🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 80% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 mL Serving Size
Vitamin Product Type
80% Evidence Coverage

Supplement Facts — Evidence Check

1.7 mg (121% DV)
✅ 1.3× RDA — within safe limits 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 1.7mg
20 mg NE (125% DV)
✅ 1.4× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 20mg UL 35mg
30 mg (500% DV)
📊 6.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 30mg
2 mg (143% DV)
✅ 1.5× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 2mg UL 100mg
1200 mcg (48000% DV)
📊 500.0× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 1.2mg

Other Ingredients

purified Water Sweetener Glycerine Pantothenic Acid Niacin Vitamin B6 Riboflavin 5’-Phosphate Sodium Citric Acid Vitamin B12 Potassium Sorbate Flavoring

Label Claims — Verification

Nutrient
All Other
All Other (99% of products) Structure/Function (85% of products) Nutrient (48% of products) No Claim (1% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: Shake well before use. Place one full dropper (1ml) daily, under the tongue and hold there for thirty seconds before swallowing. Do not exceed stated dose.

⚠️ Warnings & Precautions

Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

If you are pregnant, breastfeeding, taking any medications or under medical supervision, please consult a doctor or healthcare professional before use.

Discontinue use and consult a doctor if adverse reactions occur.

Keep out of reach of children.

Do not use if outer seal is broken or missing.

For Allergens - See ingredients in bold

🧪 Formulation Notes

No Artificial Colours or Flavours. No Porcine. No Yeast.

With a burst of B-12

Suitable for vegetarians and vegans

Food Supplement with Sweetener

This liquid provides an excellent source of B-Complex vitamins to help safeguard a sufficient daily intake.

Additional Information

Quality assured

Holland & Barrett products are subject to critically stringent quality assurance. Our commitment to quality is the highest in our industry to ensure the best quality nutritional supplements money can buy. You have our guarantee!

To reorder prod. #HB2871 www.hollandandbarrett.com

Prod. #HB2871 B51240 09D

Fast acting sublingual liquid

Supports normal energy yielding metabolism and contributes to the reduction of tiredness and fatigue Easy to take liquid Great tasting Calibrated dropper inside

Store in a cool, dry place.

Holland & Barrett’s B-Complex offers a distinct advantage over conventional nutritional supplements - it comes in an easy-to-use liquid form which is perfect for those who have difficulty swallowing tablets and capsules.

In addition to supporting energy yielding metabolism, individual B vitamins play a key role in a range of other functions including supporting the normal function of the nervous system, normal cardiac function, the maintenance of normal red blood cell formation, cell division and Iron metabolism, as well as contributing to the maintenance of normal skin, mucus membranes and vision.

B51240 Part No. 22-28717 09D

Product Details

UPC / SKU 5 017174 028711
DSLD Entry Date 2016-07-25
Product Type Vitamin
Form Liquid
DSLD ID 62747
Data Updated 2026-04-11

Research Evidence

22 Research Sources
49 Avg Quality Score
8 Rct
4 Meta Analysis
4 Clinical Trial
3 Systematic Review
1 Cochrane Review
1 Regulatory Source
B Effect of vitamin B2, vitamin C, vitamin D, vitamin E and folic acid in adults with essential hypertension: a systematic review and network meta-analysis
Systematic Review BMJ open 2024
B Effect of Vitamin B2 supplementation on migraine prophylaxis: a systematic review and meta-analysis
Meta Analysis Nutritional neuroscience 2022
B Supplementary vitamin E, selenium, cysteine and riboflavin for preventing kwashiorkor in preschool children in developing countries
Systematic Review The Cochrane database of systematic reviews 2010
B Riboflavin supplements for blood pressure lowering in adults.
Cochrane Review The Cochrane database of systematic reviews
B Associations of dietary vitamin B1, vitamin B2, vitamin B6, and vitamin B12 with the risk of depression: a systematic review and meta-analysis
Meta Analysis Nutrition reviews 2022
C Prophylaxis of migraine headaches with riboflavin: A systematic review
Systematic Review Journal of clinical pharmacy and therapeutics 2017
C Medium-dose riboflavin as a prophylactic agent in children with migraine: a preliminary placebo-controlled, randomised, double-blind, cross-over trial
Rct Cephalalgia : an international journal of headache 2010
C The efficacy of 2 different phakic intraocular lens implant in keratoconus as an isolated procedure or combined with collagen crosslinking and intra-stromal corneal ring segments: a systematic review and meta-analysis
Meta Analysis International ophthalmology 2023
C Epithelium-off photochemical corneal collagen cross-linkage using riboflavin and ultraviolet a for keratoconus and keratectasia: a systematic review and meta-analysis
Meta Analysis The ocular surface 2014
C Improvement of migraine symptoms with a proprietary supplement containing riboflavin, magnesium and Q10: a randomized, placebo-controlled, double-blind, multicenter trial
Rct The journal of headache and pain 2015
View all evidence for Riboflavin →

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