Whey concentrate · per 25 g protein
Orgain vs Optimum Nutrition whey concentrate
Optimum Nutrition costs 36% less per 25 g protein than Orgain: $1.61 vs $2.50. At one serving a day that is $586.92 a year instead of $912.50, $325.58 less.
Popular brand

Orgain
Whey Protein Powder, Unflavored · 24 oz pouch
- Per serving
- $2.50 per 25 g protein
- A year, one serving a day
- $912.50
- Container
- $49.99 at Orgain
No. 1 cheapest on our list36% less

Optimum Nutrition
GOLD STANDARD 100% WHEY · Double Rich Chocolate · 149 Servings
- Per serving
- $1.61 per 25 g protein
- A year, one serving a day
- $586.92
- Container
- $229.99 at Optimum Nutrition
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Side by side
| Detail | Orgain | Optimum Nutrition |
|---|---|---|
| Price per 25 g protein | $2.50 | $1.61 |
| A year, one serving a day | $912.50 | $586.92 |
| Container price | $49.99 at Orgain | $229.99 at Optimum Nutrition |
| In the container | 500g protein | 3576g protein |
| Servings of 25 g protein | 20 | 143 |
| Serving on the label | 25 g protein | 24 g protein |
| Form | Powder | Powder |
| Third-party testing | Not listed | Not listed |
| Price checked | Every day | Every day |
Tested means the product is in the testing program's own database (NSF, USP, Informed Sport or Choice, IFOS). Not listed means we didn't find it there, not that it failed a test.
The verdict
Optimum Nutrition costs 36% less per 25 g protein than Orgain: $1.61 vs $2.50. At one serving a day that is $586.92 a year instead of $912.50, $325.58 less.
We didn't find either one in a third-party testing program's database (NSF, USP, Informed Sport or Choice, IFOS). That doesn't mean either one failed a test.
Optimum Nutrition costs more at checkout ($229.99 vs $49.99) because the container holds more: 143 servings of 25 g protein against 20.
The labels use different servings (Orgain: 25 g protein, Optimum Nutrition: 24 g protein), so both are priced on the same 25 g protein.
We compare price on the same dose. Taste, mixing, other ingredients and how a product suits you are yours to judge, so read both labels before you switch.
The cheapest whey concentrate today
Best value. Lowest price per serving on this list.
Optimum Nutrition GOLD STANDARD 100% WHEY · Double Rich Chocolate · 149 ServingsChecked less than an hour ago
$1.61 per 25 g protein36% less than Orgain per 25 g protein
BuySave me money at Optimum Nutrition (opens in a new tab)- Muscle Feast Whey Concentrate, Pasture Raised, Grass Fed, rBST/rBGH and soy free · 5lb · Unflavored
Checked less than an hour ago
$1.72 per 25 g protein31% less than Orgain per 25 g protein
BuySave me money at Muscle Feast (opens in a new tab) - ProMix Unflavored Whey Protein Powder · 1 Bag
Checked less than an hour ago
$1.73 per 25 g protein31% less than Orgain per 25 g protein
BuySave me money at ProMix (opens in a new tab)
Cheaper alternatives to Orgain whey concentrateSee the full whey concentrate list
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Questions
Is Optimum Nutrition cheaper than Orgain?
Optimum Nutrition costs 36% less per 25 g protein than Orgain: $1.61 vs $2.50. Both prices are checked every day, and this page changes when they do.
Are Orgain and Optimum Nutrition the same whey concentrate?
Both are on our whey concentrate list: Orgain as powder, Optimum Nutrition as powder. We compare the labeled amount of the active ingredient, priced per 25 g protein, not taste, other ingredients or quality. Prices shown per 25 g of protein, not scoop weight. Powder only. Whey concentrate, or whey where concentrate is part of the mix; 100% isolate has its own list.
Is Orgain or Optimum Nutrition third-party tested?
We didn't find either one in a third-party testing program's database (NSF, USP, Informed Sport or Choice, IFOS). That doesn't mean either one failed a test.
How is the price per 25 g protein worked out?
We divide the container price by how many 25 g protein servings the label's amount makes. Orgain: $49.99 ÷ 20 servings of 25 g protein. Optimum Nutrition: $229.99 ÷ 143 servings of 25 g protein. Store prices can change at checkout.
Whey concentrate buying guides
- Protein powder label: scoop weight vs grams of proteinA protein scoop is not all protein. How to find the protein share of a scoop, read the ingredients, spot amino spiking, and compare price per 25 g of protein.
- Cheapest whey protein: price per 25 g of proteinThe cheapest whey protein has the lowest price per gram of protein. How to work it out from the label, why scoop size misleads, and which tubs cost least now.
We show prices. We don't sell the products or tell you what to take. How we compare · Disclaimer


