About Theobromine
Methylxanthine alkaloid found in cacao/chocolate, chemically related to caffeine but a milder stimulant with more pronounced vasodilatory effects. Marketed in energy/thermogenic blends (e.g., branded as Metabromine, a standardized cacao extract ~6% theobromine/1.5% caffeine); independent human RCT evidence for weight-loss or energy claims specific to isolated theobromine (apart from co-occurring caffeine) is weak.
What Theobromine supports
- Mild stimulant effect from cacao — evidence for energy/thermogenic claims is weak and often confounded with co-occurring caffeine
Clinical evidence
Limited clinical evidence. Few isolated human RCTs separate theobromine's effects from caffeine; claims largely unproven independently.
NIH Fact Sheet