Plant Protein
Our pick, delivery included · Cheapest per 25g, delivery known · Cheapest independently tested, delivery known
Optimum Nutrition Gold Standard 100% Plant Protein, Rich Chocolate Fudge (1.76 lb)$2.39per 25g, delivered$71.84 a month
Corrected Oct 2, 2026: until then the pick here was Thorne Plant Protein, Chocolate (676 g). Our record of Optimum Nutrition's own store left out the flat delivery rate its delivery page publishes below its free-delivery threshold, so delivery there counted as unknown and none of its packages could be the pick. With the rate recorded, its delivered cost is known.
Cheapest independently tested, before delivery
Bare Performance Nutrition Vegan Protein, Chocolate (891 g)$2.31per 25g, before delivery$69.43 a month
Not our pick: delivery cost is not published.
Delivery is extra and not published; free from $99.00.
Least to spend today
Optimum Nutrition Gold Standard 100% Plant Protein, Rich Chocolate Fudge (1.06 lb)$2.99per 25g, delivered$89.79 a month
More per 25g, but $11.50 less to spend today, delivered.
How these lines are chosen
Among 21 products and 21 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 “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.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.
From any plant source or a blend of them. Every one here is priced on the grams of protein its own label states per serving, not per scoop or per tub.
Prices checked daily. Every figure links to its source. Where the data comes from
Of the 21 products here: 9 named at the exact package by a certifier, 2 certified batch by batch, 1 at another size only, 9 in no database we searched.
21 of 21 products
13 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, but not at this size
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| Product | Delivery | |||||
|---|---|---|---|---|---|---|
BULK | $1.41 $42.18/mo + delivery | D · None located Could not locate independent data | $38.97 checked today | not free $20.03 short | 33 = 28 doses 28 days at 1/day | Buy BulkSupplements.com |
BULK | $1.62 $48.67/mo + delivery | D · None located Could not locate independent data | $44.97 checked today | not free $14.03 short | 33 = 28 doses 28 days at 1/day | Buy BulkSupplements.com |
ON Optimum Nutrition Gold Standard 100% Plant Protein, Rich Chocolate Fudge (1.76 lb) · our pick powder · 24g per serving · 1.04 per dose | $2.08 $62.48/mo | B · Informed Choice Independently tested | $39.99 checked today | $5.99 | 20 = 19 doses 19 days at 1/day | Buy Optimum Nutrition (direct) |
BPN | $2.31 $69.43/mo + delivery | A · NSF Certified for Sport Independently certified | $49.99 checked today | not free $49.01 short | 27 = 22 doses 22 days at 1/day | Buy Bare Performance Nutrition (direct) |
BPN | $2.31 $69.43/mo + delivery | A · NSF Certified for Sport Independently certified | $49.99 checked today | not free $49.01 short | 27 = 22 doses 22 days at 1/day | Buy Bare Performance Nutrition (direct) |
BPN Bare Performance Nutrition Vegan Protein, Oatmeal Cookie (772 g) powder · 20g per serving · 1.25 per dose | $2.31 $69.43/mo + delivery | A · NSF Certified for Sport Independently certified | $49.99 checked today | not free $49.01 short | 27 = 22 doses 22 days at 1/day | Buy Bare Performance Nutrition (direct) |
BPN Bare Performance Nutrition Vegan Protein, Peanut Butter (891 g) powder · 20g per serving · 1.25 per dose | $2.31 $69.43/mo + delivery | A · NSF Certified for Sport Independently certified | $49.99 checked today | not free $49.01 short | 27 = 22 doses 22 days at 1/day | Buy Bare Performance Nutrition (direct) |
BULK | $2.38 $71.37/mo + delivery | D · None located Could not locate independent data | $33.97 checked today | not free $25.03 short | 17 = 14 doses 14 days at 1/day | Buy BulkSupplements.com |
ON Optimum Nutrition Gold Standard 100% Plant Protein, Rich Chocolate Fudge (1.06 lb) powder · 24g per serving · 1.04 per dose | $2.47 $74.19/mo | B · Informed Choice Independently tested | $28.49 checked yesterday | $5.99 | 12 = 12 doses 12 days at 1/day | Buy Optimum Nutrition (direct) |
THOR | $2.78 $83.52/mo | A · NSF Certified for Sport Independently certified | $49.00 checked today | free | 20 = 18 doses 18 days at 1/day | Buy Thorne (direct) |
THOR | $2.78 $83.52/mo | A · NSF Certified for Sport Independently certified | $49.00 checked today | free | 20 = 18 doses 18 days at 1/day | Buy Thorne (direct) |
MOME | $2.84 $85.21/mo + delivery | A · NSF Certified for Sport Independently certified | $49.99 checked today | not free | 22 = 18 doses 18 days at 1/day | Buy Momentous (direct) |
MOME | $2.84 $85.21/mo + delivery | A · NSF Certified for Sport Independently certified | $49.99 checked today | not free | 22 = 18 doses 18 days at 1/day | Buy Momentous (direct) |
EN EVLution Nutrition Stacked Plant Protein, Natural Chocolate (300 g) powder · 20g per serving · 1.25 per dose | $3.12 $93.71/mo + delivery | D · None located Could not locate independent data | $24.99 checked today | not free $54.01 short | 10 = 8.0 doses 8 days at 1/day | Buy EVLution Nutrition (direct) |
BULK | $3.72 $111.47/mo + delivery | D · None located Could not locate independent data | $24.97 checked today | not free $34.03 short | 8 = 6.7 doses 7 days at 1/day | Buy BulkSupplements.com |
MOME Momentous 100% Plant Protein, Chocolate, 10-Travel Packs (10 packets) sachet · 20g per serving · 1.25 per dose | $3.75 $112.46/mo + delivery | A? · Listed, not at this package Independently certified package unconfirmed | $29.99 checked today | not free | 10 = 8.0 doses 8 days at 1/day | Buy Momentous (direct) |
BULK | $8.32 $249.64/mo + delivery | D · None located Could not locate independent data | $20.97 checked today | not free $38.03 short | 3 = 2.5 doses 3 days at 1/day | Buy BulkSupplements.com |
NUTR | Unknown | D · None located Could not locate independent data | Unknown | Unknown | 36 | |
NUTR | Unknown | D · None located Could not locate independent data | Unknown | Unknown | 71 | |
| Unknown | D · None located Could not locate independent data | Unknown | Unknown | 30 | ||
| Unknown | A · NSF Certified for Sport Independently certified | Unknown | Unknown | 22 |
Common questions
What is the cheapest plant protein powder?
Every plant protein we track, priced per 25 g of protein read from its own Supplement Facts panel rather than per scoop or per tub, cheapest first.
Which plant protein brands are third-party tested?
Every plant protein we track, grouped by whether a certifier names the exact tub sold, another size, or nothing we found. Absence is not a verdict.
Plant protein vs whey protein: which costs less per 25 g of protein?
What 25 g of protein costs from plant powders and from whey, package by package on the same basis. A price comparison only: protein quality is not compared.
What is the cheapest pea protein powder?
Pea protein priced per 25 g of protein from each label, not per scoop or per bag, cheapest first. Only panels that name pea and nothing else.
What is the cheapest NSF certified plant protein?
Every plant protein whose exact package NSF names in its Certified for Sport database, ranked by cost per 25 g of protein as its own panel prints it.
How many grams of protein are in a scoop of plant protein?
How many grams of protein one labeled serving holds, from the panel of every plant protein we price, and why equal serving counts are not equal purchases.
Do third-party tested supplements cost more?
The cheapest product we track in each category beside the cheapest one a certifier names at the exact package, where one exists, and the gap per dose.
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 plant protein NSF certified?
Thorne Plant Protein in chocolate and vanilla, checked flavor by flavor in NSF's Certified for Sport database, with the listing IDs.
Is BPN Vegan Protein NSF certified?
BPN Vegan Protein checked flavor by flavor in NSF's Certified for Sport database, with the listing IDs.
Is Momentous plant protein NSF certified?
Momentous 100% Plant Protein in each flavor and the travel packs, checked against NSF Certified for Sport flavor by flavor, with the listing IDs.
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 re-read every price we can read automatically each day and keep every reading. 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 price, and what that does to the count on the front of the bottle.
Is BUBS Naturals third party tested?
Every BUBS Naturals product we price, checked in NSF’s Certified for Sport database: 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 label does not state servings per container, the figure is derived from net weight and the product page says so.
- 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.