This riboflavin tablet delivers 100mg of **Vitamin B2** for energy metabolism — many times the roughly 1.3mg you actually need each day, so it covers your everyday riboflavin needs with enormous headroom. Your body can only absorb so much at once and simply excretes the rest, which is why high doses turn your urine bright yellow — that's normal and harmless, not a sign anything's wrong.

The one targeted use with real clinical evidence is migraine prevention, but those trials use 400mg per day — four times what's in this tablet. So if you're taking riboflavin specifically to reduce migraine frequency, a single 100mg tablet falls short of the studied dose, and you'd need roughly four to get there.

For general energy and metabolism support, this more than has you covered. For migraine prophylaxis, treat it as a starting point rather than the clinical dose.