Whey Protein
Our pick, delivery included · Cheapest independently tested, delivery known
Optimum Nutrition Gold Standard 100% Whey, Double Rich Chocolate (10.18 lb)$1.61per 25g, delivered$48.24 a month
Cheapest per 25g, delivery known
MuscleTech Nitro Tech 100% Whey Gold, Double Rich Chocolate (5 lb)$1.33per 25g, delivered$39.85 a month
Not our pick: no independent verification we could locate.
Least to spend today
Optimum Nutrition Gold Standard 100% Whey, Double Rich Chocolate (0.68 lb)$3.38per 25g, delivered$101.50 a month
More per 25g, but $197.51 less to spend today, delivered.
How these lines are chosen
Among 44 products and 44 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
Why this pick, and what's cheaper
Not a score, no weightings to argue with. It is the cheapest per delivered dose among products clearing four factual bars (a certification we confirmed applies to this package, naming it where the certifier names packages; no recall, warning letter or failed test in the sources we checked; a price its retailer let us read within its cache limit; no more than a year's supply at the label's serving) and whose delivery cost we actually know. It is provisional: it is the best answer within the products, retailers and sources we have actually checked, and that universe is still narrow.
Scoops are not the same size from one brand to the next, so a price per scoop or per tub compares nothing. Every whey here is priced on the protein its own label states per serving.
Prices are checked daily where a store can be read automatically; Sports Research is read by hand, less often, and a price past its date says so. Every figure links to its source. Where the data comes from
Of the 44 products here: 5 named at the exact package by a certifier, 5 certified with no package named, 4 at another size only, 24 in no database we searched, 6 not settled.
44 of 44 products
15 rows marked + delivery exclude an unpublished delivery charge, so their real cost per dose is higher.
Tested? A Certified · B Tested · C Claimed · D None located · A? listed, not confirmed at this package · not settled: a certifier’s entry may cover it
MUSC
ANIM
ANIM
ON
BULK
NUTR
NUTR
NUTR
SR
BULK
NUTR
ON
BULK
BPN
EN
NUTR
NUTR
NUTR
NUTR
NUTR
CMS
ON
EN
BULK
THOR
THOR
EN
BPN
ON
ON
ON
NUTR
BULK
ON
EN
MOME
THOR
THOR
BULK
BULK
BULK
Out of stock
at the check on Oct 27, 2026
MI
Out of stock
at the check on Oct 27, 2026
MUSC
Out of stock
at the check on Oct 27, 2026
| Product | Delivery | |||||
|---|---|---|---|---|---|---|
MUSC MuscleTech Nitro Tech 100% Whey Gold, Double Rich Chocolate (5 lb) powder · 24g per serving · 1.04 per dose | $1.33 $39.85/mo | D · None located Could not locate independent data | $87.99 checked today | free | 69 = 66 doses 66 days at 1/day | Buy MuscleTech (direct) |
ANIM | $1.35 $40.59/mo + delivery | D · Not settled A certifier’s entry may cover this package | $64.95 checked today | not free | 60 = 48 doses 48 days at 1/day | Buy Animal (direct) |
ANIM | $1.38 $41.29/mo + delivery | D · Not settled A certifier’s entry may cover this package | $72.95 checked today | not free | 53 53 days at 1/day | Buy Animal (direct) |
ON Optimum Nutrition Gold Standard 100% Whey, Double Rich Chocolate (10.18 lb) · our pick powder · 24g per serving · 1.04 per dose | $1.61 $48.24/mo | B · Informed Choice Independently tested | $229.99 checked today | free | 149 = 143 doses 4.7 months at 1/day | Buy Optimum Nutrition (direct) |
BULK | $1.68 $50.37/mo + delivery | A · NSF Certified for Sport Independently certified | $50.97 checked today | not free $8.03 short | 33 = 30 doses 30 days at 1/day | Buy BulkSupplements.com |
NUTR | $1.75 $52.60/mo | D · None located Could not locate independent data | $120.97 checked today | free | 69 69 days at 1/day | Buy Nutricost (direct) |
NUTR | $1.77 $53.07/mo | D · None located Could not locate independent data | $137.97 checked today | free | 65 = 78 doses 78 days at 1/day | Buy Nutricost (direct) |
NUTR | $1.79 $53.83/mo | D · None located Could not locate independent data | $139.97 checked today | free | 65 = 78 doses 78 days at 1/day | Buy Nutricost (direct) |
SR Sports Research Whey Protein Isolate, Unflavored (907 g) powder · 25g per serving Other actives this price does not pay for: vitamin D3 20 mcg, medium chain triglycerides (MCTs) 3,000 mg and L-leucine 1,000 mg | $1.81 $54.17/mo | B · Informed Sport Independently tested | $46.95 stale, checked 10 days ago | $7.50 | 26 26 days at 1/day | Check price Sports Research (direct) |
BULK | $1.82 $54.52/mo | A · NSF Certified for Sport Independently certified | $59.97 checked today | free | 33 33 days at 1/day | Buy BulkSupplements.com |
NUTR | $1.84 $55.20/mo | D · None located Could not locate independent data | $126.97 checked today | free | 69 69 days at 1/day | Buy Nutricost (direct) |
ON Optimum Nutrition Gold Standard 100% Whey, Double Rich Chocolate (5.05 lb) powder · 24g per serving · 1.04 per dose | $1.86 $55.74/mo | B · Informed Choice Independently tested | $131.99 checked today | free | 74 = 71 doses 71 days at 1/day | Buy Optimum Nutrition (direct) |
BULK BulkSupplements.com Grass-Fed Whey Protein Concentrate (1 kg) powder · 23g per serving · 4.35 per dose | $1.91 $57.28/mo | D · None located Could not locate independent data | $57.97 checked today | free after +$1.03 | 33 = 30 doses 30 days at 1/day | Buy BulkSupplements.com |
BPN | $2.04 $61.10/mo + delivery | A? · Listed, not at this package Independently certified package unconfirmed | $54.99 checked today | not free $44.01 short | 27 27 days at 1/day | Buy Bare Performance Nutrition (direct) |
EN | $2.09 $62.72/mo | D · None located Could not locate independent data | $114.99 checked today | free | 55 55 days at 1/day | Buy EVLution Nutrition (direct) |
NUTR | $2.11 $63.43/mo | D · None located Could not locate independent data | $65.97 checked today | free | 26 = 31 doses 31 days at 1/day | Buy Nutricost (direct) |
NUTR | $2.11 $63.43/mo | D · None located Could not locate independent data | $65.97 checked today | free | 26 = 31 doses 31 days at 1/day | Buy Nutricost (direct) |
NUTR | $2.20 $65.96/mo + delivery | D · None located Could not locate independent data | $54.97 checked today | not free $4.03 short | 25 25 days at 1/day | Buy Nutricost (direct) |
NUTR | $2.25 $67.47/mo | D · None located Could not locate independent data | $62.97 checked today | free | 28 28 days at 1/day | Buy Nutricost (direct) |
NUTR | $2.26 $67.74/mo | D · None located Could not locate independent data | $60.97 checked today | free | 27 27 days at 1/day | Buy Nutricost (direct) |
CMS Core Med Science Whey Protein Isolate, Vanilla (30 servings) powder · 20g per serving · 1.25 per dose | $2.29 $68.74/mo + delivery | A · NSF Certified for Sport Independently certified | $54.99 checked today | not free $20.01 short | 30 = 24 doses 24 days at 1/day | Buy Core Med Science (direct) |
ON | $2.35 $70.56/mo | D · Not settled A certifier’s entry may cover this package | $103.49 checked today | free | 44 44 days at 1/day | Buy Optimum Nutrition (direct) |
EN | $2.36 $70.88/mo + delivery | D · None located Could not locate independent data | $25.99 checked today | not free $53.01 short | 11 11 days at 1/day | Buy EVLution Nutrition (direct) |
BULK BulkSupplements.com Goat Milk Whey Protein Concentrate Powder (1 kg) powder · 23g per serving · 4.35 per dose | $2.44 $73.09/mo | D · None located Could not locate independent data | $73.97 checked today | free | 33 = 30 doses 30 days at 1/day | Buy BulkSupplements.com |
THOR Thorne Whey Protein Isolate, Chocolate (30 servings) powder · 21g per serving · 1.19 per dose Second active this price does not pay for: a 30 mg proprietary blend of bromelain and papain | $2.58 $77.38/mo | A · NSF Certified for Sport Independently certified | $65.00 checked today | free | 30 = 25 doses 25 days at 1/day | Buy Thorne (direct) |
THOR Thorne Whey Protein Isolate, Vanilla (30 servings) powder · 21g per serving · 1.19 per dose Second active this price does not pay for: a 30 mg proprietary blend of bromelain and papain | $2.58 $77.38/mo | A? · Listed, not at this package Independently certified package unconfirmed | $65.00 checked today | free | 30 = 25 doses 25 days at 1/day | Buy Thorne (direct) |
EN | $2.60 $77.94/mo + delivery | D · None located Could not locate independent data | $64.95 checked today | not free $60.05 short | 25 25 days at 1/day | Buy Evogen Nutrition (direct) |
BPN | $2.60 $77.99/mo + delivery | A · NSF Certified for Sport Independently certified | $64.99 checked today | not free $34.01 short | 25 25 days at 1/day | Buy Bare Performance Nutrition (direct) |
ON Optimum Nutrition Gold Standard 100% Whey, Double Rich Chocolate (1.98 lb) powder · 24g per serving · 1.04 per dose | $2.68 $80.27/mo | B · Informed Choice Independently tested | $74.49 checked today | free after +$0.51 | 29 = 28 doses 28 days at 1/day | Buy Optimum Nutrition (direct) |
ON Optimum Nutrition Gold Standard 100% Whey, Double Rich Chocolate (0.68 lb) powder · 24g per serving · 1.04 per dose | $2.76 $82.78/mo | B · Informed Choice Independently tested | $26.49 checked today | $5.99 | 10 = 9.6 doses 10 days at 1/day | Buy Optimum Nutrition (direct) |
ON Optimum Nutrition Platinum Hydrowhey, Turbo Chocolate (3.61 lb) powder · 30g per serving · 0.83 per dose | $2.86 $85.93/mo | D · Not settled A certifier’s entry may cover this package | $137.49 checked today | free | 40 = 48 doses 48 days at 1/day | Buy Optimum Nutrition (direct) |
NUTR | $2.87 $85.96/mo + delivery | D · None located Could not locate independent data | $38.97 checked today | not free $20.03 short | 17 = 14 doses 14 days at 1/day | Buy Nutricost (direct) |
BULK BulkSupplements.com Goat Milk Whey Protein Concentrate Powder (500 g) powder · 23g per serving · 4.35 per dose | $2.94 $88.18/mo + delivery | D · None located Could not locate independent data | $45.97 checked today | not free $13.03 short | 17 = 16 doses 16 days at 1/day | Buy BulkSupplements.com |
ON Optimum Nutrition Platinum Hydrowhey, Turbo Chocolate (1.8 lb) powder · 30g per serving · 0.83 per dose | $3.10 $93.11/mo | D · Not settled A certifier’s entry may cover this package | $74.49 checked today | free after +$0.51 | 20 = 24 doses 24 days at 1/day | Buy Optimum Nutrition (direct) |
EN | $3.29 $98.66/mo + delivery | D · None located Could not locate independent data | $49.99 checked today | not free $29.01 short | 19 = 15 doses 15 days at 1/day | Buy EVLution Nutrition (direct) |
MOME Momentous Whey Protein Isolate, Unflavored powder · 20g per serving · 1.25 per dose Second active this price does not pay for: ProHydrolase 200 mg (a proprietary blend of proteases from Bacillus sp. and Ananas comosus) | $3.50 $104.98/mo + delivery | C · Claimed Claimed, not confirmed A certifier’s entry may cover this package | $69.99 checked today | not free | 25 = 20 doses 20 days at 1/day | Buy Momentous (direct) |
THOR Thorne Whey Protein Isolate, Chocolate, Travel Packs (14 packets) sachet · 21g per serving · 1.19 per dose Second active this price does not pay for: a 30 mg proprietary blend of bromelain and papain | $4.08 $122.45/mo | A? · Listed, not at this package Independently certified package unconfirmed | $48.00 checked today | free | 14 = 12 doses 12 days at 1/day | Buy Thorne (direct) |
THOR Thorne Whey Protein Isolate, Vanilla, Travel Packs (14 packets) sachet · 21g per serving · 1.19 per dose Second active this price does not pay for: a 30 mg proprietary blend of bromelain and papain | $4.08 $122.45/mo | A? · Listed, not at this package Independently certified package unconfirmed | $48.00 checked today | free | 14 = 12 doses 12 days at 1/day | Buy Thorne (direct) |
BULK BulkSupplements.com Goat Milk Whey Protein Concentrate Powder (250 g) powder · 23g per serving · 4.35 per dose | $4.34 $130.31/mo + delivery | D · None located Could not locate independent data | $31.97 checked today | not free $27.03 short | 8 = 7.4 doses 7 days at 1/day | Buy BulkSupplements.com |
BULK BulkSupplements.com Goat Milk Whey Protein Concentrate Powder (100 g) powder · 23g per serving · 4.35 per dose | $9.05 $271.41/mo + delivery | D · None located Could not locate independent data | $24.97 checked today | not free $34.03 short | 3 = 2.8 doses 3 days at 1/day | Buy BulkSupplements.com |
| Out of stock | D · None located Could not locate independent data | $62.97 last price, out of stock checked Oct 27, 2026 | not priced | 33 | ||
| Out of stock | D · None located Could not locate independent data | $44.99 last price, out of stock checked Oct 27, 2026 | not priced | 28 | ||
MUSC | Out of stock | D · None located Could not locate independent data | $49.99 last price, out of stock checked Oct 27, 2026 | not priced | 29 | |
| Out of stock | D · None located Could not locate independent data | $34.99 last price, out of stock checked Oct 27, 2026 | not priced | 12 |
No longer compared: MuscleTech Grass-Fed 100% Whey Protein, Deluxe Vanilla (1.8 lb). Its page says why and keeps the label we read.
Common questions
What is the cheapest whey protein per gram of protein?
Whey protein prices compared per 25 g of protein, cheapest first, from each Supplement Facts panel, not per scoop or per tub. Shelf price, before delivery.
Whey isolate vs concentrate: which is cheaper per gram of protein?
What each brand’s whey costs for the same 25 g of protein, isolate against concentrate, and where an isolate scoop carries more protein than the concentrate.
Which whey protein brands are third-party tested?
Every whey protein we track, grouped by whether a certifier lists the exact package sold, another size, or nothing we found. Absence is not a verdict.
How much does whey protein cost per serving?
What each whey we track costs per serving, next to the grams of protein in that serving. A serving is not the same amount of protein at every brand here.
Is BulkSupplements whey protein NSF certified?
Which BulkSupplements whey lines appear in NSF’s Certified for Sport database, and the packages each listing names, read from the certifier’s own listings.
Is BPN whey protein NSF certified?
BPN whey protein and whey isolate are named in NSF Certified for Sport, flavor by flavor. What each vanilla tub we price is covered by, with listing IDs.
Do third-party tested supplements cost more?
Per category, the cheapest product we track beside the cheapest a certifier names at the exact package, if any, within one format and, where it matters, one strength.
Is BulkSupplements third party tested?
Every BulkSupplements product we track, by whether a certifier names the exact package sold, only another size, or nothing we found. With listing IDs.
Do supplement travel packs cost more per dose?
Every travel pack or single-serve packet we price, next to the same brand’s smallest tub or bottle of the same product, per comparison dose.
Is Thorne whey protein third-party tested?
Thorne whey protein isolate in chocolate and vanilla, tubs and packets, checked package by package in NSF’s Certified for Sport database, with listing IDs.
What is the cheapest NSF certified whey protein?
Every whey we track whose exact tub NSF names in its Certified for Sport database, ranked by cost per 25 g of protein read from the brand’s own panel.
Is Thorne third party tested?
Every Thorne product we price, checked in NSF’s Certified for Sport database: which listing names the exact package sold, with the listing IDs.
Is Core Med Science third party tested?
Every Core Med Science product we price, checked in NSF’s Certified for Sport database: which listing names the exact package sold, and the IDs.
Is Optimum Nutrition third party tested?
Every Optimum Nutrition product we track, checked in the certifier databases: what each listing covers, package by package, with the listing IDs.
Is Momentous third party tested?
Every Momentous product we price, checked in NSF’s Certified for Sport database: where a listing names the exact package, and where it names another size.
Is BPN third party tested?
Every Bare Performance Nutrition product we price, checked in NSF’s Certified for Sport database: which package each listing names, and which it does not.
Which supplements are NSF Certified for Sport?
Every package we price that NSF names in its Certified for Sport database, by category, with the listing IDs and what each listing actually covers.
Do supplement prices actually change?
We keep every price reading we take: daily where a store can be read automatically, less often where it is read by hand. Which prices have moved since we started, which have not, and by how much.
How many capsules is one serving?
How many pills the label calls one serving, across every capsule, tablet and softgel we have a price for, and what that does to the count on the front of the bottle.
How many grams of protein are in a scoop of whey?
What one labeled scoop of whey holds, from the panel of every package we price, and why two tubs sold as the same servings are not the same purchase.
Is Evogen Nutrition third party tested?
Every Evogen Nutrition product we price, checked in NSF’s Certified for Sport database and others: which listing names the exact package sold, with the listing IDs.
Is Sports Research third party tested?
Every Sports Research product we track, checked in the certifier databases: which program lists each one, and which no database we searched lists.
About these numbers
What “per dose” means here: 25g protein
The ISSN position stand on protein and exercise gives a per-serving dose of 0.25 g/kg of body weight, or an absolute 20-40 g, to maximize muscle protein synthesis. 25 g is a round number inside that stated range, chosen so products with different scoop sizes can be priced against each other. It is a yardstick for comparing prices, not a recommended intake, and it cannot change which product is cheapest: it scales every row in the category by the same number.
Compared on grams of protein per serving, as printed in the Nutrition Facts or Supplement Facts panel. The scoop is not the basis: scoops differ from one brand to the next and carry different amounts of protein, so per-scoop and per-tub prices are not comparable. Whey and plant proteins share this basis and are compared in their own categories.
Source: Journal of the International Society of Sports Nutrition, International Society of Sports Nutrition Position Stand: protein and exercise · checked Sep 11, 2026 · verified by Dan
Where the data comes from
Every claim links to its source. Products, prices and certification listings are read from the retailers' own stores and the certifiers' own databases, and each figure links to the record it came from, so you can check any of them.
- Where a servings-per-container figure was not read from the package's own panel, the product page says how it was worked out.
- Amazon and Walmart are not included, so “cheapest” means cheapest among the retailers we track.
- Prices go stale. Each one shows when it was last checked, and says so when it is older than the retailer allows us to cache it.
- iHerb prices cannot be refreshed automatically. iHerb has not given us access to its price data, so those prices are marked stale until they are re-read. Each retailer offer carries its own check date.
Found something wrong? Tell us. Corrections are the point.
How we make money
No Buy button on this page earns us anything. The only links on the site that can are the Amazon links shown below the price comparison on some product pages, outside the comparison, and each says so beside it.
Commission will play no part in what we list, how it ranks, or which link we send you to. The Buy button points at the lowest price we have recorded even when that retailer pays us nothing.