Thorne

Methyl-Guard, 180 Capsules

Size: 180 capsules

4.7 across 6 sources

May be a fit for

  • Adults seeking methylation support via methylfolate and methylcobalamin
  • Individuals with MTHFR variants requiring active B-vitamin cofactors
  • Those looking to maintain healthy homocysteine levels with methyl donors
$56.99

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CapsulesFormat
180 CapsulesPack size
The essentials

A closer look.

Methyl-Guard by Thorne is a B-vitamin complex providing active, methylated forms of folate (5-MTHF), B12 (methylcobalamin), B6 (pyridoxal-5-phosphate), and riboflavin-5-phosphate to support healthy methylation and homocysteine metabolism. It's formulated for individuals who may have difficulty converting standard B vitamins into their bioactive forms, including those with MTHFR gene variants.

Why It's Worth Considering: Thorne uses coenzyme and methylated forms throughout, bypassing conversion steps that some individuals cannot efficiently complete, a distinction that matters clinically.

The Apotheca perspective

50+ signals. A clearer standard.

Our curation and trust scoring bring together manufacturing, testing, research, practitioner insight and reviews from across the web.

96OUT OF 100
Manufacturing9898
Lab verification7878
Transparency6868

Our score is an editorial assessment, not a product certification or a guarantee of results.

Inside the formula

Product details

Who it may suit

May be a fit for

  • Adults seeking methylation support via methylfolate and methylcobalamin
  • Individuals with MTHFR variants requiring active B-vitamin cofactors
  • Those looking to maintain healthy homocysteine levels with methyl donors
  • Practitioner protocols requiring trimethylglycine and riboflavin-5-phosphate together

Considerations

  • 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)
From across the web

Real reviews. A wider perspective.

Customer reviews, social conversations and expert insights, with every source in view.

4.7/5Aggregate source rating
Marketplaces & brand websites
Amazon, iHerb and direct brand reviews
Social & community
Reddit, X, Instagram and TikTok
Video & creators
YouTube and creator perspectives

Coverage varies by product and brand.

1811 product and brand ratings and mentions across 6 sources.

Explore the source sentiment summary

Brand trust severely damaged by PE acquisition fears, counterfeit reports, and refusal to share COAs, despite some affiliate positivity.

This summary includes broader brand discussion. Individual experiences are not evidence of product effectiveness.

Good to know

A few useful answers.

Research & further reading

More category questions

How should I store this supplement?

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.

Can I take this with other supplements?

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.

How long should I take this supplement?

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.

When is the best time to take this?

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.

How do I know if this supplement is working?

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.

Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.

Thorne - Methyl-Guard, 180 Capsules Thorne

Apotheca quality score

96/100

The overall score combines several sources of information. The individual dimensions below show where those signals are stronger or more limited; they are not a simple average of the overall score.

Manufacturing9898
Lab verification7878
Review consensus100100
Practitioner signals63.063.0
Community signals6464
Transparency6868
See available brand signals
✓
Third-party lab tested (heavy metals, contaminants)Pass
✓
GMP-certified manufacturing by ThorneCertified
✓
Premium ingredient sourcing with bioavailable formsHigh
✓
Clinical evidence available for primary ingredientsAvailable
✓
Clean FDA regulatory recordNo issues
✓
Positive consumer reviews and community feedbackGood
✓
Authorized distribution channel verifiedDirect

Our score is an editorial assessment, not a product certification or a guarantee of results.

How our scoring works ↗