Solgar Folate Metafolin 400µg vs Life Extension BioActive B-Complex

Q: Which is better, Solgar Folate Metafolin 400µg or Life Extension BioActive B-Complex?

Solgar Folate Metafolin 400µg scores 86/100 while Life Extension BioActive B-Complex scores 78/100 in our analysis. Solgar Folate Metafolin 400µg is the higher-rated product overall.

Q: Is Solgar Folate Metafolin 400µg worth the price compared to Life Extension BioActive B-Complex?

Solgar Folate Metafolin 400µg scores 68.0/100 for value, while Life Extension BioActive B-Complex scores 72.0/100. Life Extension BioActive B-Complex delivers better value overall.

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Solgar Folate Metafolin 400µg and Life Extension BioActive B-Complex.

Last verified: 28 Mar 2026 · Based on 108 reviews

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86.0

Score Summary

Solgar Folate Metafolin 400µg scores 86.0/100 vs Life Extension BioActive B-Complex at 78.0/100. Solgar Folate Metafolin 400µg wins on effectiveness, ingredient quality, side effects. Life Extension BioActive B-Complex is stronger on value for money.

Solgar Folate Metafolin 400µg vs Life Extension BioActive B-Complex: What Does the Data Say?

Folate (As Metafolin®) 400µg 50 Tablets from Solgar scores 86.0/100 overall and costs £9.20 while BioActive Complete B-Complex from Life Extension scores 78.0/100 and costs £8.08. The big difference sits in their formulas. Solgar delivers 400µg of Metafolin which is L-5-methyltetrahydrofolate the bioactive form the body uses straight away. Life Extension packs methylcobalamin as B12 5-MTHF as methylfolate and benfotiamine as B1 into two capsules per day. Solgar comes as tablets with one per day serving. Life Extension uses vegetarian capsules yet requires double the daily intake for its 30-day supply against Solgar's roughly seven-week pack.

Solgar wins on overall score at 86.0/100 effectiveness 88.0/100 and ingredient quality 93.0/100 so it suits people with MTHFR mutation carriers who cannot efficiently convert synthetic folic acid or those with diagnosed folate deficiency. Life Extension takes the value win at 72.0/100 against 68.0/100 and fits high-stress or high-workload individuals needing reliable daily energy and nervous system support plus those with doctor-diagnosed B vitamin deficiencies. Pick Solgar if you want targeted folate support that reviewers confirm raises blood levels through lab tests. Choose Life Extension when you need the full bioactive B range and notice energy lifts plus calmer nerves within one to two weeks.

Practical points matter too. Life Extension carries a strong smell on opening that bothers some users sensitive to odours. Solgar's smaller pack means more frequent repurchases. Both deliver measurable results for the right users yet your exact needs decide the better buy here.

How Do the Scores Compare?

Folate (As Metafolin®) 400µ...

BioActive Complete B-Comple...

	Folate (As Metafolin®) 400µ... Solgar	BioActive Complete B-Comple... Life Extension
Overall Score	86.0	78.0
Effectiveness	88.0/100 Best	80.0/100
Ingredient Quality	93.0/100 Best	86.0/100
Value for Money	68.0/100	72.0/100 Best
Side Effects	95.0/100 Best	84.0/100
Certifications	76.0/100 Best	56.0/100
Best Price	£8.05 Holland & Barrett → Cheapest	£8.24 iHerb →
Form	Tablets	None
Dose	None	None
Third-Party Tested	✗ No	✗ No
Reviews Analysed	58	50

Folate (As Metafolin®) 400µg 50 Tablets

Pros

✓Uses Metafolin® (L-5-methyltetrahydrofolate), the bioactive form directly usable by the body — superior absorption vs. synthetic folic acid
✓Highly effective for MTHFR mutation carriers who cannot convert regular folic acid
✓Multiple reviewers report confirmed improvements in blood folate levels via lab testing
✓Small, easy-to-swallow tablets with neutral taste and no reported digestive side effects

Cons

✗Small pack size — 50 tablets is only ~7 weeks' supply at the standard one-per-day dose
✗Not third-party tested per product specs, limiting independent purity verification
✗One Amazon reviewer reported receiving 46 tablets instead of 50 (possible quality control lapse)
✗Several iHerb reviews appear to describe the 1000mcg/120-tablet variant rather than this 400µg/50-tablet product, slightly muddying the review signal

Best For

Women planning pregnancy or currently pregnant MTHFR mutation carriers who cannot efficiently convert synthetic folic acid People with diagnosed folate deficiency Those seeking a clean, minimal-additive B-vitamin supplement Anyone wanting a well-trusted, established supplement brand

Holland & Barrett £8.05 Amazon UK -19% £11.91 £9.66

View full review →

BioActive Complete B-Complex, 60...

Pros

✓Methylcobalamin (B12), 5-MTHF (methylfolate), and benfotiamine (B1) — premium bioactive forms praised repeatedly by reviewers and confirmed in the formula
✓Multiple reviewers report noticeable energy increases and calmer nervous system within one to two weeks of starting
✓Several reviews from users with doctor-diagnosed B vitamin deficiencies report clear, measurable improvement
✓Transparent ingredient list with no unnecessary fillers — consistently praised across reviews

Cons

✗Distinctive strong supplement smell on opening — multiple reviewers flag it, particularly those sensitive to odours
✗60 capsules equals only a 30-day supply at the recommended two-per-day dose — shorter than many competitors
✗No independent third-party testing despite premium pricing; LE Certified is Life Extension's own in-house standard
✗Not vegan — vegetarian capsules only, which excludes a portion of the supplement market

Best For

People with MTHFR gene variants who cannot efficiently convert standard folic acid or cyanocobalamin Those with doctor-diagnosed B vitamin deficiencies seeking bioavailable forms High-stress or high-workload individuals needing reliable daily energy and nervous system support Athletes with elevated B vitamin requirements from training load

iHerb £8.24

View full review →

Score Breakdown: Solgar Folate Metafolin 400µg vs Life Extension BioActive B-Complex

Solgar Folate Metafolin 400µg Winner 86.0/100

Solgar's Folate as Metafolin® 400µg is a premium-grade folate supplement using L-methylfolate, the bioidentical, body-ready form of vitamin B9 that bypasses the need for hepatic conversion.

Effectiveness

Folate (As Metaf..

88.0/100

BioActive Comple..

80.0/100

Ingredient Quality

Folate (As Metaf..

93.0/100

BioActive Comple..

86.0/100

Value for Money

Folate (As Metaf..

68.0/100

BioActive Comple..

72.0/100

Side Effects

Folate (As Metaf..

95.0/100

BioActive Comple..

84.0/100

Certifications

Folate (As Metaf..

76.0/100

BioActive Comple..

56.0/100

What are the key differences?

Solgar Folate Metafolin 400µg is best for: Women planning pregnancy or currently pregnant, MTHFR mutation carriers who cannot efficiently convert synthetic folic acid

Life Extension BioActive B-Complex is best for: People with MTHFR gene variants who cannot efficiently convert standard folic acid or cyanocobalamin, Those with doctor-diagnosed B vitamin deficiencies seeking bioavailable forms

Frequently Asked Questions

Which is better, Solgar Folate Metafolin 400µg or Life Extension BioActive B-Complex? ▼

Solgar Folate Metafolin 400µg scores 86.0/100 overall while Life Extension BioActive B-Complex scores 78.0/100. Solgar Folate Metafolin 400µg comes out ahead, scoring higher on effectiveness (88.0 vs 80.0). Solgar Folate Metafolin 400µg is best suited for Women planning pregnancy or currently pregnant and MTHFR mutation carriers who cannot efficiently convert synthetic folic acid. Life Extension BioActive B-Complex is better for People with MTHFR gene variants who cannot efficiently convert standard folic acid or cyanocobalamin and Those with doctor-diagnosed B vitamin deficiencies seeking bioavailable forms.

Is Solgar Folate Metafolin 400µg worth the price compared to Life Extension BioActive B-Complex? ▼

Solgar Folate Metafolin 400µg costs £8.05 while Life Extension BioActive B-Complex is £8.24. For value, Solgar Folate Metafolin 400µg scores 68.0/100 vs Life Extension BioActive B-Complex's 72.0/100. Life Extension BioActive B-Complex delivers better value relative to its quality.

Which has fewer side effects? ▼

Solgar Folate Metafolin 400µg scores 95.0/100 for side effects (higher means fewer reported issues) while Life Extension BioActive B-Complex scores 84.0/100. Reviewers report fewer side effects with Solgar Folate Metafolin 400µg. For certification and testing, Solgar Folate Metafolin 400µg scores 76.0/100 vs Life Extension BioActive B-Complex's 56.0/100. Always consult a healthcare professional before starting any supplement.