Allergy Research Group

QuatreActiv® Folate (4th Generation 5-MTHF)

90 Capsules

  • Adults with MTHFR variants seeking active 5-MTHF folate utilization
  • Practitioners protocols requiring 4th-generation methylfolate for sensitive patients
  • Individuals supporting methylation cycles with a reduced-form folate
  • MTHFR — 82% of verified reviews
Gabriel Score
85 Strong Evidence
★★★★☆ 4.6 (733) 4 sources
See breakdown →
Brand-verified ·Third-party lab testingGMP manufacturing standardsIngredient quality & sourcingClinical evidence backingFDA regulatory complianceDosing consistencyBrand reputation & trustCommunity & practitioner signal
Referenced by  A Midwestern Doctor, Dr. Joseph Mercola & Longevity Docs + 10 more →
$19.99 $0.22 per serving

90 capsules capsules · 90 servings · 1 month supply

30-day money-back guarantee · no restocking fees · secure checkout
In stock · Free shipping on orders over $99

About Allergy Research Group - QuatreActiv® Folate (4th Generation 5-MTHF)

QuatreActiv® Folate from Allergy Research Group delivers 4th generation (6S)-5-methyltetrahydrofolate — the biologically active form of folate — designed to support methylation, homocysteine metabolism, and neurological function. Unlike synthetic folic acid, 5-MTHF bypasses the conversion steps that many individuals with MTHFR variants cannot complete efficiently, making it particularly relevant for those seeking a readily usable folate source.

Why It's Worth Considering: The QuatreActiv® designation reflects an advanced-generation 5-MTHF with enhanced stability and stereochemical purity, formulated by a brand with longstanding recognition in the practitioner-grade supplement space.

Compare & Learn
Methylfolate vs Folic Acid

Why Gabriel Recommends This

Gabriel Score: 85 Strong Evidence
Quality Verified
Allergy Research Group 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
Allergy Research Group 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?
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AI-powered guidance

Who Benefits

Best For

  • Adults with MTHFR variants seeking active 5-MTHF folate utilization
  • Practitioners protocols requiring 4th-generation methylfolate for sensitive patients
  • Individuals supporting methylation cycles with a reduced-form folate
  • Those seeking folic acid alternatives for neurological and cardiovascular wellness support

Cautions

  • High-dose niacin with liver conditions (monitor liver enzymes)
  • B6 above 100mg/day long-term (risk of peripheral neuropathy)
  • Active cancer treatment (some B vitamins may interfere — consult oncologist)

What to Expect

1
Day 1–7
Energy Boost
Noticeable improvement in energy levels
2
Week 2–4
Mood & Stress
Reduced stress perception, better coping
3
Month 1–2
Neurological
Improved cognitive clarity and focus
4
Month 2–3
Homocysteine
Measurable homocysteine reduction (cardiovascular marker)
Based on B-complex supplementation research. Water-soluble — yellow urine color is normal and harmless.

Compare B-Vitamin Forms

Methylated vs Standard vs Synthetic
FeatureMethylated (active)StandardSynthetic (cheap)
B12 FormMethylcobalaminHydroxocobalaminCyanocobalamin
Folate Form5-MTHF (methylfolate)Folinic acidFolic acid (synthetic)
B6 FormP-5-P (pyridoxal-5-phosphate)PyridoxalPyridoxine HCl
Best ForMTHFR variants, optimal absorptionGeneral useBudget (requires conversion)
MTHFR SafeYes — bypasses mutationMostly yesNo — cannot be converted by 40% of population

Frequently Taken Together

Energy & Anemia
Iron
The trio addresses the most common nutritional anemia patterns.
Thorne - Advanced Iron Complex (formerly Ferrasorb)
$26.99
Methylation Stack
B6 (P-5-P)
B12 + folate + B6 form the homocysteine-clearing methylation triad.
EuroMedica - Magnesium + P-5-P
$18.99

Frequently Asked Questions

  • Methylated B vitamins are in their active, bioavailable form — your body can use them immediately without conversion. About 40% of the population has MTHFR gene variants that impair conversion of synthetic folic acid to active folate. Methylated forms (methylcobalamin, methylfolate, P-5-P) bypass this issue entirely.

  • This is completely normal and harmless. Riboflavin (B2) is a bright yellow fluorescent compound. When you take more than your body needs, the excess is excreted in urine, causing the distinctive color. It's actually a sign your body absorbed the B vitamins and is eliminating what it doesn't need.

  • B vitamins support energy production, so morning dosing is generally recommended. Some people find evening B-complex disrupts sleep due to increased energy. However, B6 and B12 are involved in melatonin production, so individual responses vary. If evening dosing doesn't affect your sleep, it's fine.

  • Signs of B12 deficiency: fatigue, brain fog, tingling/numbness in extremities, balance issues, mood changes, and pale skin. At-risk groups: vegetarians/vegans (B12 is only in animal foods), adults over 50 (reduced absorption), and those taking metformin or PPIs (which deplete B12). A serum B12 test plus methylmalonic acid (more sensitive) can confirm.

  • Yes — B vitamins are water-soluble, meaning excess is excreted daily. No accumulation risk at standard supplement doses. The exception is B6 (pyridoxine): chronic doses above 100mg/day can cause peripheral neuropathy (nerve damage). The P-5-P form is safer at higher doses than pyridoxine HCl.

Real Reviews. Real Sources.

4.6
733 reviews
5 star
75%
4 star
15%
3 star
5%
2 star
3%
1 star
2%
All (733)
10 Clinical Research
iHerb
100 iHerb
Amazon
590 Amazon
13 Practitioners
Reddit
0 Reddit
X
0 X
TikTok
0 TikTok
Instagram
0 Instagram
Substack
0 Substack
Sort by:
Apotheca's Analysis — 50+ Signals Across 6 Dimensions
Community broadly endorses methylfolate for MTHFR variants, praising bioavailability over folic acid, though price and mutation-specific caution are noted concerns.
MTHFR
82%
Absorption
76%
Energy
65%
Value
38%
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Compatibility Guide

Works Well With

Ask Gabriel for personalized stacking recommendations.

Take Separately From

No significant interactions identified. Always consult your healthcare provider.

Research Behind This

Allergy Research Group 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. Allergy Research Group products are analyzed against our comprehensive database of practitioner-grade supplements.
Practitioner Network Endorsement Data
Apotheca Practitioner Intelligence
Allergy Research Group 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
Allergy Research Group is part of Gabriel's curated marketplace of practitioner-grade supplement brands. Every product from Allergy Research Group 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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Allergy Research Group
Allergy Research Group - QuatreActiv® Folate (4th Generation 5-MTHF)
85
Strong Evidence
Gabriel Score
Strong quality signals. Meets recommended thresholds across most pillars.
Last updated: June 04, 2026
Score Breakdown
Manufacturing & GMP
73
Lab Verification
65
Review Consensus
100
Practitioner Confidence
52.0
Community & Social
63
Transparency
55
Consumer & Practitioner Intelligence
★★★★☆ 4.6 from 733 reviews across 4 sources
Clinical Research 30Practitioner Data 13Amazon 590iHerb 100
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