
This high-quality dietary supplement from Swanson contains vitamin B2 as riboflavin. The daily dose of one capsule is 100 mg vitamin B2.
This high-quality dietary supplement from Swanson contains vitamin B2 as riboflavin. The daily dose of one capsule is 100 mg vitamin B2.
in 4 offers
The lowest price for Swanson Riboflavin Vitamin B-2 100 MG 100 Capsules right now is $9.26 at iHerb, compared across 4 retailers.
The all-time low was $5.99 on 21 Dec 2025 — today's price is 55% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 8 June 2026.
Swanson Riboflavin Vitamin B-2 100 MG 100 Capsules
This high-quality dietary supplement from Swanson contains vitamin B2 as riboflavin. The daily dose of one capsule is 100 mg vitamin B2.
This high-quality dietary supplement from Swanson contains vitamin B2 as riboflavin. The daily dose of one capsule is 100 mg vitamin B2.
Last updated at 08/06/2026 17:39:09
Swanson Premium Vitamin B-2 100mg 100 Capsules
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Swanson Vitamins, Riboflavin, 100 mg, 100 Capsules
Delivery $40
Premium riboflavin vitamin b-2 100 mg 100 capsules of 100mg - Swanson
Delivery $13.19
Swanson Vitamin B2 Supplement (Riboflavin) - Vitamin Supplement to Support Vision Health, Aid Thyroid Function, and Promote Energy Metabolism Support
Delivery between 9–20 June $28.35
originally posted on influenster.com
As recommended by a doctor years ago, Swanson is my favorite brand for vitamins and supplements! I've been taking this brand of Riboflavin for 6 years now (as instructed by my neurologist) to help in migraine prevention. I trust this brand more than most others. I personally buy these online through their website, and they're reasonably priced and I've never had an issue with shipping. Definitely recommend for those in need of Riboflavin.
originally posted on ebay.com
I've suffered for migraines for years. My neurologist recommended this as a supplement. It took a couple of weeks to build up in my system, but my migraines are greatly reduced now. I can only find this on eBay. Highly recommended to try if you suffer from migraines. Maybe it will help.
originally posted on Target
I love this vitamin and the amount of energy I now have. I didn't experience any stomach upset when I first started taking them. It's not too big and easy to swallow.
| Product Dimensions | |
| Length | 2 in |
| Height | 5 in |
| Width | 2 in |
Swanson Premium Vitamin B-2 100mg 100 Capsules
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Swanson Vitamins, Riboflavin, 100 mg, 100 Capsules
Delivery $40
Premium riboflavin vitamin b-2 100 mg 100 capsules of 100mg - Swanson
Delivery $13.19
Swanson Vitamin B2 Supplement (Riboflavin) - Vitamin Supplement to Support Vision Health, Aid Thyroid Function, and Promote Energy Metabolism Support
Delivery between 9–20 June $28.35
As recommended by a doctor years ago, Swanson is my favorite brand for vitamins and supplements! I've been taking this brand of Riboflavin for 6 years now (as instructed by my neurologist) to help in migraine prevention. I trust this brand more than most others. I personally buy these online through their website, and they're reasonably priced and I've never had an issue with shipping. Definitely recommend for those in need of Riboflavin.
I've suffered for migraines for years. My neurologist recommended this as a supplement. It took a couple of weeks to build up in my system, but my migraines are greatly reduced now. I can only find this on eBay. Highly recommended to try if you suffer from migraines. Maybe it will help.
I love this vitamin and the amount of energy I now have. I didn't experience any stomach upset when I first started taking them. It's not too big and easy to swallow.
This is a rather high dose of vitamin B2, at 100mg per capsule. Most B complex products only provides 50mg each. But the higher dose is necessary for mitochondrial support. If you suffer from migraine headaches, taking up to 400mg per day might help.
My very competent doctor recommended me taking B2. After searching on the Internet and presenting him with various brands, he liked this one the best. The price for this brand was actually less than the ones he did not like as well, which rarely happens.
I am playing around with R5P versus Riboflavin. I was told to take R5P but once it hits the stomach there are about 6 common minerals and substances that deactivated it rendering it useless. Genetically I don't' convert it hence the suggestion of R5P but if it's deactivated what good is it? I suspect this is true as I have reacted to Riboflavin with insomnia, which can occur if you have the B12 paradox issue (high in blood but not bioavailable and severely deficient with symptoms).This is a high dose so I have to be careful how much I open the capsule and take throughout the day. IT doesn't taste bad like R5P (or at all really), is cheaper so more wins all around. I will keep experimenting... Riboflavin is crucial for so many biochemical processes, seems like ... MoreI am playing around with R5P versus Riboflavin. I was told to take R5P but once it hits the stomach there are about 6 common minerals and substances that deactivated it rendering it useless. Genetically I don't' convert it hence the suggestion of R5P but if it's deactivated what good is it? I suspect this is true as I have reacted to Riboflavin with insomnia, which can occur if you have the B12 paradox issue (high in blood but not bioavailable and severely deficient with symptoms).This is a high dose so I have to be careful how much I open the capsule and take throughout the day. IT doesn't taste bad like R5P (or at all really), is cheaper so more wins all around. I will keep experimenting... Riboflavin is crucial for so many biochemical processes, seems like everyone needs to dose more throughout the day.
Riboflavin is wonderful in my system, as long as I take one capsule a day, I get no migraines. It’s worked for me for many years, and Swanson carries an inexpensive version. The only side effect is bright yellow urine, but that makes for a reminder if I forget.
Made me sick to my stomach all day and felt shaky. I guess it works so if thats what you're looking for this is it. But definitely will be throwing these in the garbage
I've always been Very Big on all the B-Vitamins, which are so important for one's general metabolism and at least 8 major areas. In addition to taking 2 or 3 of the ultra-important B-100 Complex daily, I supplement other individual B's for their specific contributions. B-2 is renowned for eyes, skin, and as a catalyst for B-1 and B-5. So, I take an additional 3 of these 100 mg. B-2 caps every morning and night. (I wish they put it out in a 250 mg. capsule.) Over the many decades, I have found that B-Vitamins have an immediate impact. Works for me.
You can actually tell your body is processing this one. Don't be alarmed if you start seeing neon green when you go to the bathroom. It means its doing its job.
| Product Dimensions | |
| Length | 2 in |
| Height | 5 in |
| Width | 2 in |