Brand investigation Published Apr 8, 2026

NutraBio

NutraBio: The Transparency Standard—with Prices That Mostly Add Up

Overall grade

D Mixed

You can look up a third-party lab report for the exact lot number on your NutraBio bottle—an unusually strong, consumer-facing transparency move in supplements. ¹².

Transparency

A 90/100

Excellent

Scandal-Free

F 20/100

Poor

Innovation

C 70/100

Adequate

Satisfaction

B 85/100

Strong

Value

C 70/100

Adequate

The investigation

We audited NutraBio's supplement line through public records and industry sources: batch COAs, third-party verifications, certifications and facility details, lawsuits and regulatory databases, pricing vs competitors, and customer-reported patterns across forums and review sites. Where claims were marketing-led, we traced them to primary evidence when possible.

Key findings

What our investigation surfaced

01

Batch-level transparency: NutraBio publishes third-party Certificates of Analysis (COAs) by lot number at CheckMySupps—uncommon in the category. Coverage began with proteins in 2017, with broader expansion; the site currently notes occasional update delays. ¹².
02

Label disclosure standard: The brand avoids proprietary blends and even piloted "True Facts" panels to show unrounded values online—meaning you see more than legally required. ³⁴.
03

Independent verification exists: NutraBio Whey Protein Isolate has been Stack3d Certified (amino-spike free/label match) and received TigerFitness "Tiger Tested & Approved." ⁵⁶.
04

Regulatory/litigation picture is mostly clean but not spotless: No FDA warning letter located for NutraBio in our ; however, a 2018 class action alleged exaggerated benefits for glutamine, and a 2025 TCPA suit alleges improper marketing texts. ⁸⁹.
05

Innovation is adoption-led, not patent-led: 2025's Growth Peptides pairs PeptiStrong (fava-derived peptides) and DL-185 dileucine at studied doses—forward-leaning but based on supplier science rather than NutraBio-run clinicals. ¹⁰¹¹¹²¹⁵.

Most surprising finding

NutraBio publicly launched a portal to let anyone pull lab results for specific lots—something many 'tested' brands still won't do. ¹.

Company profile

Who they actually are

Ownership

Privately held; founded and led by Mark Glazier since 1996. ²¹.

Founded

1996; brand history emphasizes in-house manufacturing after early contract-manufacturing issues. ²³.

Headquarters

564 Lincoln Boulevard, Middlesex, New Jersey, USA. ²².

Market position

Sports-nutrition centric with a strong transparency message (full label disclosure; no proprietary blends) and consumer-visible batch testing (CheckMySupps). ¹⁴.

Regulatory record

Company states it is FDA-registered and inspected and operates to 21 CFR Part 111 cGMP; also notes OU Kosher for select items. Independent FDA warning-letter searches did not surface letters naming NutraBio during this review. ⁹²⁰.

Certifications

Company-stated: OU Kosher on specific products (e.g., Whey Protein Isolate). ²⁰.

Active controversies

2018 glutamine class action filed; 2025 TCPA texting suit filed; no FDA warning letters located in our .

100% Whey Protein Isolate (WPI)

Protein · About $109.99 for 5 lb; ~$1.45/serving at listed retailers. [^16].

Strength

Transparent labeling; Stack3d-verified label match; OU Kosher; batch COAs available. ¹⁵²⁰.

Weakness

Uses non-nutritive sweeteners in many flavors; a minority of users prefer unflavored. Some flavor/texture complaints exist across forums, as with any protein. ¹⁵.

Evidence

Stack3d Certified lab panel; TigerFitness 'Tiger Tested' on protein accuracy; CheckMySupps COAs by lot. ⁵⁶¹.

Best-in-class transparency and third-party verification at a competitive price for true isolate buyers.

Creatine Monohydrate (powder)

Ergogenics · ~$35.99 for 500 g at major retailers—significantly more per kg than budget bulk creatine (~$28–$35/kg). [^18][^19].

Strength

Simple, single-ingredient with purity claims and batch testing; mixes well per user reports. ¹.

Weakness

Value: price per 5 g serving is higher than BulkSupplements or similar. ¹⁹.

Evidence

Category efficacy is well-established; brand's differentiation is transparency rather than novel science. ¹.

Quality is likely excellent; bargain hunters can save 40–60% elsewhere without sacrificing performance.

Tongkat Ali (LJ100) 200 mg

Hormonal wellness/performance · ~$44.99 for 60 servings. [^26].

Strength

Uses branded LJ100 extract with human data; clean, single-ingredient label. ²⁴²⁵.

Weakness

Effects vary; benefits depend on baseline status; not a substitute for medical care.

Evidence

Retailer listings confirm LJ100; numerous human studies exist on LJ100 generally (supplier-backed). ²⁴²⁵.

Thoughtful ingredient choice for a botanical where quality and standardization matter.

Growth Peptides (PeptiStrong + DL-185)

Muscle builder/recovery · $79.99 for 28 servings. [^10][^11].

Strength

Pairs two of the most researched next-gen peptide ingredients at or near studied doses; non-hormonal. ¹¹¹²¹⁵.

Weakness

Evidence is ingredient-level (supplier/third-party trials) rather than NutraBio-run clinicals on the finished product.

Evidence

Stack3d coverage confirms formula/doses; NutraIngredients summarizes recent PeptiStrong RCT; supplier cites dileucine human data. ¹¹¹²¹⁵.

Promising, but still 'emerging'—good for early adopters comfortable with cutting-edge ingredients.

Approach with caution

Products with issues

L-Glutamine (general marketing claims)

Amino acid · Varies

Issue

Past lawsuit alleged overstated recovery/muscle claims (industry-wide debate). Outcome not shown in our .

If buying, do so for specific use-cases (e.g., gut support) rather than broad muscle-building promises.

Red flags

Concerning patterns we found

Transparency portal update lag

CheckMySupps notes updates may not reflect the most recent lab tests due to staffing constraints.

FrequencyOngoing site notice

ResponseSite banner disclosure; COAs also available upon request via customer care. [^1].

What customers say

Patterns across the reviews

Transparency and taste frequently praised; pricing viewed as premium but fair for proteins.

Trustpilot average 4.9/5 across ~1,000+ reviews; multiple Reddit endorsements. ¹⁴¹⁵.

"Absolute leader... easiest third-party verification I've ever seen." [Reddit]

"They have full transparency... no proprietary blends." [Trustpilot]

High satisfaction for those who value testing and straightforward labels.

Sweetener preferences split users.

Recurring forum comments about sucralose/acesulfame; unflavored options mitigate. ¹⁵.

"Reputable... but I have reservations about acesulfame potassium, sucralose." [Reddit]

Flavor choice (or unflavored) matters if you avoid certain sweeteners.

Value analysis

What you actually pay for

Pricing strategy

Protein is competitively priced for true isolate; commodities like creatine run premium vs bulk.

Ingredient cost

High testing cadence and in-house manufacturing raise COGS but add consumer-visible value (COAs).

Markup

WPI 5 lb $109.99 (~~$1.45/serving) vs Transparent Labs WPI 2 lb $59.99 (~~$2.00/serving). Creatine: NutraBio ~$.36/5g vs BulkSupplements ~$.14/5g. ¹⁶¹⁷¹⁸¹⁹.

Excellent value for protein transparency; average-to-low value on plain commodities (creatine).

Alternatives

Other brands worth considering

Transparent Labs

Public COAs per product page; clean-label positioning.

Price

Often higher price per serving on protein.

Choose when

If you want batch COAs embedded on each PDP and strictly natural-sweetened options. ¹³¹⁷.

Nootropics Depot

Extensive in-house and third-party testing; lab capabilities; COAs on request.

Price

Varies by category; strong on niche actives.

Choose when

If lab testing depth and detailed COAs across many actives matter most. ²⁷²⁸²⁹.

Thorne (NSF Certified for Sport on many items)

NSF Certified for Sport coverage; athlete compliance.

Price

Generally premium.

Choose when

If you require NSF Certified for Sport rather than brand-published COAs. ³⁰³¹.

Verdict matrix

Who should buy, who should skip

Ideal for

Athletes and lifters who want to verify what's in the tub via batch COAs
Shoppers who refuse proprietary blends and want exact dosages
Consumers seeking OU-kosher options in dairy proteins

Avoid if

You want the absolute lowest price on commodity powders like creatine
You avoid artificial sweeteners entirely (choose unflavored instead)

Best products

100% Whey Protein Isolate
Tongkat Ali (LJ100)
Growth Peptides (for early adopters)

Skip these

Glutamine if purchasing primarily for 'muscle building'—evidence and litigation history caution marketing claims. ⁸.

The bottom line

Investigation reveals a brand that walks the talk on transparency—batch COAs, full label disclosure and independent verifications set NutraBio apart. Value is strong on its flagship protein and fair-to-premium on simple commodities. Regulatory exposure appears minimal; the notable watch-items are an older glutamine lawsuit and a 2025 TCPA text-marketing case. Innovation comes from rapid adoption of credible new ingredients rather than NutraBio-run clinicals. Bottom line: If you care about seeing the lab work behind your supplements, NutraBio earns your trust—and your protein dollars.

What to watch for

Track rollout/coverage on CheckMySupps as the portal catches up on posting COAs and watch how Growth Peptides performs as more independent data on PeptiStrong and DL-185 accumulates. Also monitor the outcome of the TCPA case for marketing-compliance signals.

Expert perspectives

Stack3d's program validated WPI label accuracy and no amino spiking. ⁵.

Frequently asked

Common questions

Does NutraBio publish batch test results (COAs) for my exact bottle?

Yes. Enter your lot number at CheckMySupps.com to view third-party testing for many products; if you don't see your lot, contact support and/or check back as the portal updates. ¹.

Is NutraBio NSF Certified for Sport?

We didn't find NSF Certified for Sport listings for NutraBio's finished products. NutraBio emphasizes cGMP operations, OU-Kosher on select items, and public COAs instead. If you need NSF, consider Thorne or other NSF-Sport brands. ²⁰³⁰.

Are NutraBio proteins amino-spiked?

Independent testing under Stack3d Certified reported NutraBio WPI is not amino-spiked and meets label claims. ⁵.

Is the peptide 'Growth Peptides' formula backed by clinicals?

The ingredients (PeptiStrong, DL-185) have emerging human data; NutraBio has not published a clinical trial on the finished product. ¹¹¹²¹⁵.

How do NutraBio prices compare?

Protein isolate is competitive versus transparent competitors; creatine and some commodities cost more than bulk sources. ¹⁶¹⁷¹⁸¹⁹.

How we investigated

Review of FDA databases and trade press, lawsuits/dockets, company manufacturing and testing disclosures, third-party testing programs, retailer pricing, and user-reported experiences across forums and review platforms.

Sources

1. CheckMySupps – batch COAs (2017)
2. NutraBio announces CheckMySupps (2017)
3. NutraBio True Facts (unrounded data) (2018)
4. Why proprietary blends persist (NutraBio position) (2018)
5. Stack3d Certified: NutraBio WPI (2015)
6. Tiger Fitness 'Tiger Tested' – NutraBio WPI (2016)
7. BBB profile (A+; zero complaints shown) (2025)
8. 2018 glutamine class action article (2018)
9. 2025 TCPA case docket (Johnston v. NutraBio Labs) (2025)
10. Growth Peptides product page (2025)
11. Stack3d: Growth Peptides coverage (2025)
12. NutraIngredients: PeptiStrong RCT summary (BMJ NP&H, 2025) (2025)
13. Transparent Labs: public COAs policy (2024)
14. Trustpilot: NutraBio reviews (4.9/5) (2025)
15. MuscleTech page citing dileucine (DL-185) human data (2024)
16. NutraBio WPI pricing (site) (2025)
17. Transparent Labs WPI pricing (2 lb) (2025)
18. NutraBio Creatine 500 g price (2025)
19. BulkSupplements Creatine 1 kg price (2025)
20. OU Kosher noted on WPI page (2025)
21. About NutraBio (Mark Glazier, founder) (2025)
22. Company address/contact (2025)
23. Healthcare Packaging profile (manufacturing detail) (2013)
24. Retailers showing NutraBio LJ100 listing (2025)
25. Additional retailer LJ100 detail (2025)
26. Target listing – Tongkat Ali pricing (2025)

Investigation date September 28, 2025 · 26 sources