Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
  1. Deal Image
Item 1 of 2
  1. Deal Image
  2. Deal Image
Item 1 of 2
expiredMerryPencil868 posted Apr 5, 2026 11:46 AM

Costco Members: 5.64-lbs Optimum Nutrition Gold 100% Whey Protein Powder (Chocolate)

$55

$69

20% off
& More + Free S&Hat Costco Wholesale
42 Comments
21.8K Views
Visit Retailer
Deal Details
Costco Wholesale has for its Members: ~5.5-lbs Optimum Nutrition Gold Standard 100% Whey Protein Powder for $54.99. Shipping is free.

Thanks to community members MerryPencil868 & SlickDyu for sharing this deal.

Available:Features:
  • 24G Protein
  • Protein Source: Blend of Whey Protein Isolate, Whey Protein Concentrate, & Hydrolyzed Whey Protein
  • 5.5g of Naturally Occurring BCAAs
  • 1g of Naturally Occurring EAAs
  • Gluten Free, rBST Free

Editor's Notes

Written by qwikwit | Staff
  • The sale is valid 4/5/26. While supplies last. Limit 2 per member.
  • If you don't have a Costco Warehouse Membership, you can sign-up here

Original Post

Written by MerryPencil868
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for its Members: ~5.5-lbs Optimum Nutrition Gold Standard 100% Whey Protein Powder for $54.99. Shipping is free.

Thanks to community members MerryPencil868 & SlickDyu for sharing this deal.

Available:Features:
  • 24G Protein
  • Protein Source: Blend of Whey Protein Isolate, Whey Protein Concentrate, & Hydrolyzed Whey Protein
  • 5.5g of Naturally Occurring BCAAs
  • 1g of Naturally Occurring EAAs
  • Gluten Free, rBST Free

Editor's Notes

Written by qwikwit | Staff
  • The sale is valid 4/5/26. While supplies last. Limit 2 per member.
  • If you don't have a Costco Warehouse Membership, you can sign-up here

Original Post

Written by MerryPencil868

Community Voting

Deal Score
+68
Good Deal
Visit Retailer

Top Comments

livingaboard
1.9KComments
114Reputation
I've used this protein powder for several years and I don't have an issue with the chocolate flavor. Let's not kid ourselves and pretend that all the protein shakes need to taste like 1000 calorie milkshakes. This is something where I put 7 ounces of water or so in shaker with a few ice cubes and it takes me like five seconds to drink it. So I'm not tasting it that long.
Go to Comment

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

42 Comments

Sign up for a Slickdeals account to remove this ad.

Apr 5, 2026 4:27 PM
1.5K Comments
Joined May 2010
MoneymitchApr 5, 2026 4:27 PM
1.5K Comments
It's never for vanilla
1
4
Apr 5, 2026 4:29 PM
4 Comments
Joined Feb 2026
WittyTest1471Apr 5, 2026 4:29 PM
4 Comments
I have this flavor. Absolutely nasty.
3
Apr 5, 2026 4:38 PM
400 Comments
Joined Aug 2006
dadoc04Apr 5, 2026 4:38 PM
400 Comments
Quote from Moneymitch :
It's never for vanilla
Lmaooo came to say the exact same
2
Apr 5, 2026 4:46 PM
299 Comments
Joined Dec 2018
SlickDyuApr 5, 2026 4:46 PM
299 Comments

Our community has rated this post as helpful. If you agree, why not thank SlickDyu

Quote from dadoc04 :
Lmaooo came to say the exact same
If you search for the vanilla flavor, it also has the $14 off savings. Op mentioned it in the description.
https://www.costco.com/p/-/optimu...?langId=-1
2
Apr 5, 2026 4:51 PM
2.8K Comments
Joined Aug 2003
HellyeaApr 5, 2026 4:51 PM
2.8K Comments
Never tried this brand. Usually get organize orgain. I don't like the orgain vanilla and prefer the chocolate. How do these taste?
Apr 5, 2026 4:51 PM
2.8K Comments
Joined Aug 2003
HellyeaApr 5, 2026 4:51 PM
2.8K Comments
Quote from Moneymitch :
It's never for vanilla
Vanilla is also available same price
Apr 5, 2026 5:03 PM
1.9K Comments
Joined Sep 2005
livingaboardApr 5, 2026 5:03 PM
1.9K Comments
Quote from Hellyea :
Never tried this brand. Usually get organize orgain. I don't like the orgain vanilla and prefer the chocolate. How do these taste?
I've used this protein powder for several years and I don't have an issue with the chocolate flavor. Let's not kid ourselves and pretend that all the protein shakes need to taste like 1000 calorie milkshakes. This is something where I put 7 ounces of water or so in shaker with a few ice cubes and it takes me like five seconds to drink it. So I'm not tasting it that long.

Sign up for a Slickdeals account to remove this ad.

Apr 5, 2026 5:36 PM
762 Comments
Joined Jun 2008
briannawApr 5, 2026 5:36 PM
762 Comments
I'm tired of buying crappy vanilla flavors, trying to find a good one. Although this one seems to get good reviews, so I wonder if I should try it. Any thoughts on the vanilla flavor?
Apr 5, 2026 5:56 PM
4 Comments
Joined Aug 2020
EagerSnow733Apr 5, 2026 5:56 PM
4 Comments
Quote from WittyTest1471 :
I have this flavor. Absolutely nasty.
It really is. The savings savings of this vs dymatize isn't worth it for the awful fake chocolate flavor
Apr 5, 2026 6:00 PM
1 Comments
Joined Mar 2022
FabulousLlama1095Apr 5, 2026 6:00 PM
1 Comments
Quote from WittyTest1471 :
I have this flavor. Absolutely nasty.
I absolutely disagree this is the only flavor I've liked in any brand
Apr 5, 2026 6:11 PM
111 Comments
Joined Nov 2016
RogerP5065Apr 5, 2026 6:11 PM
111 Comments
Is this just for today? $4 cheaper in store
Apr 5, 2026 6:20 PM
307 Comments
Joined Apr 2014
supertek75Apr 5, 2026 6:20 PM
307 Comments
Quote from RogerP5065 :
Is this just for today? $4 cheaper in store
Today only. Shows up as $69 in store (via app), but all Costcos are closed for Easter.
Apr 5, 2026 6:29 PM
4 Comments
Joined Feb 2026
WittyTest1471Apr 5, 2026 6:29 PM
4 Comments
Quote from FabulousLlama1095 :
I absolutely disagree this is the only flavor I've liked in any brand
I've had batches that differ maybe the case
Apr 5, 2026 6:29 PM
107 Comments
Joined Apr 2009
cdtankApr 5, 2026 6:29 PM
107 Comments
Orgain is also on discount for today only it looks like. I wanted to switch and try whey, ive been doing the orgain for many years. I do like the chocolate taste and wanted to try this whey one but when i looked i saw orgaian... why switch when i know i will like it! Cheers.

Sign up for a Slickdeals account to remove this ad.

Apr 5, 2026 6:31 PM
109 Comments
Joined Jun 2021
BrightSummer9658Apr 5, 2026 6:31 PM
109 Comments
Never the double chocolate, the best flavor
2

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

Related Searches

Health & BeautyProtein Powder & ShakesOptimum NutritionCostco Wholesale

Popular Deals

See All
Found by BBQchicken
Today 11:36 AM
Forum Thread
4-Pack 12-Oz C4 Performance Energy Drink (Frozen Bomb) $4.75 w/ S&S + Free Shipping w/ Prime or on orders over $35$4.75$8.99
47% off
0
Found by itsamazeling
Yesterday 1:18 AM
Forum Thread
Fisher-Price Laugh & Learn 2-in-1 Vacuum w/ Duster $17.59 + Free Shipping w/ Prime or on $35+$18$27
33% off
0
Found by slimwantsfat
Jul 24, 2026 3:08 PM
Forum Thread
Lavazza caffe espeesso 100% arabica medium whole bean (2.2lb) $15$15$23
34% off
2
Found by rickprime
Today 3:05 PM
Forum Thread
The Callisto Protocol (PCDD) Steam $6.89$6.89$60
88% off
6
Found by Skillful_Pickle
Today 5:02 PM
Forum Thread
Baseus 67W Laptop Power Bank 10000mAh with Built in Dual Cables $25.29 & More + FS w/ Prime or orders $35+$25$70
64% off
2

Trending Deals

See All
Found by TattyBear
Today 1:51 PM
Forum Thread
New Xfinity Internet Customers: 5-Yr Price Service: 500 Mbps $45/Month, 1 Gig $50/Month & More (Valid thru 8/24)
18
Found by Ruyi
Today 4:10 PM
Forum Thread
BOGO - Buy Bosch 18 -Volt 1 -Pack Battery and Charger ( New 8 Ah Lithium-ion ) | GXS18V-27N18X $199 Get Free Tool$199$249
20% off
4
Found by LolaBunny21
Today 5:18 PM
Forum Thread
Scarlet Darkness Women's Corset Milkmaid Dress w/ Adjustable Straps (Various) $12.49 + Free Shipping w/ Prime or on $35+$12$30
60% off
0
Found by itsamazeling
Today 4:40 PM
Forum Thread
adidas Men's Lite Racer Adapt 7.0 Wide Shoe (Core Black/Grey Six/Core Black) $21 + Free Shipping$21$70
70% off
2
Found by Eragorn
Today 4:38 PM
Forum Thread
Redragon M616 RGB Wired Gaming Mouse w/ 10000 DPI, 6 Programmable Buttons $5 + Free Shipping$5.00$17
70% off
0