Seeking Health Riboflavin (60 Capsules)
$35.80
B-vitamin supplement: Riboflavin (vitamin B2) as a mixture of riboflavin and Riboflavin 5′-Phosphate (R-5-P).
Seeking Health formulation providing 400 mg per capsule with the active R-5-P form included, no conversion required.
In stock
Ships same business day from Melbourne (orders before 2pm)
What is Seeking Health Riboflavin and who is it for?
Seeking Health Riboflavin provides 400 mg of vitamin B2 per capsule as a mixture of riboflavin and its active form, Riboflavin 5′-Phosphate (R-5-P). R-5-P is the form your body actually uses, so including it directly means less conversion work required. This is a vegan-friendly, single-nutrient formulation with no unnecessary fillers.
This product is particularly relevant for people who have identified genetic variations affecting riboflavin metabolism, those following a methylation-focused protocol, or anyone who wants a clean, high-dose B2 supplement without the extras. It’s suitable from age 4 upward and is listed as appropriate during pregnancy and breastfeeding, making it one of the more broadly applicable B2 options on the market.
Fairfield Nutrition Thoughts
Riboflavin tends to fly under the radar compared to folate and B12, but it’s a critical cofactor in the methylation cycle. Without adequate B2, the MTHFR enzyme can’t function properly, which means folate metabolism and homocysteine processing slow down regardless of how much methylfolate someone is taking. For people working on methylation protocols who aren’t seeing expected results, riboflavin status is often the missing piece.
Why This Formulation / How It Works
Most riboflavin supplements provide only the unconverted form, relying on your body to phosphorylate it into R-5-P before it can be used. This formula provides both riboflavin and R-5-P together, which matters for people whose conversion capacity is limited by genetic variation or nutrient status. At 400 mg per capsule, this is a higher-dose option than most mainstream B2 supplements, which typically sit at 50-100 mg. The capsule is vegan-friendly with no common allergens, artificial colours, or unnecessary binders.
Riboflavin functions as a coenzyme for the MTHFR enzyme, which converts dietary folate into 5-methyltetrahydrofolate (5-MTHF) – the active form used in methylation reactions throughout the body. Without adequate riboflavin, MTHFR activity is limited regardless of folate intake. Riboflavin is also involved in the methylation cycle more broadly, participating in the biochemical steps that process homocysteine.
Riboflavin serves as a cofactor for glutathione reductase (GSR), the enzyme responsible for converting oxidised glutathione back into its active, reduced form. This recycling process is central to maintaining the body’s antioxidant activity. Without sufficient riboflavin, oxidised glutathione accumulates and the pool of active glutathione available for cellular antioxidant activity is reduced.
Riboflavin is a required cofactor for monoamine oxidase A (MAOA), an enzyme involved in the breakdown of serotonin, dopamine, and norepinephrine. People with MAOA gene variations have altered activity of this enzyme, and riboflavin status can influence how the enzyme functions. This makes riboflavin relevant in protocols addressing neurotransmitter metabolism.
When to Consider This
This formulation provides targeted nutritional support for riboflavin-dependent metabolic pathways. It makes sense if you’re:
- Working with a practitioner on a methylation protocol and have identified MTHFR or MAOA genetic variations that affect riboflavin-dependent enzyme activity
- Following a methylation-focused supplement plan and want to ensure riboflavin status is addressed alongside folate and B12
- Pregnant or breastfeeding and your healthcare provider has identified increased riboflavin needs (this product is listed as suitable for both)
- An athlete or highly active person with increased demands on energy metabolism pathways where riboflavin functions as a cofactor
- Focusing on glutathione status as part of a broader antioxidant wellness strategy
Supplement strategy: Riboflavin is commonly introduced as part of a methylation support protocol, typically alongside methylfolate and B12. Many people add it after establishing foundational B-vitamin support and identifying specific genetic or metabolic factors that point to increased riboflavin needs. It’s often used continuously as part of an ongoing methylation protocol rather than short-term.
⚠️ Not suitable for: Those with known hypersensitivity to riboflavin. Note that riboflavin will turn urine bright yellow at these doses – this is expected and not a cause for concern.
How to Use
The manufacturer’s suggested use is 1 capsule with or without food, any time of day, as needed. Each capsule provides 400 mg of riboflavin as a mixture of riboflavin and R-5-P. Your healthcare professional may suggest a different dose depending on your individual needs.
Riboflavin is water-soluble, so timing relative to meals is flexible. The bright yellow urine that typically follows is a normal result of riboflavin metabolism at these doses and not a sign that anything is wrong.
Ingredients
Per 1 capsule:
Riboflavin (as a mixture of riboflavin and Riboflavin 5′-Phosphate / R-5-P) – 400 mg
Other ingredients: Hydroxypropyl methylcellulose (capsule), microcrystalline cellulose, ascorbyl palmitate.
Allergen information: Free from gluten, dairy, soy, eggs, fish, shellfish, peanuts, and tree nuts. Suitable for vegetarians and vegans.
Common Questions
Why does this include R-5-P when regular riboflavin is much cheaper?
R-5-P is the active form your body actually uses. Standard riboflavin needs to be converted to R-5-P before it can function as a coenzyme. Some people, particularly those with certain genetic variations, have reduced capacity for this conversion, so providing R-5-P directly ensures the active form is available. The combination of both forms in this product covers different absorption and conversion scenarios.
Why is the dose 400 mg when most B2 supplements are much lower?
Most mainstream multivitamins include riboflavin at the RDI level (around 1.1-1.3 mg), which is enough to prevent deficiency. This product is designed for people who have identified increased physiological needs, particularly those supporting MTHFR-dependent methylation pathways or glutathione recycling. Higher doses are commonly used in functional medicine protocols for these purposes.
My urine turned bright yellow after taking this. Is that normal?
Yes, completely normal. Riboflavin is water-soluble and the excess is excreted in urine, which turns it a vivid yellow-green colour. This is expected at 400 mg and is not a sign of toxicity or a problem with the supplement.
Can I take this alongside my other B vitamins or methylation supplements?
Yes. Riboflavin works alongside folate, B12, and other B vitamins in methylation and energy pathways. If you’re already taking a B-complex or methylation support formula, check whether it already contains riboflavin and at what dose, so you can determine whether additional B2 is appropriate for your situation. Your healthcare professional can help with this.
Warnings & Storage
Do not use if: You have a known hypersensitivity to riboflavin or any other ingredient in this product.
Cautions: Riboflavin will cause urine to appear bright yellow - this is expected and not a cause for concern. If you are taking medications that affect riboflavin absorption or metabolism, consult your healthcare professional before use.
Storage: Store in a cool, dry place away from direct sunlight. Keep out of reach of children.
Always consult your healthcare professional before use if you have any pre-existing conditions or are taking medications.
| Weight | 0.06 kg |
|---|---|
| GTIN | 8.10008E+11 |
