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MerryPencil868 24.2K Views
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
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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
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Top Comments

livingaboard
2KComments
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.
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42 Comments

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Pro
Apr 5, 2026 6:43 PM
1.2K Comments
Joined Apr 2014
wwphil
Pro
Apr 5, 2026 6:43 PM
1.2K Comments
how does it compare to the ascent protein powder, which will be discounted to $38 from April 6th:
https://www.costco.com/p/-/ascent.../100985271
Apr 5, 2026 6:50 PM
459 Comments
Joined Aug 2014
RockGeorgeApr 5, 2026 6:50 PM
459 Comments
Quote from wwphil View quoted comment :
how does it compare to the ascent protein powder, which will be discounted to $38 from April 6th:https://www.costco.com/p/-/ascent.../100985271
Where does it say
Pro
Apr 5, 2026 6:51 PM
1.2K Comments
Joined Apr 2014
wwphil
Pro
Apr 5, 2026 6:51 PM
1.2K Comments
Quote from RockGeorge View quoted comment :
Where does it say
costco ads in mail
Apr 5, 2026 6:53 PM
21 Comments
Joined Jun 2024
rumple4skin.Apr 5, 2026 6:53 PM
21 Comments
Quote from briannaw View quoted comment :
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?
I really like the vanilla flavor for this brand.
Apr 5, 2026 7:07 PM
743 Comments
Joined Jul 2004
grey_thoughtsApr 5, 2026 7:07 PM
743 Comments
Quote from wwphil View quoted comment :
how does it compare to the ascent protein powder, which will be discounted to $38 from April 6th:
https://www.costco.com/p/-/ascent.../100985271
Ascent uses natural ingredients, like stevia as a sweetener instead of sucralose in the On brand protein. If both are on sale, I'd rather choose Ascent.
1
Pro
Apr 5, 2026 7:09 PM
1.2K Comments
Joined Apr 2014
wwphil
Pro
Apr 5, 2026 7:09 PM
1.2K Comments
i suspect they roll out this one-day promotion in order to get ahead of the upcoming ascent protein powder deal starting tomorrow Apirl 6th.
Pro
Apr 5, 2026 7:09 PM
1.2K Comments
Joined Apr 2014
wwphil
Pro
Apr 5, 2026 7:09 PM
1.2K Comments
Quote from grey_thoughts View quoted comment :
Ascent uses natural ingredients, like stevia as a sweetener instead of sucralose in the On brand protein. If both are on sale, I'd rather choose Ascent.
i suspect they roll out this one-day promotion in order to get ahead of the upcoming ascent protein powder deal starting tomorrow Apirl 6th.

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Apr 5, 2026 7:35 PM
571 Comments
Joined Aug 2011
Sturmgeist781Apr 5, 2026 7:35 PM
571 Comments
Bunch of whiny babies in this thread who probably get their protein from soy.

Good price OP TY. This and the Kirkland Brand whey work just fine. Even for the DYEL's.
1
4
Apr 5, 2026 8:05 PM
7 Comments
Joined Feb 2013
JoseC6632Apr 5, 2026 8:05 PM
7 Comments
good deal?
Apr 5, 2026 8:19 PM
201 Comments
Joined Dec 2003
shareef777Apr 5, 2026 8:19 PM
201 Comments
Currently using this from the last deal, but found the Kirkland branded one is almost identical and regular everyday price is $50. The only caveat to the Kirkland bag is it doesn't include the self seal lock on the bag so takes a bit to seal it properly.
Pro
Apr 5, 2026 8:36 PM
509 Comments
Joined Nov 2011
gudetamasan
Pro
Apr 5, 2026 8:36 PM
509 Comments
Quote from rumple4skin. View quoted comment :
I really like the vanilla flavor for this brand.
second the vanilla flavor from ON, really good in smoothies
Apr 5, 2026 8:45 PM
557 Comments
Joined Oct 2014
G1GRANDEURApr 5, 2026 8:45 PM
557 Comments
Quote from Sturmgeist781 View quoted comment :
Good price OP TY. This and the Kirkland Brand whey work just fine. Even for the DYEL's.
I have been using ON for a long time, how is the Kirkland brand? I was going to try it after my last bag.
1
Apr 5, 2026 9:05 PM
372 Comments
Joined Jun 2017
jproeclipseApr 5, 2026 9:05 PM
372 Comments
Sucralose HARD PASS
3
Apr 5, 2026 9:06 PM
402 Comments
Joined May 2011
ThreshApr 5, 2026 9:06 PM
402 Comments
Ive been looking for a new protein powder lately since I recently started lifting. Had been using the wife's "reject" powders from long ago. Came to the near end of the bag of Shakeology cookies and cream, and had to admit it actually tasted quite good. I ended up buying some 2 lb tubs of ON extreme milk chocolate and double rich chocolate, as well as some Ghost Nutter Butter. Hands down winner is Ghost, taste just like a NB, has little bits of cookie in it which I'm not a super huge fan of, but not terrible... But it is the most expensive of the new powders.
The ONs were interesting. Dissolved super easy in water which is nice. No gritty texture with minimal shaking. Flavor wise I didn't hate either. Wife liked the ECM (sweeter, more chocolate milky) I liked the DRC (much less sweet, "darker" chocolate notes). They aren't as "thick" as the ghost or the Shakeology, which isn't a bad thing, just something to note. I think they'd be better in almond milk or something. Overall decent powder, I can see why people have good things to say about it. Think I'll try and combine the ECM and DRC next shaker bottle.

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Apr 5, 2026 9:23 PM
571 Comments
Joined Aug 2011
Sturmgeist781Apr 5, 2026 9:23 PM
571 Comments
Quote from G1GRANDEUR View quoted comment :
I have been using ON for a long time, how is the Kirkland brand? I was going to try it after my last bag.
When ON is on sale it's the same price as the Kirkland. The Kirkland chocolate is good. The macros seem on par with ON. Both are easily mixable and don't clump. I'd go either when it's cheap. As lot as it doesn't taste like MyProtein with the artificial sweeteners and aren't amino spiked you should be good.

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