Quick Verdict
Caffeine
Most consumed psychoactive. Adenosine antagonist. Well-established ergogenic aid across nearly all exercise modalities.
Evidence: strong (1300+ studies)
Boron
Trace mineral that significantly impacts testosterone, vitamin D metabolism, and bone health. One of the most underrated
Evidence: moderate (20+ studies)
Side-by-Side Comparison
| Caffeine | Boron | |
|---|---|---|
| Category | performance | minerals |
| Evidence Level | strong | moderate |
| Studies | 1300+ | 20+ |
| Dosage | 3-6 mg/kg | 3-10 mg |
Stack Compatibility
Caffeine: L-theanine (1:2 ratio caffeine:theanine), Creatine, Tyrosine
Boron: Vitamin D3, Magnesium, Zinc, Ashwagandha
Which Should You Choose?
Caffeine has stronger evidence (1300+ studies).