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Head-to-head evidence comparison — which supplement is right for you?
Riboflavin wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
8 of 10 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
25-50mg for general health; 400mg for migraine prevention
With food for better absorption, Morning with other B vitamins
Riboflavin or Riboflavin-5-Phosphate (R-5-P)
Once-weekly subcutaneous injection, started at 2.5 mg and escalated by 2.5 mg every 4 weeks to a maintenance dose of 5, 10, or 15 mg (per the prescribing physician and approved indication)
any
Once-weekly subcutaneous injection (Mounjaro / Zepbound)
3 months
2-4 weeks
Immediate
Weeks to months
Months (dose-escalated over ~20 weeks)
Weeks to months
Mostly during titration
Effect of Vitamin B2 supplementation on migraine prophylaxis: a systematic review and meta-analysis
Nutritional neuroscience (2022) · Meta analysis · n=673
Vitamin B2 supplementation significantly decreased migraine days (p = .005, I2 = 89%), duration (p = .003, I2 = 0), frequency (p = .001, I2 = 65%), and pain score (p = .015, I2 = 84%).
Effects of selected dietary supplements on migraine prophylaxis: A systematic review and dose-response meta-analysis of randomized controlled trials
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology (2025) · Meta analysis
In adults, compared with placebo, these supplements did not significantly affect other outcomes, and omega-3 supplementation did not yield a statistically significant reduction in any of these outcomes.
Riboflavin supplements for blood pressure lowering in adults
The Cochrane database of systematic reviews (2025) · Meta analysis · n=320
The evidence for the effect of oral riboflavin supplements on systolic and diastolic blood pressure is very uncertain.
Tirzepatide versus Semaglutide Once Weekly in Patients with Type 2 Diabetes.
N Engl J Med (2021) · Rct · n=1879
Open-label 40-week phase-3 head-to-head RCT (SURPASS-2) in 1879 patients with type 2 diabetes, tirzepatide 5/10/15 mg vs semaglutide 1 mg
Tirzepatide Once Weekly for the Treatment of Obesity.
N Engl J Med (2022) · Rct · n=2539
72-week phase-3 double-blind RCT (SURMOUNT-1) in 2539 adults with obesity (without diabetes), tirzepatide 5/10/15 mg vs placebo
Tirzepatide as Compared with Semaglutide for the Treatment of Obesity.
N Engl J Med (2025) · Rct · n=751
Phase-3b open-label head-to-head RCT (SURMOUNT-5) in 751 adults with obesity but without diabetes, max-tolerated tirzepatide vs max-tolerated semaglutide
Based on meta-analysis showing significant reduction in migraine frequency, days, duration, and pain score. High heterogeneity (I2=65-89%) in pooled analyses suggests variable individual responses. Most studies used 400mg daily dose.
AI-estimated from published studies. Interpret as directional guidance.
Riboflavin has a higher evidence score (6.5/10 vs 7.8/10) and wins in 2 of 3 categories.
No known interactions between Riboflavin and Tirzepatide have been documented in our database. However, always consult a healthcare provider before combining supplements.