Choosing the right Vitamin B2 (riboflavin) supplement matters for energy, nervous system support and migraine prevention. This guide distills hands-on testing, label analysis, expert input and consumer feedback to recommend dependable B2 options across forms, doses and budgets.
How we tested and ranked
- Dose & formulation: Riboflavin dose per serving (100–400 mg), presence of co-nutrients (magnesium, CoQ10) and whether dose matches clinical migraine-prevention research (commonly 400 mg/day).
- Form factor & real‑world use: Capsules vs gummies — ease of use, taste, and suitability for vegetarians/vegans.
- Quality & transparency: GMP manufacturing, third‑party testing where claimed, allergen labeling, and clear ingredient lists.
- Value & availability: Price per serving, count per bottle, and overall affordability.
- Field testing: Tasting gummies for palatability and checking capsule size, plus review of user feedback on tolerability and efficacy.
We combined these factors to balance efficacy, safety and user experience when selecting picks for different needs.
Carlyle B2 400mg
High-dose, large-count riboflavin capsules at a very low price. Carlyle’s 400 mg formula offers a straightforward option for users seeking a potent B2 supplement in vegetarian-friendly capsules with clear allergen-free labeling.
Carlyle’s 400 mg riboflavin delivers a lot of active B2 per serving at one of the lowest prices in our roundup. The 180-count bottle makes it an economical choice for daily supplementation or long-term use. The formula is free from common allergens and marketed as non-GMO and gluten-free. Pros: exceptional cost per dose, high milligram strength, vegetarian-friendly capsules. Cons: no added cofactors like magnesium or CoQ10 and limited evidence of third‑party testing listed on the label—so buyers should verify manufacturing claims if lab verification is important to them.
Ourui One Premium B2
A premium, multi‑nutrient riboflavin gummy formula combining 400 mg B2 with CoQ10, magnesium and zinc. Designed for mitochondrial support, cognitive focus and comprehensive daily nutrition in a vegan, sugar‑free chewable.
Ourui One positions itself as a premium B2 option by pairing riboflavin 400 mg with CoQ10 (150 mg), magnesium (200 mg) and 10 mg zinc. That combination targets mitochondrial health and energy production more aggressively than straight riboflavin products. The advanced formula is vegan and sugar‑free, appealing to users who want ancillary nutrients that may complement B2 for migraine prevention or general energy. Pros: robust multi‑nutrient profile, vegan and sugar‑free, convenient gummy form. Cons: higher price point and more ingredients mean a greater chance of individual sensitivities; buyers seeking a single‑ingredient B2 may prefer a simpler capsule.
Nutricost B2 400mg
High-strength riboflavin in a large 120‑capsule bottle with a reputable manufacturing background. Nutricost provides a clinical-style 400 mg dose per capsule that suits users targeting migraine prevention or mitochondrial support.
Nutricost’s 400 mg riboflavin capsules strike a strong balance between potency, transparency and count-per-bottle. With 120 capsules at a mid‑range price, this option offers clear value for people who want the clinically relevant 400 mg dose without paying a premium. The product is marketed as non‑GMO, gluten-free and produced in a GMP‑compliant facility, which increases confidence in manufacturing standards. Pros: clinically useful 400 mg dose, good bottle size, transparent labeling. Cons: straight riboflavin without cofactors like magnesium; some users prefer chewables over capsules.
SmildeHeal B2 Gummies
Chewable, vegan B2 gummies delivering 400 mg riboflavin plus 200 mg magnesium glycinate per serving. Non‑GMO, sugar‑free and pleasant pineapple flavor — a well-rounded, easy-to-take daily supplement.
SmildeHeal’s Vitamin B2 gummies combine a clinically relevant 400 mg riboflavin dose with 200 mg magnesium glycinate per two-gummy serving — a useful pairing because magnesium can aid absorption and is often used alongside riboflavin for migraine management. The gummies are vegan, sugar‑free, gelatin‑free and free from artificial colors or flavors, which makes them suitable for many dietary preferences. Pros: excellent balance of dose and cofactors, pleasant flavor, gentle pectin base and stomach-friendly. Cons: gummies generally cost more per mg than bulk capsules; users wanting single‑ingredient riboflavin might prefer a capsule.
Quick comparison — key differences at a glance
- Form: Capsules (Carlyle, Nutricost) vs gummies (SmildeHeal, Ourui One).
- Typical clinical dose: 400 mg/day is commonly used for migraine prevention — available here in both gummy and capsule forms.
- Co‑nutrients: Ourui One and SmildeHeal include magnesium (and Ourui adds CoQ10 and zinc); Carlyle and Nutricost are single‑ingredient riboflavin options.
- Count & value: Carlyle (180 count) and Nutricost (120 count) offer the best cost-per-serving; gummies are more convenient but often cost more per mg.
Best overall: SmildeHeal B2 Gummies — balances clinical dose, cofactor (magnesium), palatability and price. Best for strict budgets: Carlyle. Best for capsule users seeking both dose and transparency: Nutricost. Best if you want an advanced multi‑nutrient formula: Ourui One.
Final recommendation
After reviewing labels, testing form factors and weighing cost versus clinical usefulness, the SmildeHeal B2 Gummies earn our Editor’s Choice for most users because they combine the clinically recommended 400 mg riboflavin dose with magnesium, a pleasant vegan gummy base, and clear allergen‑free labeling. If you’re price‑sensitive and prefer capsules, Carlyle or Nutricost give excellent milligram-per-dollar value—Nutricost is our pick when you want a good balance of quality and count. For people who want a targeted, multi‑nutrient mitochondrial formula, Ourui One is a premium option.
This review is based on hands‑on testing (taste and form), label and claims verification, and synthesis of expert and consumer feedback. Choose a form and dose that match your goals (migraine prevention, general energy, or dietary preference), and consult a healthcare provider before starting high‑dose riboflavin, especially if you take medications or have medical conditions.