Riboflavin is a B vitamin your body needs to convert food into energy and keep your cells functioning properly. At the standard dietary level it's just a nutrient — but at high therapeutic doses (around 400 mg/day), it acts more like a targeted treatment, especially for people prone to migraines. It's been studied in clinical trials for decades and is now endorsed by several major neurology guidelines as a first-line, well-tolerated option for migraine prevention.

Riboflavin plays a central role in how your mitochondria — the energy factories inside your cells — produce ATP, the fuel your body runs on. Research suggests that people who get frequent migraines may have less efficient mitochondrial energy production in brain cells, and high-dose riboflavin helps correct this deficiency. By boosting energy output in the brain, it appears to reduce the threshold at which migraines are triggered.

Standard riboflavin tablets and capsules at 400 mg are the most studied form for migraine prevention. Riboflavin-5-phosphate (the active coenzyme form) is also available and may be slightly better absorbed for people with certain enzyme variations, though most clinical trials used plain riboflavin. Powder forms can be mixed into drinks for those who prefer not to swallow large tablets.

• Migraine prevention
• Frequent headaches
• Chronic fatigue and low energy
• Migraines in children and teens
• Menstrual migraines
• Mitochondrial energy support
• Oxidative stress and inflammation
• Anemia support (with B12 and folate)

• Migraine episodes (frequency and duration)
• Riboflavin deficiency (ariboflavinosis)
• Preeclampsia risk reduction (in deficient pregnant women)

• Beef liver — One of the richest dietary sources of riboflavin — a single 3 oz serving provides well over 2 mg, far exceeding the RDA, though still a fraction of the 400 mg therapeutic dose.
• Dairy milk and yogurt — A reliable everyday source of riboflavin; a cup of milk provides about 0.3–0.4 mg. Riboflavin is well absorbed from dairy and contributes meaningfully to daily intake.
• Eggs — Each egg provides around 0.2 mg of riboflavin, mostly in the white. They're a consistent, accessible source and pair well with other B-vitamin-rich foods.
• Almonds — Among the best plant-based sources, with about 0.3 mg per ounce. A good choice for people avoiding animal products who want to maintain baseline riboflavin intake.
• Fortified cereals and grains — Many breakfast cereals and breads are fortified with riboflavin, making them a practical everyday contributor — especially for people who don't eat much meat or dairy.

• Bright yellow or orange urine (very common, harmless)
• Mild nausea if taken on an empty stomach (rare)
• Diarrhea at very high doses (rare)
• Increased light sensitivity (very rare, theoretical)

• Recommended daily: 400 mg per day for migraine prevention (standard clinical dose); general supplementation 10–50 mg/day. Children: 200 mg/day under guidance.
• Best time of day: Morning or split into two doses (morning and noon) to mirror the body's peak metabolic activity.
• With or without food: Take with food — riboflavin is better absorbed when consumed with a meal, and food also reduces any chance of nausea.
• Time to effect: Migraine prevention: 4–12 weeks for meaningful reduction in frequency. Energy effects: may be noticed within 2–4 weeks.
• How long to take it: For migraine prevention, use continuously for at least 3 months before assessing response. Long-term daily use is considered safe with no known need to cycle off.