SP
StackPedia
All Supplements

Vitamin B2 (Riboflavin)

vitamins

★★★★★

Riboflavin is an essential B-vitamin that serves as a coenzyme in energy metabolism and antioxidant defence. It plays a critical role in converting carbohydrates, fats, and proteins into usable energy whilst supporting cellular health and nervous system function.

Benefits

✓Energy production and metabolism
✓Antioxidant protection
✓Eye health and vision
✓Nervous system support
✓Skin and hair health
✓Migraine prevention

Dosage

Typical Dose

1.1–1.6 mg daily

Upper Limit

200 mg daily

Timing

With meals for optimal absorption

Forms & Bioavailability

Riboflavin (free form)

Standard absorption, water-soluble

Riboflavin-5-phosphate (activated form)

Enhanced bioavailability and direct coenzyme activity

Side Effects

⚠Yellow discolouration of urine (harmless excess excretion)
⚠Rare allergic reactions at very high doses
⚠Photosensitivity in extremely high doses

Interactions

⚡Tricyclic antidepressants may impair riboflavin absorption
⚡Phenothiazines and methotrexate increase requirements
⚡Alcohol reduces absorption and increases requirements

Research Summary

Riboflavin supplementation has shown promise for migraine prevention, with several clinical trials demonstrating a 50% reduction in migraine frequency. Research supports its role in energy metabolism and cellular antioxidant defence, though deficiency is rare in developed nations with adequate dietary intake.

Compare Vitamin B2 (Riboflavin) with...

vs Vitamin D3vs Magnesiumvs Omega-3 (EPA/DHA)vs Creatine Monohydratevs Ashwagandha (KSM-66)vs Zincvs L-Theaninevs Vitamin B12All comparisons →

Where to Buy Vitamin B2 (Riboflavin)

We recommend buying from reputable retailers. Check reviews and third-party testing.

Amazon UK →

Affiliate links — we may earn a commission at no extra cost to you.

Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement, especially if you have existing health conditions or take medication.