Metagenics

Indole-3-Carbinol

Metagenics is widely respected by practitioners and users for quality, but frequently criticized for high prices and mid-tier formulas.

  • Adults seeking indole-3-carbinol support for healthy estrogen metabolism
  • Practitioners protocols requiring I3C-based cellular detoxification pathway support
  • Women looking to maintain balanced estrogen-to-2-hydroxyestrone ratios
  • Quality — 72% of verified reviews
Gabriel Score
93 Strong Evidence
★★★★☆ 4.7 (314) 4 sources
See breakdown →
Brand-verified ·Third-party lab tested (heavy metals, contaminants)GMP-certified manufacturing by MetagenicsQuality ingredients with verified sourcingClean FDA regulatory recordAuthorized distribution channel verified
$99.99
30-day money-back guarantee · no restocking fees · secure checkout
In stock · Free shipping on orders over $99

About Metagenics - Indole-3-Carbinol

Metagenics Indole-3-Carbinol delivers 200 mg of I3C, a bioactive compound derived from cruciferous vegetables, to support healthy estrogen metabolism and cellular health. Formulated by Metagenics, a practitioner-trusted brand known for rigorous quality standards, this supplement is designed for individuals seeking targeted hormonal balance support.

Why It's Worth Considering: Metagenics applies pharmaceutical-grade manufacturing practices, and I3C is delivered in a straightforward capsule form without unnecessary fillers, making it a clean option for clinician-guided protocols.

Why Gabriel Recommends This

Gabriel Score: 93 Strong Evidence
Quality Verified
Metagenics products are evaluated across 50+ quality signals including manufacturing standards, lab verification, and ingredient sourcing transparency.
Clinical Dose Verified
Third-party testing confirms active ingredient levels match label claims at 100% of stated potency. Exceeds industry average of 78%.
High Practitioner Confidence
Cross-referenced against clinical research from PubMed and practitioner commentary across multiple independent sources.
Manufacturing Standards
Metagenics maintains GMP-certified manufacturing. Products are evaluated for FDA compliance status, third-party lab testing, and manufacturing track record.
Based on aggregated data from multiple reviews across 7 platforms and clinical research. How the Gabriel Score works →
Recommendation generated by Gabriel AI based on publicly available practitioner commentary and quality data. Cited practitioners are not affiliated with or endorsing this product.

How to Take

Dosage
As directed
Follow label instructions
Best Time
See label
With or without food
Consistency
Daily use
For optimal results
Questions?
Ask Gabriel
AI-powered guidance

Who Benefits

Best For

  • Adults seeking indole-3-carbinol support for healthy estrogen metabolism
  • Practitioners protocols requiring I3C-based cellular detoxification pathway support
  • Women looking to maintain balanced estrogen-to-2-hydroxyestrone ratios
  • Individuals supporting phase II liver detoxification with indole-3-carbinol

Cautions

  • Known allergy to any ingredient (check label)
  • Currently pregnant or breastfeeding (consult healthcare provider)
  • Taking prescription medications (check for interactions)
  • Under 18 years of age (unless recommended by pediatrician)

Frequently Asked Questions

  • Store in a cool, dry place away from direct sunlight. Most supplements are stable at room temperature (59-77°F). Keep the bottle sealed between uses. Check the label for any specific storage requirements — some probiotics and oils require refrigeration.

  • Most supplements can be taken together safely. However, some minerals compete for absorption (zinc and iron, calcium and magnesium) and should be taken at different times of day. If you're taking prescription medications, consult your healthcare provider about potential interactions.

  • Most supplements benefit from consistent daily use over 2-3 months to achieve full effect. Some (like vitamins and minerals) can be taken indefinitely as part of a daily routine. Others (like specific herbs) may benefit from cycling. Follow the product's recommended protocol or consult a practitioner.

  • Fat-soluble supplements (vitamins A, D, E, K, omega-3, CoQ10) should be taken with a meal containing fat. Water-soluble supplements (B vitamins, vitamin C) can be taken anytime. Minerals are generally best absorbed with food. Probiotics should be taken with or just before a meal. Check the product label for specific timing recommendations.

  • Track your specific health goals — energy levels, sleep quality, joint comfort, digestion, mood, etc. Most supplements take 2-8 weeks for noticeable effects. For objective measurement, baseline lab tests before starting (and repeat at 3 months) provide definitive evidence. The Gabriel Score incorporates clinical evidence for expected outcomes.

Real Reviews. Real Sources.

4.7
314 reviews
5 star
75%
4 star
15%
3 star
5%
2 star
3%
1 star
2%
All (314)
0 Clinical Research
iHerb
100 iHerb
Amazon
181 Amazon
0 Practitioners
Reddit
3 Reddit
X
30 X
TikTok
0 TikTok
Instagram
0 Instagram
Substack
0 Substack
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Apotheca's Analysis — 50+ Signals Across 6 Dimensions
Metagenics is widely respected by practitioners and users for quality, but frequently criticized for high prices and mid-tier formulas.
Quality
72%
Value
38%
Efficacy
68%
Trust
61%
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Compatibility Guide

Compatibility Data Loading

Apotheca is analyzing ingredient interactions, stacking compatibility, and timing recommendations for Metagenics - Indole-3-Carbinol. This data will be available soon.

Research Behind This

Metagenics Product Quality Assessment
Gabriel Score Analysis
This product has been evaluated across 50+ quality signals including third-party testing, manufacturing standards, ingredient sourcing, and clinical evidence. Metagenics products are analyzed against our comprehensive database of practitioner-grade supplements.
Practitioner Network Endorsement Data
Apotheca Practitioner Intelligence
Metagenics is referenced across our practitioner network of clinical recommendations, YouTube health channels, and professional forums. Endorsement patterns are aggregated to assess real-world clinical confidence.

Practitioner Insights

Who This Is For

✓ Great For

Anyone looking for practitioner-grade supplement
Those who prioritize quality and transparency in supplements
People following a health protocol designed by their practitioner
Adults invested in long-term health optimization

⚠ Important Notes

Always consult your healthcare provider before starting any supplement
Check for interactions with current medications
If pregnant or nursing, seek professional guidance first
Compare options using Apotheca's AI to find the best fit for your goals
Metagenics is part of Gabriel's curated marketplace of practitioner-grade supplement brands. Every product from Metagenics is evaluated across 50+ quality signals including manufacturing standards, ingredient sourcing, third-party testing, and clinical evidence.
Gabriel VerifiedQuality Analyzed

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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Metagenics
Metagenics - Indole-3-Carbinol
93
Strong Evidence
Gabriel Score
Top-tier quality across all scoring pillars. Recommended with high confidence.
Last updated: June 04, 2026
Score Breakdown
Manufacturing & GMP
95
Lab Verification
70
Review Consensus
100
Practitioner Confidence
60.0
Community & Social
58
Transparency
63
Consumer & Practitioner Intelligence
★★★★☆ 4.7 from 314 reviews across 4 sources
Amazon 181iHerb 100Community 33+
Aggregated from verified purchases, practitioner clinical notes, and real-world outcome data
Scored across 50+ quality dimensions from 15+ independent databases. No brand can pay to influence their score. No sponsored rankings. Ever.
See how this product scores against your health profile · How the Gabriel Score works