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Fully Active B Complex, 60 Veg Caps vs Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Fully Active B Complex, 60 Veg Caps and Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings.

Last verified: 07 Apr 2026 · Based on 64 reviews

79.0
Quick Answer

Fully Active B Complex, 60 Veg Caps scores 79.0/100 vs Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings at 79.0/100. Fully Active B Complex, 60 Veg Caps wins on value for money. Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings is stronger on ingredient quality and side effects.

Which is better: Fully Active B Complex, 60 Veg Caps or Igennus Super B-Complex - H...?

Doctor's Best wins at £16.07 versus £25.99, delivering near-identical effectiveness (82/100) and lower ingredient quality by just one point. The Igennus is worth the premium for those specifically wanting sustained-release delivery or a silicon dioxide-free formula.

— AIScored Editorial Team

How Do the Scores Compare?

Fully Active B Complex, 60 Veg Caps
Igennus Super B-Complex - H...
Fully Active B Complex, 60 Veg Caps
Fully Active B Complex, 60 Veg Caps
Doctor's Best
Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings
Igennus Super B-Complex - H...
Igennus Healthcare Nutrition
Overall Score 79.0 79.0
Effectiveness 82.0/100
Best
82.0/100
Best
Ingredient Quality 85.0/100 89.0/100
Best
Value for Money 83.0/100
Best
70.0/100
Side Effects 76.0/100 87.0/100
Best
Certifications 37.0/100 55.0/100
Best
Best Price £16.07 iHerb →
Cheapest
£25.99 Amazon UK →
Form None ‎Tablet
Dose None None
Third-Party Tested ✗ No ✗ No
Reviews Analysed 49 15

Fully Active B Complex, 60 Veg Caps

Pros

  • Active B vitamin forms throughout — Quatrefolic® folate, methylcobalamin B12, riboflavin 5'-phosphate — not cheaper synthetic alternatives
  • Reviewers consistently report reduced fatigue and better energy, often noticing effects within a few days
  • 1000mcg methylcobalamin per capsule is a solid B12 dose at a price most reviewers call good value for a 2-month supply
  • Niacin delivered as niacinamide — no flush reported, and capsule size described as easy to swallow with no aftertaste

Cons

  • Bright yellow urine and occasional smell from sweat noted by several users — harmless but worth knowing before starting
  • Some users report burping or mild digestive discomfort after taking, particularly on an empty stomach
  • No third-party testing — the active form claims rely on brand transparency, not independent verification
  • One reviewer questions whether all forms are truly active, suggesting some inactive B vitamin forms may be included alongside the premium ones

Best For

People with MTHFR gene variants who cannot convert folic acid and need pre-formed 5-MTHF Those with diagnosed or suspected B12 deficiency, including diabetics on metformin who deplete B12 Anyone seeking a budget-friendly active-form B complex without paying supplement premium brand prices Gym-goers wanting pre-workout energy support without stimulants or niacin flush
View full review →

Igennus Super B-Complex - High A...

Pros

  • Methylated B12 (methylcobalamin) and folate (methylfolate) for superior bioavailability and MTHFR compatibility
  • Clean-label formula with no silicon dioxide, magnesium stearate, or titanium dioxide
  • Sustained-release delivery provides steady energy without afternoon crashes
  • Includes Vitamin C alongside the full B-complex spectrum

Cons

  • Premium price point — not the cheapest B-complex on the market
  • Not independently third-party tested (only lab-verified internally)
  • One reviewer reported a noticeable formula change that reduced confidence in consistency
  • Twice-daily dosing requirement questions the claimed sustained-release mechanism

Best For

People with MTHFR gene variants who cannot efficiently use standard folic acid Those experiencing fatigue, brain fog, or low energy Women seeking hormone balance support (B6/B12 for cycle regulation) Vegans and those with multiple food allergies seeking a hypoallergenic formula Health-conscious buyers who scrutinise additive lists
View full review →

What does the data say about Fully Active B Complex... vs Igennus Super B-Comple...?

Both products score 79/100 overall and 82/100 for effectiveness, so the real differences come down to ingredient delivery and price. Doctor's Best Fully Active B Complex uses Quatrefolic folate, methylcobalamin at 1,000mcg per capsule, and riboflavin 5'-phosphate — all active forms your body can use directly. Igennus Super B-Complex also uses methylcobalamin and methylfolate, scores higher on ingredient quality (89/100 versus 85/100), and adds sustained-release tablet technology designed to spread absorption across the day rather than delivering everything at once. It also includes vitamin C and avoids fillers like silicon dioxide and magnesium stearate, which matters to some buyers.

Budget is the sharpest dividing line here. At £16.07 for 60 capsules, Doctor's Best scores 83/100 for value — Igennus comes in at £25.99 for 90 servings but scores only 70/100 on value. If you have an MTHFR variant or suspected B12 deficiency and want active-form B vitamins without spending much, Doctor's Best is the practical pick. Igennus suits those who want the cleaner label, the sustained-release format, or who find the twice-daily Doctor's Best capsules cause burping or digestive discomfort — a complaint that comes up regularly in reviews, especially when taken on an empty stomach.

One thing worth flagging about Doctor's Best: bright yellow urine and occasional body odour from sweat are reported by several users. Harmless, but unexpected if you haven't seen it before.

Fully Active B Complex, 60 Veg Caps Winner 79.0/100

Doctor's Best Fully Active B Complex earns its name by using genuine active forms throughout: Quatrefolic® 5-MTHF for folate, methylcobalamin at 1000mcg for B12, and riboflavin 5'-phosphate alongside standard riboflavin.

Effectiveness
Fully Active B C..
82.0/100
Igennus Super B-..
82.0/100
Ingredient Quality
Fully Active B C..
85.0/100
Igennus Super B-..
89.0/100
Value for Money
Fully Active B C..
83.0/100
Igennus Super B-..
70.0/100
Side Effects
Fully Active B C..
76.0/100
Igennus Super B-..
87.0/100
Certifications
Fully Active B C..
37.0/100
Igennus Super B-..
55.0/100

What are the key differences?

Fully Active B Complex,.. is best for: People with MTHFR gene variants who cannot convert folic acid and need pre-formed 5-MTHF, Those with diagnosed or suspected B12 deficiency, including diabetics on metformin who deplete B12
Igennus Super B-Complex.. is best for: People with MTHFR gene variants who cannot efficiently use standard folic acid, Those experiencing fatigue, brain fog, or low energy

Frequently Asked Questions

Which is better, Fully Active B Complex, 60 Veg Caps or Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings?
Fully Active B Complex, 60 Veg Caps scores 79.0/100 overall while Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings scores 79.0/100. Both score equally overall — the difference comes down to individual dimensions. Fully Active B Complex, 60 Veg Caps is best suited for People with MTHFR gene variants who cannot convert folic acid and need pre-formed 5-MTHF and Those with diagnosed or suspected B12 deficiency, including diabetics on metformin who deplete B12. Igennus Super B-Complex - High is better for People with MTHFR gene variants who cannot efficiently use standard folic acid and Those experiencing fatigue, brain fog, or low energy.
Is Fully Active B Complex, 60 Veg Caps worth the price compared to Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings?
Fully Active B Complex, 60 Veg Caps costs £16.07 while Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings is £25.99. For value, Fully Active B Complex, 60 Veg Caps scores 83.0/100 vs Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings's 70.0/100. Fully Active B Complex, 60 Veg Caps delivers better value relative to its quality.
Which has fewer side effects?
Fully Active B Complex, 60 Veg Caps scores 76.0/100 for side effects (higher means fewer reported issues) while Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings scores 87.0/100. Reviewers report fewer side effects with Igennus Super B-Complex - High Absorption Methylated B Vitamins, Clean Label, 180 Sustained Release Tablets - Complete Spectrum of B Vitamins with Folate, Boosted B12 & Vitamin C, 90 Servings. For certification and testing, Fully Active B Compl scores 37.0/100 vs Igennus Super B-Comp's 55.0/100. Always consult a healthcare professional before starting any supplement.

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