Life Extension

TMG 500mg

Reviews reflect general trust in Life Extension as a brand; no TMG-specific feedback found—sentiment inferred from brand reputation mentions.

  • Adults seeking TMG to support healthy homocysteine metabolism
  • Those using betaine (TMG) to support methylation pathway function
  • Individuals supporting liver health with trimethylglycine supplementation
  • Brand Trust — 82% of verified reviews
★★★★☆ 4.5 (249) 4 sources
See breakdown →
Brand-verified ·Quality ingredients with verified sourcingClean FDA regulatory recordPositive consumer reviews and community feedbackAuthorized distribution channel verified
Referenced by  Chris Masterjohn, PhD  →
$13.99
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About Life Extension - TMG 500mg

Life Extension TMG 500mg delivers trimethylglycine (betaine) at a clinically studied dose to support methylation pathways, homocysteine metabolism, and cardiovascular health. TMG acts as a methyl donor, contributing to the conversion of homocysteine to methionine — a process relevant to heart, liver, and cognitive function. It may be a useful addition for adults focused on methylation support, especially those with dietary gaps in betaine-rich foods.

Why It's Worth Considering: Each capsule provides a straightforward 500mg dose of pure TMG without unnecessary fillers, consistent with Life Extension's focus on transparent, research-referenced formulations.

Why Gabriel Recommends This

Gabriel Score: 77 Moderate Evidence
Quality Verified
Life Extension 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
Life Extension 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 TMG to support healthy homocysteine metabolism
  • Those using betaine (TMG) to support methylation pathway function
  • Individuals supporting liver health with trimethylglycine supplementation
  • Athletes seeking TMG for muscle cell hydration and performance support

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.

4.5
249 reviews
5 star
75%
4 star
15%
3 star
5%
2 star
3%
1 star
2%
All (249)
0 Clinical Research
iHerb
0 iHerb
Amazon
205 Amazon
1 Practitioners
Reddit
42 Reddit
X
0 X
TikTok
1 TikTok
Instagram
0 Instagram
Substack
0 Substack
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Apotheca's Analysis — 50+ Signals Across 6 Dimensions
Reviews reflect general trust in Life Extension as a brand; no TMG-specific feedback found—sentiment inferred from brand reputation mentions.
Brand Trust
82%
Quality
75%
Value
68%
Efficacy
60%
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Compatibility Guide

Compatibility Data Loading

Apotheca is analyzing ingredient interactions, stacking compatibility, and timing recommendations for Life Extension - TMG 500mg. This data will be available soon.

Research Behind This

Life Extension 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. Life Extension products are analyzed against our comprehensive database of practitioner-grade supplements.
Practitioner Network Endorsement Data
Apotheca Practitioner Intelligence
Life Extension 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
Life Extension is part of Gabriel's curated marketplace of practitioner-grade supplement brands. Every product from Life Extension 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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Life Extension
Life Extension - TMG 500mg
Gabriel Score
Adequate quality with some areas for improvement.
Last updated: June 04, 2026
Score Breakdown
Manufacturing & GMP
43
Lab Verification
65
Review Consensus
94.4
Practitioner Confidence
61.0
Community & Social
68
Transparency
55
Consumer & Practitioner Intelligence
★★★★☆ 4.5 from 249 reviews across 4 sources
Practitioner Data 1Amazon 205Community 43+
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