Klaire Labs/SFI Health

B12 Liquid (1mg) (methylcobalamin) 120 Milliliters

Liquid

  • Energy · 82% of verified reviews
  • Mental Clarity · 74% of verified reviews
  • Absorption · 55% of verified reviews
  • Deficiency · 68% of verified reviews
★★★★☆ 4.6 (405) 6 sources
See breakdown →
Manufacturing55
Lab Verification78
Review Consensus97.6
Brand-verified ·Good manufacturing practices verifiedQuality ingredients with verified sourcingClean FDA regulatory recordPositive consumer reviews and community feedbackAuthorized distribution channel verified
Referenced by  A Midwestern Doctor, A Midwestern Doctor & Dr. Robert Malone + 12 more →
$32.99
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Ingredients & product label

The complete ingredient list and product label have not yet been published for this item. Please check the manufacturer’s label or contact us before ordering if you need to confirm an ingredient or allergen.

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About Klaire Labs/SFI Health - B12 Liquid (1mg) (methylcobalamin) 120 Milliliters

Klaire Labs' B12 Liquid delivers 1mg of methylcobalamin, the bioactive, coenzyme form of vitamin B12, in a sublingual liquid format designed for efficient absorption. Methylcobalamin supports neurological function, red blood cell formation, and healthy homocysteine metabolism, making it a practical option for those with absorption challenges, dietary restrictions, or increased B12 needs.

Why It's Worth Considering: The sublingual liquid format bypasses gastrointestinal absorption, which can be particularly relevant for individuals with compromised intrinsic factor or digestive concerns. Klaire Labs is a practitioner-trusted brand with a strong emphasis on purity and minimal excipients.

Why Gabriel Recommends This

Quality & Trust Score: 79 Moderate Evidence
Quality Verified
Klaire Labs/SFI Health products are evaluated across 50+ quality signals including manufacturing standards, lab verification, and ingredient sourcing transparency.
Label details
Ingredient amounts and serving sizes are shown in the product label section when supplier information is available.
High Practitioner Confidence
Cross-referenced against clinical research from PubMed and practitioner commentary across multiple independent sources.
Manufacturing Standards
Klaire Labs/SFI Health 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 Quality & Trust 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

Follow the directions on the label. Product-specific guidance hasn't been published for this item yet.
Ask Gabriel about timing & dosing →

Real Reviews. Real Sources.

4.6
405 reviews
5 star
75%
4 star
15%
3 star
5%
2 star
3%
1 star
2%
All (405)
10 Clinical Research
iHerb
0 iHerb
Amazon
351 Amazon
15 Practitioners
Reddit
2 Reddit
X
5 X
TikTok
0 TikTok
Instagram
2 Instagram
Substack
0 Substack
405 ratings aggregated across 6 sources · full-text reviews below
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Apotheca's Analysis · 50+ Signals Across 6 Dimensions
B12 broadly recognized for energy and cognitive benefits, but absorption issues and MTHFR variants temper enthusiasm with calls for proper testing.
Energy
82%
Mental Clarity
74%
Absorption
55%
Deficiency
68%
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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

Klaire Labs/SFI Health Product Quality Assessment
Quality & Trust Score Analysis
This product has been evaluated across 50+ quality signals including third-party testing, manufacturing standards, ingredient sourcing, and clinical evidence. Klaire Labs/SFI Health products are analyzed against our comprehensive database of practitioner-grade supplements.
Practitioner Network Endorsement Data
Apotheca Practitioner Intelligence
Klaire Labs/SFI Health 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
Klaire Labs/SFI Health is part of Gabriel's curated marketplace of practitioner-grade supplement brands. Every product from Klaire Labs/SFI Health 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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Klaire Labs/SFI Health
Klaire Labs/SFI Health - B12 Liquid (1mg) (methylcobalamin) 120 Milliliters
Quality & Trust Score
Adequate quality with some areas for improvement.
Last updated: September 08, 2026
Score Breakdown
Manufacturing & GMP
55
Lab Verification
78
Review Consensus
97.6
Practitioner Confidence
50.0
Community & Social
57
Transparency
60
Consumer & Practitioner Intelligence
★★★★☆ 4.6 from 405 reviews across 6 sources
Clinical Research 30Practitioner Data 15Amazon 351Community 9+
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 Quality & Trust Score works