | Magic: The Gathering | Teenage Mutant Ninja Turtles - Play Booster Box | 30 Packs at Amazon
0
Found by Hypothalamus
Yesterday 08:20 PM
$17$7075% offIn Store Purchase Only: SKIL PWR CORE 12 12-Volt Brushless Variable Speed Oscillating Multi-Tool $17.49
2

Trending Deals

See All
Found by Dr.W
Today 06:00 AM
$50$11054% offAnker MagSafe 3-in-1 Qi2 15W MagGo Foldable Wireless Charging Station $49.99
3
Found by phoinix
Today 07:06 AM
$30$5040% off$29.99 | Cuisinart Mandoline Slicer (Black) at Amazon
0
Found by hocuspocusblade
Today 01:45 AM
$3.19Ocean Spray® Cran x Dragon Fruit™ Juice Drink, 60 Fl Oz Bottle~$3.19 With S&S @ Amazon
1
Found by phoinix
Yesterday 09:18 PM
$30$10370% off[YMMV, AC] $29.94 | 3.4-Oz Mercedes Benz Man Sign Your Attitude - Eau de Toilette for Men at Amazon
11
Found by SUCHaDEAL
Today 01:26 AM
REESE'S FAST BREAK Peanut Butter Nougat Candy Bars, 1.8 oz (Pack of 18) $12.08 S&S AMAZON
0