Liquid Vitamin B-Complex Great Tasting Tangerine

Liquid Vitamin B-Complex Great Tasting Tangerine

Nature's Answer4.7 (6,805 ratings)
Format:Liquid Quantity: 16 Liquid(s) · 32 servings
Goals

Product analysis

67 out of 100

Liquid Vitamin B-Complex Great Tasting Tangerine supplies B vitamins that support normal energy use and blood formation when dietary intake falls short.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality65

Several identified B-vitamin forms offer favorable or acceptable quality. Folic acid is a less favorable folate form, and some other ingredients lack enough detail for a dependable comparison.

Ingredient Transparency89

Serving amounts and most ingredient forms are disclosed, making much of the formula easy to compare. A few unspecified forms leave some of the exact ingredient types unclear.

Value For Money34

Most of the available nutrient comparisons indicate a relatively expensive serving. Vitamin B6 compares more favorably, while value for several other ingredients remains uncertain.

Customer Satisfaction90

Customer feedback is very positive across a large number of ratings. The broad review base supports confidence in the satisfaction picture, without proving an energy benefit.

Product Focus61

The formula's main nutritional roles concern normal metabolism and energy-related processes. Filling a dietary shortfall may help related tiredness, while extra intake does not establish more energy when nutrition is adequate.

Format
Liquid
Container
16 Liquid(s)
Per serving
$0.82
Customer rating
4.7 · 6,805 ratings
Report analysis

Goals

Impact
High effect
A- Ingredient FitF PathwaysB EvidenceA+ Formulation Logic
Vitamin B5 · 70 mgRiboflavin · 50 mgThiamin · 50 mgVitamin B12 · 100 mcg

The B vitamins and folate support normal nutrient functions related to energy and blood-cell production. Filling a dietary shortfall can help address deficiency-related tiredness, but high amounts do not establish extra energy when intake is adequate. Vitamin C also contributes to addressing fatigue associated with deficiency. B12 did not contribute at the supplied amount.

How this product is rated for Energy

Ingredient fit87

Several nutrients contribute through their nutritional roles, with varying amounts and additional ingredients outside those roles.
Goal fit
The relevant nutrients share the formula with other actives, so the product's focus extends beyond energy.
Dose adequacy
Amounts vary across the contributing nutrients; excluded low amounts do not establish a lack of nutritional value.

Pathways0

No evaluated alertness, muscle-buffering, cellular-energy, stress-fatigue or blood-flow route received a contribution; nutritional deficiency correction is a separate role.
Depth
None of the evaluated routes received a contribution.
Breadth
No evaluated route meets the saved coverage threshold.

Evidence78

The relevant nutrients meet the saved evidence criteria for nutritional contributions. This does not demonstrate an energy boost in people with adequate intake.
Evidence strength
Riboflavin provides the strongest saved evidence contribution; nutritional function does not demonstrate extra energy above adequate intake.
Studied preparation
The qualifying ingredient preparations meet the saved criteria, without implying form superiority or proven finished-product efficacy.

Formulation logic100

The contributing ingredients meet the saved minimum amount and partner conditions. No configured conflict was identified.
Partner coverage
The contributing ingredients do not require an additional partner under the supplied findings.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
All ingredients counted in the saved result meet its minimum amount criterion; that criterion does not guarantee a noticeable benefit.
Study evidence
Thiamin Disputed 12 studies
Impact
High effect
B+ Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Biotin · 70 mcgNiacin · 70 mgVitamin B12 · 100 mcgRiboflavin · 50 mgThiamin · 50 mgVitamin B5 · 70 mgVitamin B6 · 50 mg

B vitamins help the body use energy through normal enzyme and coenzyme processes. This supports normal metabolism, but extra intake does not establish a higher rate of energy expenditure when intake is adequate. The supplied information does not demonstrate a direct thermogenic effect or added metabolic benefit from the particular vitamin forms.

How this product is rated for Metabolism Support

Ingredient fit81

The formula combines nutrients involved in normal metabolism; their counted amounts vary.
Goal fit
The formula includes several credited nutrients alongside ingredients serving other purposes.
Dose adequacy
Declared amounts receive partial allowance against the comparison amounts; this does not identify a proven effective dose.

Pathways0

The counted nutrient roles do not map to a direct thermogenic route.
Depth
No direct thermogenic pathway was represented by the counted ingredients.
Breadth
No route reaches the comparison's coverage threshold.

Evidence100

The retained findings must be interpreted alongside the distinction between ordinary metabolic roles and a demonstrated increase in energy expenditure.
Evidence strength
The strongest retained findings concern nutrient functions, which do not establish extra energy expenditure above adequate intake.
Studied preparation
The saved findings accept the counted preparations; this does not establish that this exact product or combination increased energy expenditure.

Formulation logic100

The retained ingredients meet the amount check and have no missing required partners. No evaluated ingredient conflict was triggered.
Partner coverage
No required partner is missing among the counted ingredients; this does not establish extra benefit from combining them.
Conflicts
None of the evaluated ingredient conflicts was triggered.
Effective doses
All ingredients retained for this check meet its amount threshold; the threshold is not a proven clinical minimum.
Study evidence
Biotin Supportive 5 studies
Niacin Supportive 17 studies
Thiamin Supportive 11 studies
Vitamin B6 Supportive 16 studies

Ingredients

IngredientAmount per servingScore
Calories
25 Calorie(s)
Total Carbohydrates
6 Gram(s)
Vitamin C (Ascorbic Acid)
120 mg
Vitamin E (D-Alpha-Tocopheryl Acetate)
7 mg
Thiamine (Thiamine Hydrochloride)
50 mg 76
Riboflavin (Riboflavin 5-Phosphate)
50 mg 82
Niacin (Niacinamide)
70 mg 65
Vitamin B6 (Pyridoxine Hydrochloride)
50 mg 71
Folate (Folic Acid)
200 mcg 10
Vitamin B12 (Cyanocobalamin)
100 mcg
Biotin
70 mcg
Pantothenic Acid (D-Calcium Pantothenate)
70 mg 70
Choline (Choline Bitartrate)
70 mg 58
Inositol
70 mg
Gluten Free Adults 18–50
Report overview
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyF Value
Each serving provides 50 mg of riboflavin from riboflavin 5-phosphate, a coenzyme form of vitamin B2. The whole-product serving costs about $0.82.
How this ingredient is rated

Active Ingredient Quality & Bioavailability100

Riboflavin 5-phosphate is a coenzyme form of vitamin B2.
Riboflavin Form Quality
Riboflavin 5-phosphate is a coenzyme form of vitamin B2.

Dose, Safety & Label Transparency100

The label states 50 mg of riboflavin per serving, and no flagged artificial additives were found in the available Other Ingredients panel.
Dosage for Energy & Metabolism
Each serving provides 50 mg of riboflavin.
R5P Elemental Yield Transparency
The label states the amount of riboflavin supplied by the phosphate form.
Additive Purity
No flagged artificial additives were found in the available Other Ingredients panel.

Value10

A whole-product serving costs about $0.82.
Price per Serving Value
The price is about $0.82 per serving of the entire product.
A- Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyF Value
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD- Value
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Physicochemical properties of and volatile compounds in riboflavin fortified cloudy apple juice; study of its effect on job fatigue among Egyptian construction workers.
    Fouad S; Ibrahim GE; Hussein AMS; Ibrahim FA; El Gendy A · Heliyon · 2021
    Non-randomized trialEnergy forRiboflavin
  2. Vitamin B status in patients with chronic fatigue syndrome.
    Heap LC; Peters TJ; Wessely S · Journal of the Royal Society of Medicine · 1999
    Case-control study30 participantsEnergy forRiboflavin
  3. B-vitamins, related vitamers, and metabolites in patients with quiescent inflammatory bowel disease and chronic fatigue treated with high dose oral thiamine.
    Bager P; Hvas CL; Hansen MM; Ueland P; Dahlerup JF · Molecular medicine (Cambridge, Mass.) · 2023
    Observational studyEnergy forRiboflavin
  4. Metabolic features of chronic fatigue syndrome.
    Naviaux RK; Naviaux JC; Li K; Bright AT; Alaynick WA; Wang L; Baxter A; Nathan N; Anderson W; Gordon E · Proceedings of the National Academy of Sciences of the United States of America · 2024
    Case-control study84 participantsEnergy forRiboflavin
  5. Effectiveness of Riboflavin in Inherited Metabolic Diseases: A Systematic Review
    Bregje Jaeger, Nina N Stolwijk, Femke Aaldering, Charlotte A Ruys, Marije Smits, Nicole I Wolf, Carla E M Hollak, Annet M Bosch · Journal of Inherited Metabolic Disease · 2026
    Systematic review381 studies pooledEnergy Metabolism Support forRiboflavin
  6. Influence of thiamin supplementation on the health and general well-being of an elderly Irish population with marginal thiamin deficiency.
    Smidt LJ; Cremin FM; Grivetti LE; Clifford AJ · Journal of gerontology · 1991
    Randomized trial80 participantsEnergy forThiamin
  7. Randomised clinical trial: high-dose oral thiamine versus placebo for chronic fatigue in patients with quiescent inflammatory bowel disease.
    Bager P; Hvas CL; Rud CL; Dahlerup JF · Alimentary pharmacology & therapeutics · 2021
    Randomized trial40 participantsEnergy forThiamin
  8. Dietary reference values for thiamin.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Turck D; Bresson JL; Burlingame B; Dean T; Fairweather-Tait S; Heinonen M; Hirsch-Ernst KI; Mangelsdorf I; McArdle HJ; Naska A; Nowicka G; Pentieva K; Sanz Y; Siani A; Sjödin A; Stern M; Tomé D; Van Loveren H; Vinceti M; Willatts P; Lamberg-Allardt C; Przyrembel H; Tetens I; Gudelj Rakic J; Ioannidou S; de Sesmaisons-Lecarré A; Forss AC; Neuhäuser-Berthold M · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusEnergy forThiamin
  9. Effects of thiamine supplementation on exercise-induced fatigue.
    Suzuki M; Itokawa Y · Metabolic brain disease · 1996
    Randomized trial16 participantsEnergy forThiamin
  10. Long-term maintenance treatment with 300 mg thiamine for fatigue in patients with inflammatory bowel disease: results from an open-label extension of the TARIF study.
    Bager P; Hvas CL; Rud CL; Dahlerup JF · Scandinavian journal of gastroenterology · 2022
    Randomized trialEnergy forThiamin
  11. A new perspective on vitamin B12 deficiency in rheumatology: a case-based review.
    Dułak NA; Rytlewska M; Jaskólska M; Chmielewski M · Rheumatology international · 2024
    Case series3 participantsEnergy forVitamin B12
  12. Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression.
    Markun S; Gravestock I; Jäger L; Rosemann T; Pichierri G; Burgstaller JM · Nutrients · 2021
    Meta-analysis6,276 participants16 studies pooledEnergy forVitamin B12
  13. Patients' experiences with methylcobalamin injections in amyotrophic lateral sclerosis.
    Zubair AS; Saab L; Scharer K; Khokhar B · Brain circulation · 2024
    Qualitative study5 participantsEnergy forVitamin B12
  14. Cobalamin deficiency: clinical picture and radiological findings.
    Briani C; Dalla Torre C; Citton V; Manara R; Pompanin S; Binotto G; Adami F · Nutrients · 2014
    Narrative reviewEnergy forVitamin B12
  15. Vitamin B12 Deficiency: Common Questions and Answers.
    Patel H; McGuirk R · American family physician · 2025
    Narrative reviewEnergy forVitamin B12
  16. Biotin and contribution to normal energy-yielding metabolism: evaluation of a health claim pursuant to Article 14 of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusMetabolism Support forBiotin
  17. Pregnancy and lactation alter biomarkers of biotin metabolism in women consuming a controlled diet.
    Perry CA; West AA; Gayle A; Lucas LK; Yan J; Jiang X; Malysheva O; Caudill MA · The Journal of nutrition · 2015
    Clinical trial75 participantsMetabolism Support forBiotin
  18. Survey of the effect of biotin on glycemic control and plasma lipid concentrations in type 1 diabetic patients in kermanshah in iran (2008-2009)
    Hemmati M, Babaei H, Abdolsalehei M · Oman Medical Journal · 2013
    Randomized trial70 participantsMetabolism Support forBiotin
  19. Chromium picolinate and biotin combination improves glucose metabolism in treated, uncontrolled overweight to obese patients with type 2 diabetes
    César A Albarracin, Bobby C Fuqua, James L Evans, Ira D Goldfine · Diabetes/Metabolism Research and Reviews · 2008
    Randomized trial348 participantsMetabolism Support forBiotin
  20. Biotin supplementation reduces plasma triacylglycerol and VLDL in type 2 diabetic patients and in nondiabetic subjects with hypertriglyceridemia
    Cristina Revilla-Monsalve, Iván Zendejas-Ruiz, Sergio Islas-Andrade, Armida Báez-Saldaña, Miguel Angel Palomino-Garibay, Pedro Martín Hernández-Quiróz, Cristina Fernandez-Mejia · Biomedicine & Pharmacotherapy · 2006
    Randomized trial33 participantsMetabolism Support forBiotin