The best unsweetened protein powders, ranked

Of the 43 unsweetened protein powders we have checked against their labels, the highest-scoring are BulkSupplements Casein Protein Powder (100/100), AGN Roots Grass-Fed Whey (100/100) and BulkSupplements Whey Protein Isolate 90% Powder (100/100).

No sugar, sucralose, stevia, monk fruit or other sweeteners on the label: usually unflavored powders. We rank by the TBPP Quality Score: protein density, third-party testing, label transparency and sugar, scored against our published standard. Last checked 2026-10-14.

Our picks

Highest score

BulkSupplements

Casein Protein Powder

Casein · 30 g scoop

NSF Certified for SportNo sweeteners

Protein

25g

Sugar

Our score

100/100

$0.64 / servingChecked 2026-10-14

100/100 on our standard.

Best value

Naked Nutrition

Naked Casein Micellar Casein Protein Powder

Casein · 30 g scoop

NSF Contents CertifiedNo sweeteners

Protein

26g

Sugar

Our score

90/100

$0.39 / servingChecked 2026-10-13

$0.38 per 25 g of protein, the lowest in the top half.

Most protein per scoop

Opportuniteas

Grass Fed Whey Protein Isolate

Whey Isolate · 30 g scoop

No third-party testing foundNo sweeteners

Protein

28g

Sugar

Our score

75/100

$2.53 / servingChecked 2026-10-14

93% protein by weight.

Full ranking

Per serving, from the label. A dash means we couldn't verify it.

Best unsweetened protein powders, ranked by score
#	Powder	Score	Protein	Sugar	Per 25 g protein	Third-party tested
1	BulkSupplements Casein Protein Powder	100	25 g	0 g	$0.64	NSF Certified for Sport
2	AGN Roots Grass-Fed Whey	100	25 g	0 g	$0.66	Informed Sport, Informed Protein
3	BulkSupplements Whey Protein Isolate 90% Powder	100	25 g	0 g	$0.70	NSF Certified for Sport
4	Klean Athlete Klean Isolate	99	20 g	1 g	—	NSF Certified for Sport
5	NOW Foods NOW Sports Pea Protein (Pure Unflavored)	92	24 g	0 g	—	Informed Sport
6	Naked Nutrition Naked Casein Micellar Casein Protein Powder	90	26 g	0 g	$0.38	NSF Contents Certified
7	Naked Nutrition Naked Pea Protein Powder	90	27 g	2 g	$0.71	Informed Choice, NSF Contents Certified
8	Naked Nutrition Naked Whey Grass-Fed Whey Protein Powder	90	25 g	2 g	$1.84	Informed Choice, NSF Contents Certified
9	SAVAS Pro WPI Clear	79	19.4 g	—	—	Informed Choice, Informed Protein
10	It's Just! 100% Micellar Casein	75	28 g	1 g	$1.18	No
11	BulkSupplements Beef Protein Isolate Powder	75	24 g	0 g	$0.66	No
12	Paleo Pro Egg White Protein Powder	75	20 g	0 g	$4.17	No
13	Opportuniteas Grass Fed Whey Protein Isolate	75	28 g	0 g	$2.26	No
14	Opportuniteas Grass Fed Whey Protein Powder Concentrate	75	24 g	2 g	$2.15	No
15	Syntrax Nectar Medical	75	10 g	0 g	$2.06	No
16	AS-IT-IS Nutrition ONE Whey Protein Concentrate (Unflavoured)	75	28 g	1.5 g	—	No
17	Micro Ingredients Organic Pea Protein Powder	75	27 g	2 g	$0.76	No
18	Unjury Unflavored High Whey Protein Powder	75	21 g	0 g	$2.38	No
19	It's Just! Whey Protein Isolate (Grass-Fed, Unflavored)	75	30 g	1 g	$2.45	No
20	Anthony's Goods Pea Protein Powder	74	8 g	0 g	$0.81	No
21	Prozis 100% Real Whey Protein	67	23.1 g	1.59 g	—	No
22	Nutricost Organic Pea Protein Powder	67	20 g	0 g	$0.39	No
23	Further Food Organic Plant-Based Protein + Mushrooms & Seaweed	67	20 g	0 g	$2.31	No
24	Simply Tera's (formerly Tera's Whey) Organic Whey Protein	67	21 g	1 g	$3.97	No
25	Titan Nutrition Titan Whey	67	24 g	2 g	$1.93	No
26	Jarrow Formulas Whey Protein	67	18 g	1 g	$1.35	No
27	Kaizen Naturals Whey Protein	67	24 g	2 g	—	No
28	Bob's Red Mill Whey Protein Concentrate	67	14 g	1 g	—	No
29	Sunwarrior Classic Plus Protein Powder	65	20 g	0 g	$1.25	No
30	PureBulk Whey Protein Isolate 90% (USA)	64	28 g	—	—	No
31	Avvatar Whey Protein	61	28 g	—	—	No
32	Manitoba Harvest Max Protein Unsweetened (Hemp Protein Powder)	59	20 g	2 g	$1.87	No
33	Kaizen Naturals Plant Protein	59	20 g	0 g	—	No
34	MuscleBlaze Raw Whey Protein Concentrate (Unflavoured)	59	24 g	5.44 g	—	No
35	USN BlueLab 100% Whey Protein	58	23.6 g	—	—	Informed Choice
36	Naked Nutrition Naked Mass	58	50 g	21 g	$3.64	NSF Contents Certified
37	Beverly International Muscle Provider	57	21 g	1 g	$2.47	No
38	NOW Foods NOW Sports Whey Protein Isolate	57	24 g	—	—	Informed Sport
39	NOW Foods NOW Sports Micellar Casein	56	19 g	—	—	No
40	The Protein Works Whey Protein 80	52	20 g	—	—	No
41	Nutiva Organic Hemp Protein Powder (Peak Protein)	51	15 g	1 g	$2.33	No
42	Bob's Red Mill Almond Protein Powder	47	20 g	4 g	—	No
43	NOW Foods NOW Sports Egg White Protein	45	15 g	—	—	No