ByDr. Brennan Commerford, D.C.·Last reviewed: April 2026
All Ingredients
Specialty1 form

Broccoli Seed Extract (13% Glucoraphanin)

Preferred Form
TrueBroc®
Form Score
95/100Top Tier
Evidence Level
Moderate Evidence

Which Broccoli Seed Extract (13% Glucoraphanin) form is best?

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Quick Answer

What is the best form of Broccoli Seed Extract (13% Glucoraphanin)?

TrueBroc® is our top-rated form of Broccoli Seed Extract (13% Glucoraphanin) — the form we recommend for its exceptional bioavailability, and we compared 1 forms in our formulary to rank it.

✓ Top Pick: TrueBroc®

1forms compared

All Forms of Broccoli Seed Extract (13% Glucoraphanin)

FormTierForm ScoreDose RangeUnit
TrueBroc®Preferred
95/100Top Tier

Absorption by Form

Top Tier
TrueBroc®
95/100

What is Broccoli Seed Extract (13% Glucoraphanin)?

Broccoli Seed Extract (13% Glucoraphanin) is a Specialty supplement available in 1 form.

Not all forms of Broccoli Seed Extract (13% Glucoraphanin) are equal. The form you choose determines how much Broccoli Seed Extract (13% Glucoraphanin) actually reaches your tissues, and the difference between the best and worst forms can be substantial. TrueBroc® is a standardized broccoli seed extract with 13% glucoraphanin, the stable precursor to sulforaphane, offering superior stability and consistent potency compared to direct sulforaphane preparations. Research supports glucoraphanin's conversion to sulforaphane via gut microbiota, activating the Nrf2 pathway to promote healthy cellular defense and detoxification enzyme activity.

Forms of Broccoli Seed Extract (13% Glucoraphanin) Compared

TrueBroc® SGS Broccoli Seed Extract (13% Glucoraphanin) Preferred (Preferred Form) has a bioavailability rating of good absorption.

What the Research Shows

TrueBroc is a patented broccoli seed extract standardized to 13% glucoraphanin, the precursor to sulforaphane. Sulforaphane is one of the most potent natural activators of the Nrf2 pathway, which governs cellular antioxidant and detoxification defenses. Research supports its role in liver health, inflammatory response, and cellular protection.

In a randomized double-blind crossover (n=16), glucoraphanin co-delivered with myrosinase doubled sulforaphane bioavailability (39.8% vs 18.6%) measured by urinary metabolites. PMID: 41692762
In a human crossover, sulforaphane plasma/urinary bioavailability was dramatically lower from a myrosinase-inactive broccoli supplement than from fresh sprouts. PMID: 21816223
Human subjects (200 umol SFN/day) showed ~3x higher sulforaphane plasma/urinary metabolite levels from fresh sprouts than from a broccoli sprout extract. PMID: 25522265

How to Choose the Right Form

TrueBroc® SGS Broccoli Seed Extract (13% Glucoraphanin) is classified as Preferred Form by FormulaForge — our top recommendation for Broccoli Seed Extract (13% Glucoraphanin). It carries a bioavailability rating of good absorption, meaning more of the active compound reaches your tissues per dose unit compared to lower-rated forms.

When choosing a Broccoli Seed Extract (13% Glucoraphanin) supplement, read the label for the specific form name — that is what determines how much you actually absorb. Preferred Forms have the strongest research-backed evidence for efficient absorption.

Other forms may be appropriate depending on individual goals, cost considerations, and your healthcare provider’s guidance. The best form for you depends on your specific health needs.

Dosing & Safety

Individual dose requirements vary based on health goals, body weight, and existing nutrient intake. Your healthcare provider can help you determine an appropriate amount of Broccoli Seed Extract (13% Glucoraphanin) for you.

Side Effects: Consult your healthcare provider regarding tolerability, particularly at higher doses.

These statements are based on structure/function research and have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

The Science

The following studies and findings inform FormulaForge classifications for Broccoli Seed Extract (13% Glucoraphanin):

In a randomized double-blind crossover (n=16), glucoraphanin co-delivered with myrosinase doubled sulforaphane bioavailability (39.8% vs 18.6%) measured by urinary metabolites. PMID: 41692762
In a human crossover, sulforaphane plasma/urinary bioavailability was dramatically lower from a myrosinase-inactive broccoli supplement than from fresh sprouts. PMID: 21816223
Human subjects (200 umol SFN/day) showed ~3x higher sulforaphane plasma/urinary metabolite levels from fresh sprouts than from a broccoli sprout extract. PMID: 25522265

Dosing Guidance

Individual dose requirements for Broccoli Seed Extract (13% Glucoraphanin) vary based on health goals, body weight, and existing dietary intake. A qualified healthcare provider can help you determine an appropriate amount for you.

Frequently Asked Questions

What is the best form of Broccoli Seed Extract (13% Glucoraphanin)?
Our top-ranked form of Broccoli Seed Extract (13% Glucoraphanin) is TrueBroc®. It has exceptional bioavailability, meaning your body absorbs and uses it efficiently. When choosing Broccoli Seed Extract (13% Glucoraphanin) supplements, prioritize this form over generic alternatives.
How much Broccoli Seed Extract (13% Glucoraphanin) should I take?
Dosing for Broccoli Seed Extract (13% Glucoraphanin) varies based on the specific form, your health goals, and individual factors. Consult a qualified healthcare provider for personalized guidance.
What does Broccoli Seed Extract (13% Glucoraphanin) support?
Broccoli Seed Extract (13% Glucoraphanin) is commonly used to support Specialty. Research suggests it plays a role in several physiological pathways. As with all supplements, these statements have not been evaluated by the Food and Drug Administration and Broccoli Seed Extract (13% Glucoraphanin) is not intended to diagnose, treat, cure, or prevent any disease.
Is Broccoli Seed Extract (13% Glucoraphanin) safe?
Broccoli Seed Extract (13% Glucoraphanin) is generally well-tolerated when taken at research-supported doses. As with any supplement, individual responses vary. Consult a qualified healthcare provider before use, especially if you are pregnant, nursing, have a medical condition, or take medications. These statements have not been evaluated by the Food and Drug Administration.

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References

  1. In a randomized double-blind crossover (n=16), glucoraphanin co-delivered with myrosinase doubled sulforaphane bioavailability (39.8% vs 18.6%) measured by urinary metabolites. PubMed
  2. In a human crossover, sulforaphane plasma/urinary bioavailability was dramatically lower from a myrosinase-inactive broccoli supplement than from fresh sprouts. PubMed
  3. Human subjects (200 umol SFN/day) showed ~3x higher sulforaphane plasma/urinary metabolite levels from fresh sprouts than from a broccoli sprout extract. PubMed

FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.