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Nutricost

Nutricost Vitamin B2 (Riboflavin) 400mg, 120 Capsules, Gluten Free

  • Based on 16,353 reviews
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Availability: In Stock.
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Arrives Wednesday, Aug 26
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Size: 120 Count (Pack of 1)


Features

  • 400mg of Premium Vitamin B2 (Riboflavin) Per Capsule
  • 120 Capsules of Vitamin B2 Per Bottle
  • 120 Servings Per Bottle, 1 Capsule is 1 Serving
  • GMO-Free, Gluten Free, 3rd Party Tested
  • Made In a NSF Certified, GMP Compliant, FDA Registered Facility

Description

Where are Nutricost products made? Nutricost products are made in the USA using globally sourced ingredients in a GMP-compliant facility. Is this product third-party tested? Yes. This product has been third-party tested to meet quality and safety standards.† How should I use this product? As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional. How should I store this product? Store in a cool, dry place. Vitamin B2 (Riboflavin) Vitamin B Complex Methylated Vitamin B Nutricost Vitamin B12 Vitamin B6 Niacinamide (Vitamin B3)

Package Dimensions ‏ : ‎ 4.48 x 2.36 x 2.28 inches; 3.8 ounces


Date First Available ‏ : ‎ July 14, 2016


Manufacturer ‏ : ‎ Nutricost


Best Sellers Rank: #1,671 in Health & Household (See Top 100 in Health & Household) #1 in Vitamin B2 (Riboflavin) Supplements


#1 in Vitamin B2 (Riboflavin) Supplements:


Customer Reviews: 4.7 4.7 out of 5 stars (16,353)


Brand Name: Nutricost


Item Form: Capsule


Primary Supplement Type: Vitamin B2


Diet Type: Gluten Free


Flavor: Unflavored


Product Benefits: Immune Support


Age Range Description: Adult


Specific Uses For Product: Digestive


Special Ingredients: Riboflavin


Number of Items: 1


Container Type: Bottle


Dosage Form: Capsule


Supplement Formulation: Individual Supplement


Global Trade Identification Number: 42


UPC: 810014675442


Manufacturer: Nutricost


Manufacturer Part Number: ZL08077


Unit Count: 120 Count


Item Weight: 3.8 ounces


Allergen Information: Gluten Free


Drug Side Effects: Vitamin B2 may cause urine to turn bright yellow. Rare side effects may include nausea, rash, swelling, dizziness, and itching.


Material Type Free: Gluten Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 26

This item is non-returnable:

Non-returnable due to Food safety reasons

View our full returns policy here.

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Top Amazon Reviews

    • Excellent B-2 Supplement
Size: 120 Count (Pack of 1)
Nutricost’s Vitamin B2 (Riboflavin) 400mg has been a standout addition to my wellness routine. The capsules are easy to take, gentle on the stomach, gluten‑free, GMO‑free, and reliably consistent. Adding Riboflavin has made a noticeable difference in my overall nerve health. The higher 400mg dose is convenient, and the 120‑capsule bottle lasts a long time, making it a great value. Nutricost delivers exactly what it promises. ... show more
Reviewed in the United States on July 23, 2026 by Deborah Baer
    • High-dose B2, great value, no fillers I don't want
Size: 120 Count (Pack of 1)
I've been taking Nutricost Vitamin B2 (Riboflavin) 400mg for a few weeks now and I'm really happy with this purchase. I was specifically looking for a higher-dose riboflavin supplement, and most options on the market only offer 25mg or 50mg — this one delivers a full 400mg per capsule, which is exactly what I needed without having to take a handful of pills. The capsules are easy to swallow, no strange smell or aftertaste, and I appreciate that it's gluten-free and non-GMO. Nutricost is also transparent about their ingredients — no unnecessary additives or fillers, just what's listed on the label. One thing worth noting: riboflavin naturally turns your urine bright yellow — that's completely normal and expected with B2 supplements, not a defect with the product, so don't be alarmed if you notice that. 120 capsules per bottle means this lasts a good while depending on your dosage, and the price per capsule is very competitive compared to other brands offering similar potency. Packaging arrived sealed and secure. Overall, a solid, no-nonsense supplement at a great price point. Will definitely repurchase! ... show more
Reviewed in the United States on August 11, 2026 by jennifer
    • Good value
Dr suggested for help with preventing migraine. So far so good. But ve warned - it will turn uring fluorescent yellow.
Reviewed in the United States on June 17, 2026 by Margot T. Cox
    • Great for my headaches
Size: 120 Count (Pack of 1)
I started taking this on advice from my NP because I was having headaches daily. It has really helped a ton! Only caution I would give is that your pee will be neon yellow!
Reviewed in the United States on October 12, 2025 by Michelle Wood
    • Riboflavin
Size: 120 Count (Pack of 1)
Review Image by Fatana
Review Image by Fatana
Review Image by Fatana
Great supplement! Easy to take, no side effects, and I’ve noticed better energy after use for migraine . Good quality and worth the price. Would buy again.
Reviewed in the United States on April 16, 2026 by Fatana
    • Timely delivery
Size: 120 Count (Pack of 1)
Great product
Reviewed in the United States on July 16, 2026 by Lock
    • a good thing!
Size: 120 Count (Pack of 1)
i use it every day, it makes me feel good like i was missing something that needed to inside me. great value for the money. Easy to absorb give me energy and my hair looks great. it lasted effect is great.
Reviewed in the United States on June 27, 2026 by Amirian diazmazon Customer
    • Life changing for headaches
Size: 120 Count (Pack of 1)
My doctor told me to get this for my migraines and they have changed my life
Reviewed in the United States on July 30, 2026 by Jason strycharz

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